A Deep Dive into the Royal Air Force Museum, Hendon

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nuuumannn

Major
10,149
9,442
Oct 12, 2011
Nelson
Hello everyone, my next deep dive is another world class aviation museum, the RAF Museum at Hendon, now "London", apparently so as to not confuse punters as to its location. I have decided to do this museum the justice it deserves since it gets a lot of flack online, particularly because of recent changes to the museum's layout and display spaces, which we will be examining and discussing here, so get ready for an informative ride that not everyone will agree with, I'm sure, but I can guarantee it will inform and possibly entertain. I should point out that I have connections to the RAF Museum (from here on in RAFM for brevity) and I have very fond memories of the place, which is a part of the reason I'm doing this. It is a great museum full of professionals who know what they are doing, even if not everyone agrees with the decisions they make.

Anyway, the RAFM holds the largest collection of vintage and historic aircraft in the UK, with aeroplanes at locations around the country and within its own facilities, but this deep dive will examine Hendon only, the home of the RAFM, although reference will be made to Cosford and the RAFM store at Stafford, which I never got to while I was at Hendon.

So, join me, if you dare, on a Deep Dive into the RAF Museum, Hendon.

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RAFM 239

The RAFM's Avro Lancaster I R5868 is still the centrepiece of the museum and we'll look at its remarkable history later. For now a caveat; these images were taken in 2018, so things might have changed by now. We begin with a look back at the origins of the RAFM, first mooted in World War Two, which seems like a prescient time to have thought about a military history museum, although sadly, those with history in mind did not act swiftly enough to prevent the postwar cull that saw many significant RAF types disappear into extinction, such as the Short Stirling, de Havilland Hornet and Armstrong Whitworth Whitley. The desire to preserve the RAF's rich history, as brief as it was by the end of World War Two didn't end there; personnel at air stations around the country began collecting aeroplanes to form their own collections, which saw public interest during open days and airshows. Places like Biggin Hill, Colerne and St Athan had, by the late 1960s amassed large numbers of historic and often eccentric airframes, some of which were maintained in runnable condition and which survive to this day as a part of RAFM's collection.

An actual RAF museum was discussed on and off within Whitehall following the war and in 1965, concrete efforts were made to establish such a thing. Plans immediately began to formulate around where a possible location might be for the RAFM, and one idea was on the banks of the River Thames in downtown London, and plans were drawn up for this rather restricting venture, which came to nothing for that very reason - no room to expand. Sites around the country were visited, including RAF Henlow, which had become a repository for historic airframes that the RAFM and the RAF Air Historic Branch (AHB) had decided were worth saving. A bit about the AHB, it was initially established in 1919 but at the end of World War Two was at RAF Stanmore in North London with the aim of preserving RAF records and it holds that role to this day. From Stanmore it moved to Bentley Priory, just up Stanmore Hill and was there for many years until moving to its current location at RAF Northolt following Bentley Priory's closure as an RAF base in 2008. Most of the airframes that littered air station collections and gate guardians around the country belonged to the AHB and it was AHB airframes that went into the RAFM at Hendon on opening in 1972, but in 1998 these were, in an administrative stroke of the pen transferred to RAFM operation and ownership. There's more to come on the AHB, so keep an eye out.

RAF Bentley Priory, home to the AHB and administration HQ for a massive fleet of historic airframes scattered across the country.

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1707 Bentley Priory Spitfire

Back to the RAFM and RAF Hendon was still an active airfield in the late 1960s when the decision was made to establish the RAFM on site at Britain's most historic military aerodrome and one of its earliest. In August 1965, RAF librarian Dr John Tanner visited the Grahame-White factory hangar at Hendon for a possible location, but it wasn't for another year that this was followed up with further action. Although the Grahame-White hangar certainly had historical provenance, more about Claude Grahame-White and his aircraft factory later, a decision was made in 1967 that the RAFM should occupy the old wooden Belfast Truss Great War vintage hangars still occupying the airfield's eastern perimeter. To facilitate their preservation, as well as the aeroplanes that were to go within them, they were encased in a modern 1970s era concrete shell, which serves as the administration headquarters of the RAFM to this day. Within this building was the offices and facilities required for a modern museum, including an archive and library with its own reading room, still in use. This is the RAFM HQ building, with the archive occupying the top floor, the domed ceiling on this side of the entry vestibule are the archive and on the other side is the library, with the Reading Room located above the entry. The big hangar numbers are a recent addition and I'll explain their reason later.

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Opening on 15 November 1972 by Her Majesty the Queen, the RAFM was run as a civilian entity, rather than a branch of the service, but with Ministry of Defence funding, which given the nature of the service was not a huge amount initially and the museum relied, and still does today on corporate sponsorship. Soon the original hangar spaces were expanded on and new structures were incorporated into the site, the Bomber Command Hall, where R5868 can be seen above, and a new remote structure, the Battle of Britain (BoB) Hall, which formerly opened its doors in 1978. This was built following the collection of suitable airframes for an exhibition titled "Wings Of The Eagle", which saw elements of the RAFM's extensive collection of wartime Axis equipment go on public display together. Today the BoB Hall has been revamped, which has caused much criticism among enthusiasts for various reasons, but the museum, I am assured had justifiable reason to make the changes, and besides, the aircraft that inhabited it are still on display, at Hendon and Cosford. As an interesting little aside, the mannequins that adorned the entrance to the old BoB Hall were modelled off the Royal family!

A scene from the BoB Hall featuring genuine summer 1940 veterans Bf 109E and Fiat CR.42, which we'll see later in this thread as they are both still at Hendon.

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BoB Hall

So let's get into some controversy and a realistic appraisal of how museums survive in a modern environment where they are competing for attention with other attractions in the greater London area. A world renowned museum might not necessarily be the destination of choice for visitors to London, nor even families wishing to keep them and their kids occupied in the weekend, so the RAFM has work to do to interest people in this modern digital age. Several years ago, the trustees of the museum conducted a review of the museum's future, which included visitor surveys over a period of several years to establish what it was that the general public wanted from a museum about the RAF. The results were alarming. Visitor numbers remained relatively static over the period in which the research was carried out, around 100,000 per year, but expectations were generally not being met. At over 70 percent of all attendees, the largest visitor demographic was families with children, often who had little or no understanding of the RAF or of aviation in general. In saying that however, many in this demographic did have a family member or friends who had or currently served in the RAF.

In this age of instant gratification through social media and the world wide web, wandering about a darkened hall full of static aeroplanes with nothing describing them except a bracket of text on a flat board was anachronistic. The museum was also accused of lacking context; there was little that advised how the aircraft were used within the greater structure of the RAF and by far the biggest request made by the public was that the museum provide more information about people involved with the aeroplanes and the service in general. People want to hear about people, and the RAF Museum did not provide this. Today, the entry to the museum is in what used to be the BoB Hall, but is now Hangar 1, "RAF Stories" and "First To The Future". The entry to the museum display proper, with a wall of headgear worn by RAF personnel over the years.

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There will be more on these choices as we meander our way around the site, but suffice to say, reviews of the museum since the changes were made have largely been positive, the museum is now catering to the requests of the largest visitor demographic. The reality of this move is that if it didn't the museum would not survive. The RAFM is a National Museum, so it is free admission to the public and it relies of public attendance for continued funding, making money from special exhibitions and shop/cafe sales. This is the reality of museums today, folks - either accept it or don't.

So, soap box away, let's look at some aeroplanes. We begin with one of the treasures of the collection, the world's only surviving complete example of an Airco DH.9A. This particular aeroplane has a fascinating history, and I've referred to it on this forum on numerous occasions. built as DH.9A F1010 by Westland as one of a batch of 150 aircraft powered by the US built 400 hp Liberty V8 engine, the aircraft first entered service in August 1918 and was chosen to be financed by His Serene Highness, the Nizam of Hyderabad, after whom the aeroplane was named, entring 110 (Hyderabad) Sqn. (Hyderabad was, at one stage a state within a state in India, and has a long and turbulent history - see here: Hyderabad - Wikipedia )

The DH.9A perched above the entrance to the new display area. Curiously it's missing a tyre.

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Going into action in September 1918 in France, F1010 took part in several bombing raids against German cities, including Frankfurt and Koln, and it was during an attack on Kaiserslautern on 5 October 1918 that the aeroplane was brought down, either by engine failure or AA, but it landed intact and its crew survived and were interned. Following this, the aircraft's movements are murky, but while it was undergoing restoration back in Britain, German Lozenge camouflage covering was found. Eventually the aeroplane resurfaced in the big Deutsches Luftfahrt Sammlung in the heart of Berlin, opened in 1936, the year of the XIth Olympiade and the world's largest aviation museum at the time. In 1943 during an air raid by the RAF, the museum was destroyed by fire, and in an act of bravery, staff members dragged half smouldering aircraft from the ruins following the raid and packed them on to trains east, ending up in Poland. Again, what happened to the DH.9A in this time is not immediately known, but it became apparent in the mid 1960s that a museum behind the iron curtain had a cache of historic Great War airframes and one of them was an ex-RAF DH.9A, devoid of wings and still bearing scars from its ordeal in Berlin. In 1968, private negotiations began with the museum housing these treasures, today the excellent Muzeum Lotnictwa Polskiego (MLP) in Cracow, an arrangement was made that the DH.9A would be exchanged for a Spitfire, XVIe SM411. By 1971 the details were being hammered out between the RAFM and the MLP, but it was not for another six years that an RAF low loader ventured forth through Warsaw Pact held territory to Poland carrying a Spitfire! This was known as Operation Fair Exchange and by 28 June 1977, the remains of the last surviving DH.9A were safely within the RAFM Store at Cardington.

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That's it for today, the word count is easily exceeded in these posts, so more to come from Hendon soon.
 
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So, we continue at Hendon with displays in the RAF Stories hall, which is a darkened hangar full of stuff, just not a whole lot of aeroplanes - the focus is on the visitor experience and that becomes apparent from examining the display boards, which, far from dumbing down information, as the museum has been accused of doing, now provides display boards with audio and visual touch screen plasma capacity, along with the usual written information and for the visually impaired, 3D models of the exhibits specifically referred to. In this image we see the display board for the DH.9A referred to in the previous post and its wee Three Dee model.

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The focus for this image is of course the striking Avro Blue Steel stand-off bomb as the British call it, although using more accessible language, the Blue Steel was a cruise missile, surrounded by a range of ordnance in a display focussing on one of the RAF's core roles; the delivery from the air of things that go bang. A bit of interesting stuff about the Blue Steel. A considerable achievement that saw frontline service for a paltry seven years, the Blue Steel was a joint venture between Avro and Bristol Siddeley, who delivered the Stentor propulsion unit, developed from research done by the Rocket Propulsion Establishment at Westcott, where trials were conducted with hydrogen peroxide as rocket propulsion. This work was based extensively on German work from the Walther Werke at Hamburg and, just like in the United States, German scientists and pieces of hardware were brought to Britain to further research into this area. While the USA based German scientists at Huntsville, Ala concentrated on building massive liquid fuelled rockets the size of cathedrals, the British, who did not rely as extensively on its captured Germans, preferring to take what they had done and building on it with a British twist, concentrated on High Test Peroxide (HTP) and its potential, as for a given size of fuel load a greater amount of thrust could be derived from HTP and Kerosene based rocket motors, therefore HTP rockets could lift similar loads to their non-HTP counterparts, but at a lower overall weight and size.

The Stentor was a two-part motor, with a large and small thrust chamber, the larger igniting four seconds after release, the missile dropping 300 feet before the motor is ignited, boosting the thing to speeds up to Mach 2. Two seconds later, the flight controls unlock and the missile accelerates to its preset altitude and once this is established, based on the mission profile, the smaller motor takes over and the rocket then cruises to its target. The motor produced a total of 20,000 lbs thrust, the larger motor 16,000 lbs for a few seconds before it shut off and the second chamber ignited. Guidance was provided by a Elliot Brothers inertial guidance system, but the Blue Steel didn't have a very long range, only 200 miles, which put the carrier aircraft at a significant disadvantage, nonetheless, the Blue steel could reach altitudes in excess of 100, 000 feet, although its programmed height was usually 70,000 feet, the former well out of range of Soviet SAMs.

Next, a weapon we are all familiar with on this forum and for that reason I won't go into detail about it, the 4,000 lb blockbuster High Capacity Bomb Mk.II owing to the three nose pistols visible in this shot. More (surprisingly good) information here:


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This next object is a most peculiar thing and was the first British hydraulically assisted gun position to go into service, the Nash and Thompson FN.1, commonly known as the "Lobster Back" for obvious reasons. Armed with a single .303 inch Lewis machine gun, the FN.1 was the first operational turret to use the hydraulic control system designed by Archibald Frazer-Nash and Gratton Thompson, and was fitted to the rear cockpit of the Hawker Demon two-seat biplane fighter, which entered service with 23 Sqn in 1933. These two gents formed Nash and Thompson Engineering, Archie Frazer-Nash's firm, aside from producing high end sports coupes produced hydraulic working gear, hence the "FN" designation in Nash and Thompson turrets.

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The following is a description of how it worked, taken from British Aircraft Armament Vol.1: RAF Gun Turrets, by R Wallace Clarke.

"The turret consisted of a circular drum attached to an inner ring which rotated on roller bearings in an outer ring bolted to the top longerons of the fuselage. The gunner's windshield consisted of four aluminium sections which pivoted into each other like a lobster shell. It rotated with the turret and was connected by linkage to the gun and seat , so that when the gun was halfway down from its elevated position, the cowl began to unfold. The seat was raised and lowered by means of two hydraulic rams which were interconnected to the gun cradle, ensuring synchronous movement at all angles of fire.

"The gun was mounted directly on the hydraulic valve box. At the rear of the gun were twin control handles which operated the hydraulic valves, controlling elevation and turret rotation. The gun was fired by means of a Bowden cable attached to triggers on the control handles.

"A Barr & Stroud Mk.IIIA reflector sight was fixed to the gun on the main production turrets, though some early models used the Norman Vane sight. A rotating service joint was situated at the base of the turret, providing pressurised oil to the power system. Oxygen was supplied through rubber piping connections, and electrical power entered through slips rings and brush gear. An automatic trip system was fitted which stopped rotation by disengaging the rotation valve when the gun was about to aim at the tailplane or wing.

"A hydraulic recuperator was fitted inside the turret in the pipeline between the service joint and valve box. Stowage for four 97-round drums was provided inside the turret and an additional peg was located on the fuselage decking. Footsteps were provided on the fuselage to facilitate entrance to and exit from the turret."

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Next, Spitfire V BL614 from its lofty perch has a distinguished history, including display at one of the RAF station museums in the '70s, at Colerne, mentioned in the introduction to this thread. Built by Vickers Armstrong at Castle Bromwich, BL614 went to 611 Sqn at RAF Drem, East Lothian in February 1942, during which time it was involved in convoy sweeps. It then was transferred to 242 Sqn, then 222 Sqn, (working its way through commonwealth units, the former a Canadian unit, the latter a South African unit), with whom it was flown to Biggin Hill to take part in Operation Jubilee, the troubled invasion of Dieppe in August 1942. Following that debacle, the unit moved back to Scotland for a period at Drem again, then Ayr, Strathclyde on the other side of the country for more convoy patrols. A Transfer to 64 Sqn saw the aeroplane head south of the border again and it saw action escorting USAAF medium bomber raids, but by November 1943 the aeroplane had been seconded permanently to a secondary role, arriving at No.6 School of Technical Training in December.

Following the end of the war, BL614 never left RAF service, being seen at various locations, including RAF Creedenhill as a gate guard, as many Spitfires saw use post war, before being rescued from its purgatory, as gate guardianship of airframes very much was/is by Spitfire Productions in 1967 for a role in the feature film Battle of Britain. Following cessation of filming it went to the Station Museum at Colerne as a substitute for Spitfire I P7350 that went to the Battle of Britain Memorial Flight, before being refurbished at St Athan for display at the new RAF Museum at Hendon. It's depicted in 222 Sqn markings as it was during Operation Jubilee.

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Built by Hawker Siddeley in March 1962, Folland Gnat XR977, as blatantly obvious served with the Red Arrows at RAF Kemble between April 1976, as Red 3, and September 1979, when the Reds exchanged their Gnats for Hawks. Following its retirement from the Reds it went to Cosford as a training aid before being parked for display across the airfield at the Aerospace Museum, an RAFM outstation at the time. During its RAF career, XR977 suffered a belly landing at the hands of RAAF exchange pilot Sqn Ldr Mark Fielding, who was at RAF Valley undergoing the advanced pilot training school. This was at a time when the RAAF couldn't train its pilots quickly enough to meet its needs and trainees were sent to the UK on exchange in the late 1960s/early 1970s.

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Finally, a look at the airframes in the RAF Stories gallery, with Westland Sea King HAR.3 XZ585 to the left, whose most notable action from a public perspective is having been flown by HRH Prince William, Duke of Cambridge during his time flying with 202 Sqn at RAF Boulmer, which seems to appeal to the public; anything "Royal" still does, and we'll see more of that during our venture through the museum.

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There is one more full size aeroplane left in this hangar and we'll look at that before we leave the building, but in the next instalment, well be focussing primarily on things, some of which never went beyond the conceptual model stage...
 
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Thanks all. In this instalment we go back in time and examine some items of interest that explore aspects of the RAF's history that are worth telling but often get overlooked in the clamour to look at aeroplanes. This building does have things of interest and if one takes the time, more discerning visitors will find them as intriguing. These things are located in the RAF - First To The Future gallery space, highlighting technological developments the RAF partook in, some of which are indeed historically significant, although this part of the building is full of those pesky hands-on interactive things that enthusiasts rail against.

We take a look at two defining moments in the history of British aircraft propulsion first, starting with this Roll-Royce R engine. As we are all aware, the R put RR at the forefront of piston engine development for the next 20 years. Here is the surprisingly detailed wiki page on its development, which is definitely worth reading through:


This particular engine is R.25 and was fitted to the Supermarine S.6B S1596 flown by Flt Lt George Stainforth in which he prepared for his assault on the world air speed record, achieving it in S.6B S1595 on 29 September 1931, of which both the aeroplane and engine, R.26 survive in the Science Museum, South Kensington. Following removal from S1596, R.25 went into the world land speed record breaking monster Thunderbolt, built and driven by Capt George Eyston, which was powered by two Rs, the other being the previously mentioned R.26, and beating the record on 19 November 1937, Thunderbolt reached 312 mph, Eyston raising the record to 345 mph within the year.

Here's some data on the big beast:


Intriguingly, Thunderbolt met its end in New Zealand of all places, following display in the British Pavilion at the New Zealand Centennial Exhibition at Rongotai, Wellington in 1939, and a promotional tour of the country. During WW2 the car remained in New Zealand, devoid of its two R engines, which had been removed and returned to the UK, but the storage shed, where the car was kept caught fire in 1946 and it was reduced to a wreck. The fire also consumed some rare and historic surviving RNZAF machines too, including a Gloster Grebe and Hawker Tomtit. Following the demolishing of the building, the Thunderbolt's remains sat, rather pathetically on the side of the road for awhile, no one realising exactly what it was, until it was dragged across Rongotai and unceremoniously buried in landfill to create the new Wellington Airport's runway. A bizarre ending to a remarkable machine.

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Meanwhile, in another part of the country from Derby, where the R was undergoing testing, a young Frank Whittle was tinkering with an idea he had had for awhile, of producing power by compressing air and mixing it with raw fuel to drive a turbine. This is a Power Jets W2/500 engine, the forerunner to the Rover W.2B and Rolls-Royce Welland, which were the first production British jet engines. Technical information written by the Late Peter Berry, a former colleague of mine from my museum years in the UK:


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Now, a range of intriguing models on display in the gallery, each with promise, but most of which failed to inspire production, in some cases not even a full size example of these were built. We begin with the rather large and far too ambitious Tarrant Tabor, which was actually built, but crashed on its maiden flight. Info from the usual wikiplace on this lofty design.

"The Tabor was the first and only aircraft design produced by W.G Tarrant Ltd, a well-known property developer and building contractor at Byfleet, Surrey, which had been subcontracted to build aircraft components during the First World War. In late 1917 Tarrant assembled a design team, led by Walter Barling, hired from the Royal Aircraft Factory and Marcel Lobelle, hired from Martinsyde to design a very large long-range heavy bomber, capable of bombing Berlin. Construction was primarily in wood with conventional tri-plane strut-braced wings and a monocoque fuselage built up from ply veneers. The Tabor was originally planned as a biplane powered by four 600 hp Siddeley Tiger engines. However delays in development of the engines meant these would be unavailable and so the aircraft was redesigned to use six 450 hp Napier Lion engines to give a similar power/weight ratio, and a third, upper wing added.

"The final design had a wingspan of over 131 ft (40 m), with the central wing of much greater span than the other two. Four engines were mounted in push pull configuration pairs between the lower and middle wings with the other two mounted in tractor configuration between the middle and upper wings, directly above the lower pairs. The tractor engines used two-bladed propellors, the pushers four-bladed ones. With the end of the war conversion to a passenger aircraft was planned.

"The Tabor's maiden flight was from the Royal Aircraft Establishment at Farnborough on 26 May 1919. The Tabor, with two pilots and five passengers was taxied around the landing field using only the four lower engines. Satisfied with the behaviour of the aircraft the crew decided to take-off. The tail was off the ground but it was still running on the main wheels, intermittently lifting off. When the top two engines were started the aircraft pitched forward, burying the nose into the ground and seriously injuring all on board. The second pilot died after reaching hospital and the pilot died of his injuries a few days later. Later analysis suggested that the upper engines were so far above the fuselage that they forced the nose down when driven up to full power. The situation may not have been helped by the addition of 1,000 lb of lead ballast in the nose against the wishes of Tarrant."

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Next, the elegant Fairey Long Range Monoplane.

"The aircraft was designed to meet Air Ministry Specification 33/27, issued by the Directorate of Technical Development (DTD) in December 1927 after the failure of three attempts by the RAF to break the absolute distance world record flying Hawker Horsley bombers. According to a Ministry spokesman in the House of Commons, this aircraft was to be constructed not just "for a specific record," but as a serious study into methods of increasing the range of aircraft. In order to soothe the anxieties of the Treasury, the aircraft started life as the Postal Aircraft. The pointed nose and sleek lines of the prototype gave rise to the nickname "Eversharp," after the maker of pens and mechanical pencils.

"Although other configurations were studied, after wind tunnel testing a high wing was chosen, allowing a gravity feed from the fuel tanks. The wing's spars were of wood with a steel pyramid system of internal bracing intended to add torsional rigidity and ensure that flight loads were evenly distributed between the spars irrespective of the position of the centre of pressure, and were fabric covered. The fuel capacity was 1,043 Imp gals (4,742 L) and the system used a gravity feed and mechanical fuel pump in sequence; a wind-driven, emergency back-up pump was also provided. There were other features dedicated to the long-range function; there were two parallel oil filter circuits, allowing one filter to be removed and cleaned while the other remained in operation. The aircraft was even equipped with a pneumatic bed for a reserve pilot. After extensive testing using a Fairey IIIF and a DH.9A, the Napier Lion XIA of 570 hp (430 kW) was selected late in the design process."

Data on this intriguing machine here:


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Next, we skip ahead a few years into the future and a model of the Supermarine Type 535, a prototype step on the way to the rather dismal Swift interceptor that saw better use as a tactical reconnaissance platform. The 535 was derived from the Supermarine 510, which was a swept wing version of the Attacker naval fighter and of which a single prototype survives in the Cobham Hall storage facility for the Fleet Air Arm Museum at Yeovilton, incidentally on loan to the FAAM from the RAFM.

Some good development information on the Swift at Damien Burke's excellent and comprehensive Thunder and Lightnings website, where, if you are a fan of post-war British combat aircraft, you're gonna easily be immersed navigating your way through:


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This next object is a wind tunnel model of the de Havilland DH.117 interceptor designed to F.155, a requirement for a high speed high altitude interceptor issued in 1955. Background text on F.155 from wiki:

"This was a specification issued by the British Ministry of Supply on 15 January 1955 for an interceptor aircraft to defend the United Kingdom from Soviet high-flying nuclear-armed supersonic bombers. Discussion about the need for a new supersonic interceptor had been ongoing for some time in the early 1950s, and several designs introduced, but improving radar systems and weapons mooted the need for better aircraft in the short term. Information about new Soviet supersonic bomber designs emerged in 1954, sparking serious consideration for the first time. The Requirement emerged as a much larger and longer-range system than previously studied. The Requirement called for aircraft to be in service by 1962, the same date as the Tupolev Tu-22."

Considered the safest design submitted, out of the tender submissions the DH.117 was placed at a distant fourth, the firm had at that time done considerable research into weapon systems, such as the Fire Streak AAM that the winning aircraft was to carry and eventually went into service equipping de Havilland's own Sea Vixen and the English Electric Lightning interceptors. This stood the firm in good stead in terms of the weaponry requirement, although the rather large Red Hebe missile could only be placed on the aircraft's wingtips, the design being the smallest of those proposed. This seemed to be the main preoccupation of DH's tender submission, the weapon system, with less attention paid to the airframe itself, which was to be constructed of light alloys, but using as much titanium in pure and alloy form "...in regions subject to higher temperatures that are acceptable for light alloy and as a replacement for steel wherever possible", as the tender document stated.

Powered by a pair of the company's own Gyron Junior engines, with a Spectre bipropellant rocket motor powered by HTP and kerosene in the extreme rear fuselage, it was designed to be able to reach an altitude of 60,000 feet in six minutes, which was slower than the Fighter Command recommended time of 3 minutes to altitude. The aircraft did have a commendable maximum speed of Mach 2.35 and an extended loiter time of 40 minutes, well above the expected 15 minutes in the specification. Being technologically the simplest design, the firm determined that it could have a prototype flying in December 1958, with the second prototype in January 1959, with production deliveries in early 1962, stating that this could happen only if "...certain and very essential steps and decisions are taken early and adhered to." This alluded to the design's advanced nature and the ministry's tendency to alter specifications and requirements at its whim, which was a fair point, but that snark might have contributed to the ministry's decision not to choose the "safe" DH.117.

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This is the highly advanced Avro 730 supersonic nuclear bomber. A good page of historic information on this ambitious project here:


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Information on the aircraft's advanced features:


"The Avro 730 was a very high speed aircraft, originally designed solely for aerial reconnaissance purposes. In order to achieve the desired high speed performance, the aircraft consisted of a long, slender fuselage with a high fineness ratio; a small tapered almost-rectangular wing was mounted centrally on the fuselage. The characteristics of the wing, being relatively short and straight, enabled the lengthy aerial for the primary reconnaissance sensor, the Red Drover X-band radar, to be contained within the fuselage, as the wing provided little obstruction and therefore interference with the radar. A total of four Armstrong-Siddeley P.156 engines, two each being mounted in an over-under arrangement in pods positioned at the extreme tips of the wings, provided propulsion. The engine nacelles included variable-geometry air intakes, while the engines themselves were equipped with convergent-divergent nozzles. Alternative arrangements of two or three shock cones could have been installed on the nacelles.

"The aircraft adopted an atypical tail-first configuration; this approach had the effect of greatly reducing trim-drag while also generating increased lift at slower speeds. Longitudinal control was provided by the nose-mounted tail plane via trailing edge elevators, lateral control was enacted by ailerons located on the wing's trailing edge, and directional control was achieved by a conventional rudder. All four of the primary flight control surfaces were actuated by a quadruple-redundant electro-hydraulic control unit, designed by Boulton Paul. Fly-by-wire electrical controls and automatic control systems were also to be employed on the type. The undercarriage, designed by Dowty Group, used an arrangement of a single centre-fuselage main unit complete with four wheels, a nose unit with two wheels, and a pair of outriggers located on the engine nacelles.

"The Avro 730 lacked a conventional canopy in order to maintain the fineness ratio, the cockpit featured only two small windows facing to the side. On the intended initial development models, a raised canopy would have been present for direct vision; however, production aircraft would have made sole use of an electrically operated retractable periscope in order to provide an external view, including during take-off and landing. As originally envisioned, a crew of three would be carried: pilot, navigator and radar operator. All three were to be contained within the same compartment, which was both pressurised and refrigerated for passenger comfort; lightweight ejection seats were to be provisioned for all crew members."

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RAFM 20

Working our way through to the late 1960s, we see a conceptual model for the UKVG project, of which I have written a little about elsewhere on this forum:

"The Tornado was developed quite separate to the AFVG project, the UK deciding on the UKVG project in 1967 based on VG work done in Britain, although the intent with the UKVG project was for joint foreign investment. The original MRCA came about as a conglomerate of the UK and F-104 Starfighter operators in Europe and Canada, who formed a working group to investigate a modern strike airframe. By late 1968 Canada, Belgium and the Netherlands had dropped out, leaving Germany and Italy."

This saw development following the collapse of the AFVG, Anglo-French Variable Geometry programme, at a time when, following the cancellation of the TSR.2 in early 1965 the RAF was desperately scrambling to seek a next generation strike aircraft and thus prompted the British government to sell its soul to whichever foreign buyer wanted it to get a new tactical bomber. It eventually got second hand Buccaneers, although the UKVG was an interim step before the excellent and long-lasting Panavia Tornado, which kind of resembled hopes for the OR.339 requirement that resulted in the specification to build TSR.2, OR.343. The concept model of a Luftwaffe UKVG.

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RAFM 24

Another promising also ran was what was euphemistically called the Thin Wing Javelin, a supersonic variant of the Gloster product that inhabited RAF squadrons in the late 50s and early 60s until the arrival of the Mach 2 supersonic hotrod Lightning. This was a deliberate attempt to keep the Javelin project current and ultimately required extensive redesign to the extent that it barely resembled the aircraft it was named from.

Expected to have a maximum speed of Mach 1.6 with a higher ceiling that contemporary foreign interceptors, the aircraft was to have a supersonic optimised delta wing, the new jet was to be built to Specification F.135D Thin Wing Gloster All Weather Fighter, an update of the initial F.118 specification and a prototype was ordered in 1954 to be serialled XG336. Gloster prepared a full-scale mock-up beforehand, but expectations and supersonic research, using wind tunnel models like this one below saw much alteration to the design, including an area ruled rear fuselage, in keeping with what was becoming trendy on foreign designs such as the F.106 Delta Dart, whose predecessor the F.102 the original Javelin was a contemporary of.

The final incarnation of the thin-wing Gloster P.376 just before cancellation was a large aircraft carrying the Vickers Red Dean all-aspect AAM as a possible contender for F.155 previously mentioned, but its cancellation in 1957 as a result of the Duncan Sandys' White Paper meant that the concept of a supersonic Javelin died with it. Of note was that the Thin Wing Javelin did not meet the stringent performance requirements of F.155, and at the time the Air Staff investigated the possibility of buying the doomed Avro Canada CF.105 interceptor, but the decision to pursue F.155 also killed that idea as the Arrow did not meet the performance aspects of that specification - it was too slow in the climb and maximum speed aspects of the requirement.

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RAFM 26

That's it for today. Next, we say farewell to this building and the last aircraft in here and then we take steps back into The London Aerodrome, Hendon's own distinguished history.
 
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I can't see why any decision to personalise the stories can ever be controversial.

Me neither. British (online) enthusiasts get their noses put out of joint real easily, as you probably know. The RAF Museum has been subject to quite a bit of online hate and this new look certainly has added to that and at the time of my visit, when I took these pictures, the museum had only just reopened the new bits. I took the opportunity to interview the director with the intent of turning it into an article, but the interview wasn't the best and wasn't all that revealing, partly my fault and the fact I was given a half hour, which stretched to nearly double that, but the final product was never published and I'm kind'a glad because it wasn't a good article. Nonetheless there was some useable stuff that did make it into publication in other articles.
 
We are still in the big former Battle of Britain Hall (old habits die hard) and we are looking at Short Sunderland V ML824. The aircraft has an intriguing history that is worthy of recounting here in brief, because there were charitable individuals who thought it important to preserve examples of these big beasts in the land of their origin before they became extinct.

Constructed by Short Bros and Harland at Queen's Island, Belfast as a Sunderland Mk.III in June 1944, it was swiftly converted to a Mk.V following entry into RAF service. Based at Castle Archdale, the aircraft joined 201 Sqn as its first Sunderland V and began anti-submarine patrols, which occupied the aircraft throughout the rest of the war, moving to 330 Sqn at Sullom Voe, Shetland, before war's end. In September 1945 the aircraft was struck off charge and stored at various places around Scotland, including Wig Bay, where it was reconditioned for service during the Berlin Airlift in 1948, but it ultimately wasn't required. In 1950 it was returned to its manufacturers in Northern Ireland and underwent refurbishment for service with the Aeronavale and departed in October 1951 for Dakar, Senegal with Flotilles F7, 12S, 27F and 50S. The aircraft remained in Aeronavale service until 1960, after which it was flown to the naval base at Lanveoc, south of Brest, France, where it made its last flight in December that year, the very last flights of the type in French service.

ML824 hasn't been moved from its position in the hall since it was put there in 1978. Note the rear keel beaching trolley alongside. Originally the aircraft stood on its own beaching gear outside the museum but the massive metal wheel equipped stanchions that attached under the main wings either side had corroded so badly they were in danger of collapsing, so they were replaced with the cradle the aeroplane sits on.

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RAFM 28

Meanwhile, back in the late 1950s, the RAF had retired the type, but there were no examples remaining in the UK and so one at Seletar in Singapore was being readied for a flight to Britain in 1959, but it slipped off its beaching gear and the rear fuselage was twisted so badly the aircraft was written off. After this rather unfortunate accident, a Welsh enthusiast called Peter Thomas raised funds privately with the intent of bringing an RNZAF example back to the UK, but the sheer cost and technical difficulty of flying a Sunderland from New Zealand on the other side of the world to the UK was too great. Following this avenue, Thomas wrote to the French government, who still had three of the type left, acted positively and very kindly donated one of them, ML824 to Thomas' Short Sunderland Trust and in March 1961 it made its final flight to Pembroke Dock, where the trust had set up base. Following a positive reception from the public that a Sunderland had returned home, one of the last French Sunderlands remaining went to the IWM and can be seen at Duxford, in 1968 the trust's secretary wrote to Dr John Tanner proposing preservation within the RAF's proposed museum that he eventually became director of. With acceptance, ML824 was dismantled and taken by ship up the Thames from Pembroke, then by road to Hendon in 1971, where it was reassembled in the Grahame-White hangar, which we'll see very soon. Finished with the Sunderland trust, Thomas eventually went on to form the Skyfame Museum at Staverton, from where the IWM at Duxford received some of its aeroplanes once Skyfame collapsed in 1978.

Ml824 was at one stage open to the public, and although it wasn't at the time of my visit, I have been assured this will happen again. One element of the aircraft's display that has angered members of the enthusiast community is that the struts holding the auxiliary floats under the wings have been shortened to prevent the public bashing their heads against the floats as they walk around the aircraft. During my visit, it was explained to me that the originals remain in the collection and that the alteration can be reversed (so, calm the eff down!).

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RAFM 27

Next, I changed my mind about this item as I originally wasn't going to devote the time of day to it, but decided against that whilst researching the items directly outside the hall, that item is the seaplane tender ST.206. built in 1931 as the sixth example of its type with the role of servicing flying boats and other RAF water borne aircraft, the tender was based at Calshot first, then Catfoss, and in 1942 it was converted into a fire tender, being transferred to Northern Ireland in support of the RAF's flying boats at Castle Archdale, where it would have briefly encountered ML824 with 201 Sqn. In 1946 it was struck off charge and sold through the Admiralty into civilian hands, its actual movements unrecorded until 1990 when it was acquired privately for conversion back into seaplane tender condition and in 2004 it sailed to Normandy as part of a flotilla during the 60th anniversary of Overlord. By 2008 it was for sale, but it wasn't for two years that the RAFM purchased it, arriving at Hendon in May 2010, the last RAF launch to fly the Ensign. Apparently, back in the 1930s, the boat was worked on by T.E. Lawrence, who was involved in the testing of this type on its acceptance into RAF service.

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RAFM 09

ST.206 is currently indoors, unlike these next two RAF motor boats, who have spent the entirety of their display life at Hendon outside in each other's company, the launches 1374 and 2757. The former is a 63' Pinnace Mk.I and was primarily used as a multi-use tender at RAF marine facilities at home and abroad, this one having served at Gan Island, Diego Garcia. Returning to the UK in 1969, the pinnace remained in service until the disbandment of the RAF Marine Branch in April 1986, remaining in civil hands until 2002. It has been at Hendon where it has sat next to its display mate Rescue Target Towing Launch 2757 since 2003. This was built by Vosper in 1957 and powered by two 1700 hp Rolls-Royce Sea Griffon engines, RTTL.2757 entered RAF service in 1958, remaining with the RAF Marine Branch until 1977, when it was allocated for display at Hendon. Note their deteriorating wooden hulls and ongoing restoration, a consequence of spending their life outdoors.

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RAFM 30

Now, we visit one of the oldest and most significant structures on the museum site, the former London Aerodrome, Hendon's watch office block. Built in 1915 as an extension to Claude Grahame-White's aircraft construction enterprise, the building incorporated his office, boardroom and accounts department. From the former, Grahame-White could view the activities on the aerodrome closely, which by that time was primarily personnel training for military service with the Royal Flying Corps and Royal Naval Air Service through private flying schools - we'll sneak a peek at the office next. A bit of early history of the aerodrome while we have a moment.

Following a few balloon flights in the late 19th century, the first flights by an aeroplane from the Hendon site we know today was conducted by French aviator Louis Paulhan in 1910, who, alongside Claude Grahame-White who took off from Park Royal, were taking part in the race to fly between London and Manchester sponsored by the Daily Mail newspaper, back when that entity actually did something positive for society. Hendon began its lengthy career as an aerodrome later that year, the land being purchased by Grahame-White for the construction of a flying school and aeroplane manufacturing facility. Soon, the Grahame-White School was joined by other training outfits, such as the Bleriot School, established by the by then historic French aviator who a year earlier had flown solo across the English Channel, the Hall School, the Ruffy-Baumann School and the Beatty School, established by US aviator George Beatty and aircraft constructor Fredrick Handley Page, whose company a year earlier had become the UK's first publicly traded aircraft manufacturing firm. During the Great War the Grahame-White office block was constructed among a long line of hangars that had sat parallel to what became known as Aerodrome Road. The office block following its stunning recreation and reopening on the museum site.

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RAFM 33

Jumping ahead in time, following closure of RAF Hendon in 1987, the buildings fell into disrepair on a remote site owned by the Ministry of Defence, but the museum heads eyed them anxiously, fearing their destruction, bearing in mind their significance to the airfield's history. In 2003 as a part of the redevelopment of the museum in the centenary year of powered flight (with Heritage Lottery funding), those prize structures were thrown a lifeline and they were earmarked for preservation, on the condition they be removed from their original MoD owned site, which was up for sale. This of course was done and in 2010, the office block was dismantled brick by brick and removed to its current location and condition after extensive restoration. The main electrical junction block for the aircraft factory inside the building.

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RAFM 35

So, who was Claude Grahame-White? Well, Wikipedia tells his story lengthier and better than I can here, there's even a picture of the interior of the Grahame-White Hangar at Hendon, which we venture into next:


His office has been faithfully recreated from photographs.

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RAFM 34

Now we look at one of the pioneers of aircraft preservation in the UK, who, along with his better known contemporary Richard Shuttleworth, was responsible for the collectionof a large number of Great War and earlier flying machines, a portion of which are now in the RAFM collection, Mr Richard G. J. Nash. Historians on the subject don't know who out of the two Richards began collecting aeroplanes first, but Nash began sometime after the Great War, becoming wealthy from the construction of automobiles at Brooklands in Surrey. It's also not known exactly what he had collected before WW2, when he was evicted from his premises in June 1940, but his collection included a Wright Flyer, two Sopwith Babies, a Fokker Dr I, a Deperdussin, a Blackburn Monoplane and an Antoinette. After the end of WW2, his collection was a bit smaller owing to air raids and so forth on the storage sheds he kept his aeroplanes in - the Luftwaffe must have known he was up to something - the formerly mentioned types have long since disappeared. Items from the two war damaged Sopwiths ended up with the Fleet Air Arm Museum at Yeovilton and went into its recreation of the type, as a Blackburn built Baby.

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DSC_0416

By 1951 however, Nash's collection was at RAF Hendon and the Royal Aeronautical Society (RAeS) began to take an interest in the surviving aircraft, representing a significant number, despite the wartime deprivations and included some of the aeroplanes we are about to see, this beautiful Bleriot XXVII and this Avro 504K, and others lodged within the Grahame-White hangar. Realising the significance of the collection, the RAeS had the airframes moved from Hendon to the British European Airways hangars at Heathrow Airport, where restoration was undertaken on some of the aircraft, but ultimately, acquisition by the Ministry of Defence in 1963 saw the lot moved to RAF Henlow, where the genesis of the RAFM collection began. Two survivors that have escaped the RAFM's clutches include a Maurice Farman F.40 and Hanriot HD.1, both of which are now in New Zealand in the hands of Peter Jackson's The Vintage Aviator firm awaiting restoration.

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RAFM 36

Next, more to come from the Grahame-White Factory hangar and the Nash Collection.
 
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