Recent content by Sarge714

I don't think you understand what Inertia Coupling is. Calc the physics involved and I think you'll be surprised what you see with the Fw190D. From High Speed Flight A few of the experimental aircraft encountered a new type of behavior known as inertia coupling, a behavior that was not...

ReRead up on what Inertial Coupling is. It’s really interesting reading as they tried to figure out what was going on in the early 1950’s. Speed is an important contributor because the faster you go the faster the roll rate, until you run out of stick force for the WW2 aircraft. It was more...

One thing left out in the discussion is the effect on inertia coupling by the radiator placement on both aircraft. The Fw-190D, with the radiator out front (causing the nose extension) plus the rear fuselage plug adds to inertia coupling. The P-51’s layout with the radiator below the wing and...

DATCOM shows for the A6M5 about 57dps at 300mph IAS at SL. The NACA data shows about 42+ dps for the same speed at 10,000ft.

Roskam has a data list for several aircraft that you can compare against. The DATCOM manual compares the quality of each computed stability derivative. Most fall in the instrument noise from flight test. A couple derivatives have larger margins. For example control force has a 30% margin. And...

JSBSim: Open Source Flight Dynamics Model in C++ It's at least an order of magnitude above any of the current retail FM's. It's structured right and flexable/adaptable. Necessary items for WW2 flight modeling.

My own theory is the slats were more an an anti-spin device since they don't increase the lift until you are at a high Alpha. Don't forget at the AoA where the slat is working the center wing is stalled and not producing a lot of lift. Of course exceed this and you get a violent spin entry...

Looks like the big advantage of the Fw190 over the Bf109 is a lighter stick force giving it the ability to pull more g's at high speed. The Fw190 actually has a turn advantage over most fighters above the high 200's mph. A big question is did the German pilots have some type of g-suit to...

At 3g DATCOM is listing at max AoA at SL Hurricane Mk1 (7691lbs) Speed = 162mph Rate = 21.9dps Radius = 621ft Bf-109E-4T (5851lbs) Speed = 164mph Rate = 21.6dps Radius = 635ft Note the radius varies with speed generally reducing with higher speeds assuming the pilot was strong...

Don't forget the CFS3 flight equations are far superior to the CFS2 FM which is far superior to the CFS1 FM. But, all are a blast to fly. Unfortunately, as many suspected, the IL-2 FM's from testing, are very poor and there is a bias towards certain aircraft.

One thing that is left out in these discussions is stick force. We just did a full computer analysis and the results were surprising. If you leave stick force out, the Spitfire is far superior. When you factor in stick force it has an equalizing effect bringing the performance of different...