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Spinner Question

Aircraft Requests Discuss Spinner Question in the Aviation forums; If you look close, you'll see that the hub blades have zero pitch. They drag back when the prop ...


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Old 12-21-2004, 06:59 AM   #16
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If you look close, you'll see that the hub blades have zero pitch. They drag back when the prop turns, activating the above-mentioned cam arrangement and coarsening the pitch of the prop. Many early constant-speed props used similar setups.
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Old 12-21-2004, 07:16 AM   #17
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Quote:
Originally Posted by wmaxt
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Originally Posted by R Pope
That " fan-like thingie" is part of the variable-pitch mechanism for the propellers. It uses air resistance to control the RPM by changing the pitch of the blades.
That may be true - for some reason I was thinking about the one on the nose of the 163 rocket plane.
Isnt that a small propellor though?
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Old 12-21-2004, 04:46 PM   #18
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Originally Posted by wmaxt
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Originally Posted by R Pope
That " fan-like thingie" is part of the variable-pitch mechanism for the propellers. It uses air resistance to control the RPM by changing the pitch of the blades.
That may be true - for some reason I was thinking about the one on the nose of the 163 rocket plane.
Isnt that a small propellor though?
Yup, many of the early pitch adjusters were just counter weights on the hub. The P-38 had Curtis electric prop controls, they were a problem early on (runaways and flat pitch when an engine was out - not good) until a second generator was installed.
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Old 12-28-2004, 04:27 AM   #19
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Quote:
Originally Posted by R Pope
That " fan-like thingie" is part of the variable-pitch mechanism for the propellers. It uses air resistance to control the RPM by changing the pitch of the blades.
one oter thing why he's right, why would anyone put the generator in such a "unsave" position (u know, where it depends on the wind and stuff) while you can connect it directly to the engine, so you can be shure its always turning.
and the me 163 only has that generator in the nose, cuz i has no engine, at least none with turning parts
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Old 12-28-2004, 06:09 AM   #20
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You are both right....on the FW 189 you see the drive of the variable-blade-pitch-mechanism and on the Me 163 you see the propeller of the electrical power generator !
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