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Old 06-04-2010 | 09:27 AM
  #21  
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DarZeelon
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From: Rosh-HaAyin, ISRAEL
Default RE: Engine Torque Problem

ORIGINAL: LNEWQBAN


It seems to me that the right roll was produced by three simultaneous things:
1) Sudden power up (the last second increase in rpm can be seen in the video).
2) Quick full elevator up.
3) Right wing tip hooked under the tail of the other plane (view of which may have motivated the reaction of the pilot).

Left roll was induced by 1, due to sudden engine torque.
Right yaw was produced by 1 and 2 combined, due to propeller being tilted backwards. This is called Gyroscopic Precession, and it can overpower the P-factor for big and heavy propellers.
Lnewqban,


The plane rolled to its RIGHT, prior to crashing... Torque; had it any effect, would cause the plane to roll to the left!

Please see photo of the plane [link=http://media.photobucket.com/image/allison%20mustang/bomarc_99/P-51%20SIG/1a35323u.jpg]here[/link] and below.

Torque has virtually no effect. Please re-read what I wrote in post #6.

Gyroscopic precession, due to the large, heavy propeller; would cause some yaw effect, upon application of the elevator and some pitching effect; upon application of the rudder.
But the effects would not cause the roll to the right, which was the ultimate cause of the crash...

There is nothing to support your third claim, although the prop hitting the other plane's left horizontal stabilizer and elevator, could have caused the nose of the doomed plane to rise...
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