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JAXAshby
 
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Default Angle of prop shaft - theoretical question.

gene, you are one horse**** pilot, if you are any pilot at all, for not being
able to tell the difference between conventional gear and trikes.

Let me inform you a tad. when the aircraft is rolling with the tail down, the
angle of attack one side of the prop circle is greater than on the other side,
because of the forward movement of the craft. The side of the prop with great
a of a developes more thrust and pulls the aircraft forward faster than the
other side of the prop. than means the aircraft pulls to one side. This is
often (erroneously) referred to a P-Torque, because it feels like the engine is
torqueing the aircraft to the side. In fact, it is P-Thrust, or asymetrical
thrust that is causing the aircraft to veer.

be carefull, gene. Remember what the FAA taught you, "Safety is no accident".

You need to do some boning up on your pilot skills, gene, or maybe hang up your
googles.

(JAXAshby) wrote:

steve, bone up on "P-torque" or "P-thrust" or more accurately "asymetrical
thrust". It is a common problem for aircraft with "conventional" landing

gear
(meaning two wheels up front and one on the tail), and has been fully
understood since the early days of WWII.


So..... what conundrum of JaxWorld prevents this from affecting
tricycle gear aircraft, as well?? (Sure takes a lot of right rudder
to keep every aircraft, conventional or tricycle, I have flown on the
center line.) You *do* realize, of course, that most of the forces
felt in this regard are from propeller swirl impinging upon the
vertical stabilizer?

And, that said, given the arm of a 16" boat screw vs a 8 foot or
better aircraft propeller, it makes the effect of P-factor minimal, at
best, in a nautical scenario (unless, of course, you would like to
include things like WWII battleship propellers, just to prove the
laboratory experience in deference to real life).
--
23' Grady White, out of Southport, NC.

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