Dumb torque question

[Tilt]

Sitting in the pilots seat the prop of a big radial  (in front of me) is rotating clockwise to my view................

which wing do I have to give lift to, to counter its torque?

[lasersailor184]

If it's spinning clockwise from your view, your plane wants to go counter clockwise.

So trim right a Little bit.  i think.

[Cobra412]

I read something from a spit pilot awhile back when AH2s takeoffs were extremely difficult that helped.  To counter the nose from wanting to come back to the left I had to input right rudder.  At the same time the left wing wanted to dip so I had to input right roll to give the left wing lift.  From what the Spit pilot said this was always needed to take off properly.  AH2 went back to the old slam the throttle bit though which was disappointing.  It was nice to know that in order to get off the deck you actually had to use proper inputs to keep from ground looping it.

[Holden McGroin]

Roll to the right to counter the torque in flight.

Rudder on takeoff is due to 'P' effect.  The downward moving blade of the prop (right side) takes a bigger bite out of the air due to a bigger angle of attack to the airstream, because the centerline of the fuselage is tilted nose up as it sits on the gear.  

The prop disc then gives assymetrical thrust that must be counteracted with right rudder.

[Glasses]

Don't you mean roll left? or use rudder to counter torque?

At least back when I flew the Pa28s and the 172s right rudder on take off and a lil bit of of rudder when making turn to coordinate the turns to for the skid and slip .

[Terror]

Try this thread.  I submitted this a couple years back:

Turning Tendencies

Terror

[flakbait]

A crash-course in takeoff physics/aerodynamics...


P-factor causes uneven thrust from the prop angle not being perfectly perpendicular to the airflow. As the aircraft accelerates forward the bottom of the prop disc impacts the air before the top of the disc, making additional thrust. This causes a slight turn to the left because the prop wash spirals back from the propeller.

Spiral propwash coming back off the prop slaps the left side of the tail, making the aircraft swing hard left.

Torque is a rolling effect caused by power application to the prop wanting to twist the motor the other direction.

Gyroscopic precession is what causes yaw at low airspeeds after takeoff when you pitch up. It's a highly complex thing a physics major would have to explain.


Torque is countered by rolling right in any aircraft with a clockwise rotating propeller. Everything else is countered by applying right rudder.



-----------------------
Flakbait [Delta6]
Delta Six's Flight School
Put the P-61B in Aces High

[gripen]

With some sort of oddball airframe geometry the sliptream effect might be reverse. Say shoulder wing single engined flying boat or something like that.

gripen