CFI Pop Quiz #305 - Forward Cyclic

[Chris Burgess]

Too much forward cyclic during flight is probably due to

A) tendency of the nose to pitch up due to transverse flow effect.
B) excessive forward speed at maximum gross weight.
C) critical aft CG

 

[Paul_Zurawski]

Gonna go with (C)

 

[JByrd]

B - I think.

Jim

 

[Aussie_Paul]

Too much forward cyclic during flight is probably due to

A) tendency of the nose to pitch up due to transverse flow effect.
B) excessive forward speed at maximum gross weight.
C) critical aft CG

What is too much??

Aussie Paul.

 

[Paul_Zurawski]

Thats what I thought....my answer is based on too much more than normal, such as in a fixed wing with aft cg...takes more than normal forward yoke.

 

[Chris Burgess]

I won't give you the answer yet, I'll tell you a story. "Once upon a time", I flew a Bensen that had the pushrods and stops incorrectly adjusted. It took off normally and climbed normally also. At about 300 feet, I tried to level off and reduced power. The nose pitched up and the airspeed started to drop off. I pushed forward on the stick to get the nose down but it hit the stops, no forward stick. If the engine had quit, an autorotation would have been impossible. Luckily, this gyro was equipped with the control lock that rotates out of the way. I was able to turn the forward stop out of the way and make a successful descent to land. Learned a lesson that day, Check the travel on the control head to include the stops. The CG was fine, but the control travel was not. An aft CG may....... you tell me.

 

[ventana7]

I'll guess B-- or at least say B can cause this at any wt.

Rob

 

[Aussie_Paul]

Too much forward cyclic during flight is probably due to

A) tendency of the nose to pitch up due to transverse flow effect.
B) excessive forward speed at maximum gross weight.
C) critical aft CG

We need another D) hang test set too nose high.

I hate this "Most correct" answer stuff!!!!

Aussie Paul.

 

[mceagle]

Paul, you have your "D" answer in "C"
"A" - What is "transverse flow effect" in Gyroplanes?
"B" - Excessive forward speed at max gross is more likely to require more aft cyclic.

I will go with "C"

 

[Friendly]

I agree with Tim , I think the key words are "too much" forward cyclic.
Paul if the Hang test were too high wouldn't that be too much weight rear of the normal center of gravity, making it critical aft CG?

 

[birdy]

Too much forward could mean, it's pulln forwards too much, you have to push forwards too much, or the stick position is too far forward.
Which one?

 

[Chris Burgess]

"C", most correct. Too much forward cyclic during flight is probably due to (C) critical aft CG.

"D"efending Paul here, This would have been revealed in a hang test ("dangle angle"). "B" is kind of a "got ya" deal. Max gross weight operations is normal, and if the aircraft passed the hang test within manufactures CG limits, you should not have excessive forward cyclic. Another story: "Once upon a time" I loaded a 5 pound camera out on a five foot arm, up front, beyond the nose of the aircraft. That one made the CG shift way forward. It was flyable but sure felt weird on takeoff. It's not fun taking off with the nose wheel being the last wheel to leave the ground. Oh, and by all means, don't land that way, bad idea!!!