Nomadd
26th Nov 2003, 11:44
Never have worked on helicoptors, mostly do fixed wing aeroplanes.Heli aerodynamics seems more complex compared to aerplanes. have been struggling with these two questions especially the frist one.
Appreciate any comments not neccassarily answers, as the possibly first question may be incomplete.
Second question my impression is as CG (weight and drag) points are below the lift and thrust vector point of operation with increase in speed as the parasitic drag increases and dominates the other drag forces, helicoptor will have pitch down tendency due to parasitic drag
If stability lock switch is turned off
A. Returns all trim commands to normal
B. Returns cyclic stick to centre and keeps a/c at same attitude and speed
C. Returns cyclic stick to centre and keeps a/c at same attitude
1. What affect does parasitic drag have on the attitude of a helicopter in flight.
a. Helicopter pitches nose up
b. Helicopter pitches nose down
c. No effect
Thanks
Nomadd
Appreciate any comments not neccassarily answers, as the possibly first question may be incomplete.
Second question my impression is as CG (weight and drag) points are below the lift and thrust vector point of operation with increase in speed as the parasitic drag increases and dominates the other drag forces, helicoptor will have pitch down tendency due to parasitic drag
If stability lock switch is turned off
A. Returns all trim commands to normal
B. Returns cyclic stick to centre and keeps a/c at same attitude and speed
C. Returns cyclic stick to centre and keeps a/c at same attitude
1. What affect does parasitic drag have on the attitude of a helicopter in flight.
a. Helicopter pitches nose up
b. Helicopter pitches nose down
c. No effect
Thanks
Nomadd