CHAPTER 1 QUESTIONS AND ANSWERS
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, 3203. (Refer to Figure 1.) The acute angle A is the angle of - ANSWER attack.
3204. The term "angle of attack" is defined as the angle - ANSWER between the wing
chord line and the relative wind.
3204-1. The angle between the chord line of an airfoil and the relative wind is know as
the angle of - ANSWER attack.
3317. The term angle of attack is defined as the angle between the - ANSWER chord
line of the wing and the relative wind.
3201-1. Which statement relates to Bernoulli's principle? - ANSWER Air traveling faster
over the curved upper surface of an airfoil causes lower pressure on the top surface.
3201. The four forces acting on an airplane in flight are - ANSWER lift, weight, thrust,
and drag.
3213. What is the purpose of the rudder on an airplane? - ANSWER To control yaw.
3205. What is the relationship of lift, drag, thrust, and weight, when the airplane is in
straight-and-level flight? - ANSWER Lift equals weight and thrust equals drag.
3202. When are the four forces that act on an airplane in equilibrium? - ANSWER
During unaccelerated flight.
3210. An airplane said to be inherently stable will - ANSWER require less effort to
control.
3211. What determines the longitudinal stability of an airplane? - ANSWER The location
of the CG with respect to the center of lift.
3212. What causes an airplane (except a T-tail) to pitch nosedown when power is
reduced and controls are not adjusted? - ANSWER The downwash on the elevators
from the propeller slipstream is reduced and elevator effectiveness is reduced.
3287. An airplane has been loaded in such a manner that the CG is located aft of the aft
CG limit. One undesirable flight characteristic a pilot might experience with this airplane
would be - ANSWER difficulty in recovering from a stalled condition.