Podcast
Questions and Answers
What is the term for the percent distance from the neutral point to the center of gravity?
What is the term for the percent distance from the neutral point to the center of gravity?
- Pitching moment coefficient
- Longitudinal stability margin
- Static pitch stability
- Static margin (correct)
What is the typical range of positive static margin for a transport aircraft?
What is the typical range of positive static margin for a transport aircraft?
- 1-5%
- 15-20%
- 10-15%
- 5-10% (correct)
What is the purpose of the computerized flight control system in an aircraft with relaxed static stability?
What is the purpose of the computerized flight control system in an aircraft with relaxed static stability?
- To deflect the elevator and provide artificial stability (correct)
- To reduce trim drag
- To provide artificial instability
- To increase the pitching moment coefficient
What is the effect on the pitching moment derivative when the center of gravity is ahead of the neutral point?
What is the effect on the pitching moment derivative when the center of gravity is ahead of the neutral point?
What is the typical shape of the tailplane on a conventional aircraft?
What is the typical shape of the tailplane on a conventional aircraft?
What is the effect of a negative static margin on an aircraft?
What is the effect of a negative static margin on an aircraft?
What happens to the pitching moment when the downwash decreases the effective angle of attack?
What happens to the pitching moment when the downwash decreases the effective angle of attack?
What is the purpose of upward deflection of the elevators and downward deflection of the trim tab?
What is the purpose of upward deflection of the elevators and downward deflection of the trim tab?
What is the effect of high angles of attack on the CP?
What is the effect of high angles of attack on the CP?
What is the main difference between the longitudinal and lateral-directional analyses?
What is the main difference between the longitudinal and lateral-directional analyses?
What is the sign convention for the yawing moment derivative with respect to Beta?
What is the sign convention for the yawing moment derivative with respect to Beta?
What is the primary function of the vertical tail in relation to the fuselage?
What is the primary function of the vertical tail in relation to the fuselage?
