Questions on Latreral Stability

Question 1

For a swept wing aircraft lateral static stability remains the same but lateral dynamic stability decreases with increase in altitude.

Q.1. With a swept wing aircraft, with an increase in altitude, which of the following statements about lateral stability is correct?

A) Static lateral stability increases, dynamic lateral stability increases
B) Static lateral stability remains the same, dynamic lateral stability decreases
C) Static lateral stability decreases, dynamic lateral stability increases
D) Static lateral stability increases, dynamic lateral stability decreases

.

Answer 1

Option B marked Correct

Question 2

Q.2. Considering the lateral stability of a swept wing airraft, at high flight levels the static lateral stability will be ___ and the dynamic lateral stability will be ___

A) greater; greater
B) the same; less
C) less; greater
D) the same; greater

Answer 2

Option B marked Correct.

Question 3

When considering the effect of a swept wing on stability with an increase in altitude, which of the following is correct?

A) increased static lateral stability/decreased dynamic lateral stability
B) decreased static lateral stability/decreased dynamic lateral stability
C) same static lateral stability/reduced dynamic lateral stability
D) increased static lateral stability/same dynamic lateral stability

Answer 3

Option C marked Correct.

Question 4

Q.4. With increasing altitude and constant IAS the static lateral stability (1) and the dynamic lateral/directional stability (2) of an aeroplane with swept-back wing will:

A) (1) increase; (2) increase
B) (1) increase; (2) decrease
C) (1) decrease; (2) decrease
D) (1) decrease; (2) increase

Answer 4

Option B marked correct

According to the first 3 questions - Lateral Static Stability remains the Same whereas according to the last Q.4. Lateral Static Stability Increases.

Answer to Q.4. does not seem to be correct but since there is no other option, just tick it in the exam till something is sorted out.