Q.1
##### Stability about yawing axis is called as __________
• a) directional stability
• b) lateral stability
• c) longitudinal stability
• d) pitching moment stability
Q.2
##### Yawing moment is positive if __________
• a) right wing goes back
• b) right wing comes forward
• c) if nose pitches up
• d) if nose pitches down
Q.3
##### Stability about roll axis is called _____________
• a) lateral stability
• b) directional stability
• c) longitudinal stability
• d) elevator control
Q.4
• a) 0 unit
• b) 12 Nm
• c) 23 unit
• d) 25 N/m
Q.5
##### Which is the minimum requirement for pure directional stability?
• a) Slope of yawing moment curve positive
• b) Negative lift curve slope
• c) Negative pitching moment coefficient curve slope
• d) Positive zero lift pitching moment coefficient
Q.6
##### Rolling moment will influence _______
• a) aircraft lateral stability
• b) longitudinal stability
• c) pitch axis stability
• d) pitching stability only
Q.7
##### Following diagram represents ___________
• a) typical roll stability concept
• b) typical longitudinal stability
• c) lift curve
• d) drag polar
Q.8
• a) 5.2°
• b) 6.89°
• c) 1.2°
• d) 21.3°
Q.9
• a) True
• b) False
Q.10
• a) -4.72°
• b) -5°
• c) 4.7°
• d) 3.18°
Q.11
• a) -2.09°
• b) 3.5°
• c) -4.5°
• d) -4.74°
Q.12
• a) 2.86°
• b) 4.5°
• c) 4.7°
• d) 2.1°
Q.13
• a) 80.151
• b) 90
• c) 10.52
• d) 100.159
Q.14
• a) 1.43
• b) 5.4
• c) 5
• d) 12.32
Q.15
##### Determine the net velocity if sideslip angle is 3.8 degree and [v] = 4.2 unit.
• a) 63.23 unit
• b) 100 unit
• c) 100.23 unit
• d) 102.623 unit