Correct Answer : 34 unit
Explanation : Given, take-off gross weight is W0 = 10000 unit.Now, length is given by,L = a*W0cNow, for jet fighter aircraft a=0.93, c=0.39Hence, length of fuselage is,L = 0.93*100000.39 = 33.76 = 34unit.
Correct Answer : Option (B) : control surface flutter
Explanation : Rapid oscillation of control surface is called control surface flutter. This rapid oscillation can tear off the surface or wing/tail itself. This will induces excessive vibration as well. Effectiveness of control surface is measure of how effectively we can control the aircraft.
Correct Answer : Option (D) : notched aerodynamic balance
Explaination : Above diagram is showing a typical notched aerodynamic balance. It is also called horn aerodynamic balance. We can reduce the force required for deflecting the control surface. However, it is not suitable for high speed aircrafts.
Correct Answer : Option (A) : 2.4m
Explanation : For a typical wing, ailerons are extended from 50% of span to 90% of span.Given, Span of wing b=12m. Since we need to find aileron length at one wing we will divide total wing span by 2.Hence span of starboard wing = 12/2 = 6m.Length of aileron at starboard wing (right wing) = |difference between 50% and 90% of span|= |50% of 6m – 90% of 6m| = |0.5*6-0.9*6| = 2.4m.
