03-21-2018, 12:00 PM
GATE 2018 Aerospace Engineering (AE)Â question paper and answer
1. A jet aircraft is initially flying steady and level at its maximum endurance condition. For the aircraft to fly steady and level, but faster at the same altitude, the pilot should
(A) increase thrust alone.
(B) increase thrust and increase angle of attack.
© increase thrust and reduce angle of attack.
(D) reduce angle of attack alone
2. An airplane requires a longer ground roll to lift-off on hot summer days because
(A) the thrust is directly proportional to free-stream density.
(B) the thrust is directly proportional to weight of the aircraft.
© the lift-off distance is directly proportional to free-stream density.
(D) the runway friction is high on hot summer days.
3. The pitching moment of a positively cambered NACA airfoil about its leading edge at zero-lift angle of attack is
(A) negative.
(B) positive.
© indeterminate
(D) zero
Details on GATE 2018 Aerospace Engineering (AE)Â question paper and answer key can be downloaded from the link attached below
1. A jet aircraft is initially flying steady and level at its maximum endurance condition. For the aircraft to fly steady and level, but faster at the same altitude, the pilot should
(A) increase thrust alone.
(B) increase thrust and increase angle of attack.
© increase thrust and reduce angle of attack.
(D) reduce angle of attack alone
2. An airplane requires a longer ground roll to lift-off on hot summer days because
(A) the thrust is directly proportional to free-stream density.
(B) the thrust is directly proportional to weight of the aircraft.
© the lift-off distance is directly proportional to free-stream density.
(D) the runway friction is high on hot summer days.
3. The pitching moment of a positively cambered NACA airfoil about its leading edge at zero-lift angle of attack is
(A) negative.
(B) positive.
© indeterminate
(D) zero
Details on GATE 2018 Aerospace Engineering (AE)Â question paper and answer key can be downloaded from the link attached below