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.
(C) the lift-off distance is directly proportional to free-stream density.
(D) the runway friction is high on hot summer days.
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.
(C) the lift-off distance is directly proportional to free-stream density.
(D) the runway friction is high on hot summer days.
(A) the thrust is directly proportional to free-stream density.