Standard Book, Technical General
Lift: DGCA Technical General questions
Lift is the force a wing makes at right angles to the relative airflow. It depends on air density, the square of true airspeed, wing area and angle of attack, and it comes up often in Technical General.
The 36 questions mix the lift formula with ground effect, density altitude and wake turbulence. Exam sessions have featured 5 of them.
At a constant angle of attack, doubling the speed gives four times the lift, not twice. Leaving ground effect raises induced drag and costs lift at the same angle of attack, so a higher angle is needed to hold the flight path. A wing makes wake vortices whenever it produces lift, and they sink, drift with the wind and can linger after the aircraft has gone.
0 answered·5 free questions·0 right
Question 1 of 5
What wind condition prolongs the hazards of wake turbulence on a landing runway for the longest period of time?
Question 2 of 5
Given: Aircraft A, wingspan 51 m, average chord 4
Question 3 of 5
To avoid the wing tip vortices of a departing jet aeroplane during take-off, the pilot should:
Question 4 of 5
What effect does landing at high altitude airports have on ground speed with comparable conditions relative to temperature, wind and aeroplane weight?
Question 5 of 5
At higher elevation airports the pilot should know that indicated airspeed:
31 more questions in this chapter
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