1: (94) Airplanes and Aerodynamics Flashcards
In theory, if the airspeed of an aircraft is cut in half while in level flight, parasite drag will become…
one-forth as much
Which is true regarding the forces acting on an aircraft in a steady-state descent? The sum of all…
forward forces is equal to the sum of all rearward forces.
Which factor below is the best indication of positive or negative Gs in an aircraft?
Change in how heavy you feel in your seat.
One of the main functions of flaps during the approach and landing is to…
provide the same amount of lift at a slower airspeed.
If an airplane is loaded to the rear of its CG range, it will tend to be unstable about its…
lateral axis
How many feet in statute mile ?
5280
Acceleration past critical Mach speed may cause compressibility issues such as…
drag increases
What is the critical Mach number ?
highest flight speed possible without supersonic flow.
Lift on a wing is most properly defined as the…
force acting perpendicular to the relative wind.
The ratio of an airplane’s true airspeed to the speed of sound in the same atmospheric conditions is…
Mach number
When a pilot increases the angle of attack on a symmetrical airfoil, the center of pressure will…
be unchanged
At the airspeed represented by point A (minimum total drag curve), in steady flight, the airplane will…
have its maximum L/D ratio
Which is true regarding the use of flaps during level turns?
The raising of the flaps will increase stall speed.
Stall speed is affected by…
weight, load factor, and power.
As airspeed decreases in level flight below that speed for maximum lift/drag ratio, total drag of an airplane…
increases because of increased induced drag.
