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1. You are in level flight and pitch down to begin a descent. The vertical speed is increasing (changing) from 0 ft/min
to 800 ft/min. How are lift and weight related?
Weight is greater than lift
Lift is greater than weight
The horizontal component of lift is less than the horizontal component of weight
Lift and weight are equal: Weight is greater than lift
2. You are in a descent where both airspeed and vertical speed are constant (not changing). How are thrust and drag
(approximately) related?
Thrust is greater than drag
Thrust is less than drag
The horizontal component of drag is greater than the horizontal component of thrust
Thrust is equal to drag: Thrust is equal to drag
3. Which Newtonian law explains why an airplane in cruise flight will remain at the same altitude and airspeed until
thrust, drag, lift, or weight are changed?-
: 1st law
4. Which Newtonian law explains why the vertical speed changes as a result of lift changing?: 2nd law
5. Which Newtonian law explains why air accelerated by a helicopter's rotor causes an equal and opposite reaction
that pushes the helicopter up?: 3rd law 6. Assuming the pilot does not make any thrust or control changes, why does
airspeed increase as an airplane descends?: Because kinetic energy increases as potential energy decreases
, 7. What force causes an airplane to turn when roll and yaw are coordinated?: -
Centripetal force
8. Which statement most accurately describes the compressibility of air?
Air is not compressible
Air is only compressible above M 0.3
Air is only compressible above M 1.0
Air is always compressible: Air is always compressible
9. What assumptions are made when using the continuity equation? (*Choose all that apply*) Flow is incompressible
Flow is inviscid (no friction)
Flow is adiabatic (no heat transfer)
Flow is outside the boundary layer: Flow is inviscid (no friction)
Flow is adiabatic (no heat transfer)
Flow is outside the boundary layer
10. What type of airspeed(s) must be used in the lift and drag equations to calculate the most accurate answer at any
air density less than standard sea level density?: True airspeed
11. What type of airspeed(s) may be used in the lift and drag equations to calculate the most accurate answer at standard
sea level density?: Calibrated, equivalent, or true airspeed
12. What is the purpose of the stagnation point in a pitot tube?: Dynamic pressure is changed into static pressure.
13. What is equivalent airspeed?: The flight speed at standard sea level density that is required to indicate a given
airspeed
14. When are calibrated, equivalent, and true airspeed all equal (KCAS = KEAS =
KTAS)?: At standard sea level density