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WorksheetsPrinciples of Flight
Total questions: 15
Worksheet time: 12mins
The control wheel or yoke is used to position the
rudder and elevator
rudder and ailerons
ailerons and elevator
ailerons, rudder, and elevator
The four forces acting on an airplane during flight are
(a)
The force that acts downward toward the center of the earth is called
(a)
The force that propels the airplane through the air is called
(a)
When the four forces are in equilibrium during straight-and-level, unaccelerated flight, lift is equal to and opposite ____________, and thrust is equal to and opposite ______________.
(a)
According to Bernoulli's Principle, when the velocity of the fluid increases, the pressure (a) (increases, decreases).
During straight-and-level, unaccelerated flight, air pressure below the wing is (a) (higher, lower) than air pressure above the wing.
The curved shape of a wing's upper surface tends to (a) (accelerate, decelerate) airflow over it.
The angle between the wing chord line and the direction of the relative wind is called the
angle of attack
angle of incidence
descent angle
flight path angle
If the angle of attack is increased beyond the point of maximum lift, the wing (a) .
If angle of attack and other factors remain constant, increasing airspeed from 75 to 150 knots will increase lift (a) times.
An aircraft wing is designed to produce lift resulting from
positive air pressure below and above the wing's surface
negative air pressure below the wing's surface and positive air pressure above the wing's surface
positive air pressure below the wing's surface and negative air pressure above the wing's surface
negative air pressure below and above the wing's surface.
If the angle of attack and other factors remain constant and the airspeed is doubled, the lift produced at the higher speed will be
the same as at the lower speed
two times greater than at the lower speed
three times greater than at the lower airspeed
four times greater than at the lower speed
In steady-state flight, the sum of the opposing forces acting on an airplane is equal to
the total weight of the airplane
the total weight of the airplane plus the total drag
zero
the thrust plus total lift
The primary purpose of wing spoilers is
change the camber or curvature of the wing
decrease landing speed
decrease the lift of the wing
decrease the drag
