Airplanes and Aerodynamics Flashcards

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1
Q

3 Primary Flight Controls

A

Aileron, Elevator, Rudder

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2
Q

Ailerons control

A

roll about the longitudinal axis

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3
Q

Elevators control

A

pitch about the lateral axis

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4
Q

Stabilator

A

one-piece horizontal stab and elevator that pivots from a central hinge point

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5
Q

Canard

A

horizontal stab located forward of the main wing. It has elevators to control pitch

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6
Q

Rudders control

A

yaw about a vertical axis

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7
Q

Secondary flight control surfaces

A

flaps, leading edge devices, spoilers, and trim systems

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8
Q

Flaps

A

used to increase an angle of descent without increasing airspeed.

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9
Q

Spoilers

A

used to increase drag and reduce lift

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10
Q

Trim Systems

A

used to relieve the pilot of having to put constant pressure on flight controls

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11
Q

4 Aerodynamic Forces

A

Lift, Weight, Drag, Thrust

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12
Q

Unaccelerated Flight

A

When the 4 aerodynamic forces are in equilibrium

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13
Q

Bernoullis Principle

A

the internal pressure of a fluid decreases at points where the speed of fluid increases

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14
Q

Angle of Attack

A

The angle between the chord line and the direction of the relative wind

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15
Q

Critical Angle of Attack

A

the angle of attack at which a wing stalls regardless of weight, loading, speed, etc.

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16
Q

Spin

A

one wing less stalled than the other. aircraft must always be stalled first to enter a spin.

17
Q

Frost

A

formed when the temp of the surface is below the dew point and the dew point is below freezing

18
Q

Effect of Frost on wings

A

disrupts smooth airflow decreasing lift and increasing drag

19
Q

Ground Effect

A

interference of the ground with airflow patterns about the wing

20
Q

4 left turning tendencies

A

P-Factor, Spiraling Slipstream, gyroscopic procession, torque

21
Q

Load Factor

A

Additional weight carried by the wings due to centrifugal force

22
Q

Vs

A

Stall Speed

23
Q

Va

A

Maneuvering Speed

24
Q

Vno

A

Maximum Cruise

25
Q

Vne

A

Never Exceed Speed