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30 Cards in this Set
- Front
- Back
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The primary source of lift on an airfoil is created by a differential in
A. temperature. B. pressure. C. reaction. |
pressure
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The statement, “the internal pressure of a fluid decreases at points where the speed of the fluid increases” is a part of
A. Bernoulli’s Principle. B. Newton’s Law of Motion. C. Hindenberg’s Theory. |
Bernoulli’s Principle
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What is created when an airfoil is moved through the air?
A. Drag B. Lift C. Relative wind |
Lift
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Which two movements are controlled by the control yoke?
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Roll and pitch
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Which of the following is a primary control surface?
A. Variable-pitch propeller B. Flap C. Rudder |
Rudder
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The extension of flaps causes an increase in
A. stall speed B. airspeed. C. drag. |
drag
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The internal pressure of a fluid decreases at points where the speed of the fluid increases” is a part of
A. Einstein’s Theory. B. Bernoulli’s Principle. C. Newton’s Law. D. Federal Aviation Regulations (FARs). |
Bernoulli’s Principle
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When air is forced to travel at a faster speed across the top of a wing versus the bottom, this will result in ________ the wing.
A. lower pressure above B. lower pressure below C. higher pressure above D. atmospheric pressure above |
lower pressure above
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Which statement best expresses Newton’s Third Law of Motion?
A. The greater the angle of attack, the greater the lift produced. B. Increased speed of a fluid results in decreased pressure. C. For every action, there is an equal and opposite reaction. D. In straight and level flight, thrust equals drag. |
For every action, there is an equal and opposite reaction
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The three principal airfoils on an aircraft that produce lift are
A. wing, fuselage, and propeller. B. wing, propeller, and vertical tail surfaces. C. wing, propeller, and horizontal tail surfaces. D. wing, vertical, and horizontal tail surfaces. |
wing, propeller, and horizontal tail
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An imaginary straight line drawn from the leading edge to the trailing edge of a cross section of an airfoil is called the
A. chord. B. camber. C. relative wind. D. angle of attack. |
chord
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The direction of the relative wind is determined by the
A. chord line of the wing. B. flight path of the aircraft. C. direction of the prevailing wind. D. angle of attack. |
flight path of the aircraft
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What force in flight counteracts lift?
A. Pressure B. Thrust C. Weight D. Relative wind |
Weight
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What is used to determine the angle of attack?
A. Wing chord and the ground B. Flight path and wing chord C. Flight path and relative wind D. Flight path and upper camber |
Flight path and wing chord
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What are the three factors that affect the density of the air?
A. Temperature, atmospheric pressure, and humidity B. Temperature, atmospheric pressure, and altitude C. Temperature, altitude, and airspeed D. Atmospheric pressure, altitude, and humidity |
Temperature, atmospheric pressure, and humidity
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For an aircraft to maintain a constant airspeed and maintain straight and level flight, what must be in balance?
A. Thrust and drag; weight, and gravity B. Thrust and gravity; lift, and drag C. Thrust and drag; lift and weight D. Lift and drag; thrust and weight |
Thrust and drag; lift and weight
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Which are the primary control surfaces on an airplane?
A. Ailerons, elevator, and flaps B. Elevator, flaps, and trim tabs C. Rudder, ailerons, and elevator D. Flaps, ailerons, and propeller |
Rudder, ailerons, and elevator
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Movement around the vertical axis is controlled by the
A. ailerons. B. rudder. C. elevator. D. flaps. |
rudder
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Movement around the longitudinal axis is called
A. roll. B. yaw. C. crab.Which action would cause a change in pitch? A. Pushing on a rudder pedal B. Turning the control yoke C. Pushing the control yoke D. Adjusting the rudder trim D. pitch. |
roll.
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Which control allows the pilot to relieve manual pressure on the primary controls?
A. Trim tab B. Flaps C. Control yoke D. Elevator |
Pushing the control yoke
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Which control allows the pilot to relieve manual pressure on the primary controls?
A. Trim tab B. Flaps C. Control yoke D. Elevator |
Trim tab
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At approximately what angle of attack will air no longer flow smoothly over the wing’s upper surface?
A. 5-10 B. 10-15 C. 13-18 D. 15-20 |
15-20
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The most hazardous aspect of structural icing is
A. decreases weight. B. increased drag. C. reduced thrust. D. airfoil distortion. |
airfoil distortion
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What type of icing is an aircraft likely to encounter when flying in temperatures above freezing?
A. Pitot tube icing B. Wing icing C. Carburetor icing D. Windshield icing |
Carburetor icing
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Hypoxia is a condition of the body that exists when there is
A. a lack of oxygen in the body tissue. B. a lack of oxygen in the air. C. excessively fast breathing. D. a lack of carbon dioxide in the body. |
a lack of oxygen in the body tissue.
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Hyperventilation is a condition which
A. causes several deaths every year. B. results from anxiety or tension. C. can be corrected by breathing 100 percent oxygen. D. results from excessive carbon dioxide in the body. |
results from anxiety or tension.
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The forces that are acting on a helicopter in flight are lift, thrust, ______, and ______.
A. torque, drag B. weight, gravity C. angle of attack, drag D. weight, drag |
weight, drag
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What term defines a maneuver in which a helicopter is in motionless flight over a reference point, and maintaining a constant heading and altitude?
A. Autorotation B. Blade stall C. Hovering D. Ground effect |
Hovering
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What is the basic purpose of the autorotation maneuver?
A. Emergency landing B. Fuel conservation C. Maintain constant altitude D. Rearward flight |
Emergency landing
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The pitch (angle of attack) of a helicopter rotor blade is controlled by the
A. cyclic. B. throttle. C. collective. D. antitorque pedal |
collective.
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