TRUSTED TEST SOLUTIONS!
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"The internal pressure of a fluid decreases at point where the speed of the fluid
increases" is part of what principle
A. Bernoulli's Principle
B. Newton's law of motion
C. Hindenberg's Theory Answer: A. Bernoulli's Principle
What is the primary source of lift? Answer: Bernoulli's Principle
What is the secondary source of lift? Answer: Newton's third law
Describe Newton's third law. Answer: Upward force generated by air striking the
underside of an airfoil and being deflected downward.
What is relative wind? Answer: Direction of airflow produced by object moving through
the air
What direction does relative wind flow? Answer: Parallel with and opposite to direction
of flight
Three main airfoils. Answer: Wing, horizontal stabilizer, prop
What is the chord line? Answer: imaginary line from the leading edge to trailing edge of
the wing.
What are the parts of an airfoil? Answer: Leading edge, Trailing edge, and Chord line
What is angle of attack? Answer: angle between the chord line and relative wind.
Describe camber Answer: Curvature of an airfoil, from leading edge to the trailing edge.
What is the shape or form of a wing viewed form above? Answer: Wing Planform
Four forces affecting flight Answer: Lift, Weight, Trust, Drag
Three properties that affect air density and A/C performance Answer: Temp, Altitude of
elevation, humidity
What is the average surface temp in the U.S. Answer: 59 degrees.
What is the average lapse rate? Answer: 3.5 degrees Fahrenheit (2 degrees C) every
1,000 feet.
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, What air is denser. Warm or cold? Answer: Cold
Lower pressure is associated with what kind of air? Answer: Thin, or less dense air
Does High or Low density altitude indicate thinner air? Answer: High
List some ways that performance is reduce by Higher density altitude, High temp, and
High elevation Answer: Longer takeoff roll, Longer landing roll, Slower climb rate,
Landing speed increased.
Three propeller types Answer: Adjustable, (adjust on ground). Fixed pitch. Controllable,
(auto varied in flight.
Longitudinal axis rotates ______ Answer: Roll
Lateral axis rotates ________ Answer: Pitch
Vertical axis rotates ________ Answer: Yaw
Longitudinal axis controls what? Answer: Angle of bank. Heading.
Lateral axis controls what? Answer: Angle of attack. Altitude.
Vertical axis controls what? Answer: Left to right. Streamlined motion.
Primary control surfaces Answer: Ailerons, Elevator, Rudder
Ailerons controls _____ Answer: Roll
Elevator controls _______ Answer: Pitch
Rudder controls ________ Answer: Yaw
Ailerons are where on the A/C Answer: Outboard trailing edge of the wing. Rotates on
longitudinal axis.
What is adverse yaw? Answer: Tendency of nose of A/C to yaw in opposite direction of
turn. caused by drag of down aileron
Elevator is where on the A/C and what does it control. Answer: Rear of horizontal
stabilizer. Rotates on lateral axis. controls angle of attack.
What is the rudder located on the A/C and what does it control. Answer: Aft of vertical
stabilizer. Rotates on vertical axis. Controls yaw.
What two movements are controlled by the yoke? Answer: Pitch and roll
What are trim tabs? Answer: Lessen manual pressure the pilot must apply to control
surfaces. relieves pressure controls. Manual or electric.
Flaps are located where on a plane? Answer: Inboard on wings trailing edge. Used to
increase lift
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