Basic Theory Flashcards

1
Q

What does this formula represent?

_____ = Mass/Volume

A

Density

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2
Q

What is done when a force acts upon a body and moves it?

A

Work

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3
Q

Which of Newton’s Laws state that “a body at rest tends to remain at rest and a body in motion tends to remain in motion … unless acted upon by some unbalanced force?”

A

The Law of Equilibrium

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4
Q

The measurement of the average kinetic energy of air particles is called what?

A

Temperature

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5
Q

True or false: Dynamic pressure is the measurement of force that molecules exert on each other in a still fluid

A

False

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6
Q

A higher than standard pressure day will cause what?

A

Increased takeoff roll

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7
Q

True or false: Groundspeed is indicated airspeed corrected for winds

A

False

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8
Q

True airspeed must do what as you climb in altitude for a constant indicated airspeed?

A

Increase

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9
Q

The apparent motion of the air with respect to the motion of the aircraft is defined as what?

A

Relative wind

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10
Q

The angle of attack is defined as what?

A

The angle between the relative wind and the chordline of the airfoil

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11
Q

What is the benefit of a tapered wing?

A

Structural stiffness

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12
Q

Having a CG that is too far aft causes the aircraft to exhibit what behavior?

A

A tendency to pitch up into a stall

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13
Q

What is the point from which movements in roll, pitch, and yaw axes are measured?

A

Center of gravity

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14
Q

The axis about which the airplane’s nose moves up and down is the ____?

A

Lateral or pitch axis

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15
Q

What is moment?

A

Created when a force is applied at some distance from an axis or fulcrum, producing rotation about that point

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16
Q

Mass per unit of volume defines what?

A

Density

17
Q

What is potential energy?

A

The ability of a body to do work due to its position or state of being

18
Q

The Law of Interaction states what?

A

For every action there is an equal and opposite reaction

19
Q

True airspeed will be what in relation to indicated airspeed at 10,000 feet altitude?

A

Greater than

20
Q

The chordline of an airfoil is defined as what?

A

A measure of a wing along the chordline, from the leading edge to the trailing edge

21
Q

Air density is ____ at 10,000 compared to 5,000 feet

A

Lower

22
Q

What is the altimeter setting of a standard day where pressure altitude matches true altitude? (in-Hg)

A

29.92

23
Q

The center of gravity is the point at which _____.

A

All weight is concentrated

24
Q

Which axis does the aircraft nose move left or right about the center of gravity?

A

Yaw