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RIQ > T-6A Aerodynamics 101 > Flashcards

T-6A Aerodynamics 101 Flashcards

1
Q

Vector Definition

A

A quantity that represents magnitude and direction. It is commonly used to represent displacement, velocity, acceleration, and force.

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2
Q

Velocity Definition

A

Is the speed and direction of a body’s motion (the rate and change of position)

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3
Q

Acceleration Definition

A

Is the rate of a body’s change of velocity

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4
Q

Force definition

A

Is a push or pull exerted on a body

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5
Q

Mass (m) definition

A

The quantity of molecular material that comprised an object

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6
Q

Volume (v) defenition

A

The amount of space occupied by an object

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7
Q

Density (p) definition

A

The mass per unit of volume

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8
Q

Work (w) Definition

A

When a force acts upon a body and moves it

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9
Q

Power (P) definition

A

The rate of doing work or work done per unit of time

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10
Q

Horsepower definition

A

A unit of measurement used to express the amount of power being produced

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11
Q

Weight (W) Definition

A

Is the force with which a mass is attracted toward the center of the Earth by gravity

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12
Q

Force (F) definition

A

Mass x Acceleration

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13
Q

Moment Definition

A

What is created when a force is applied at some distance from an axis or fulcrum, producing rotation about that point. (moment=force x distance(d))

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14
Q

Energy Definition

A

A scalar measure of a body’s capacity to do work

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15
Q

What are the 2 forms of energy

A 
Potential Energy (P.E.)
Kinetic Energy (K.E.)
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16
Q

Total Energy (T.E.) Definition

A

The sum of potential energy and kinetic energy

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17
Q

Potential Energy definition

A

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

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18
Q

Kinetic energy definition

A

The ability of a body to do work because it is in motion

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19
Q

Define Inertia

A

The tendency for a body to remain at rest or in motion

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20
Q

Equilibrium definition

A

The lack of acceleration in any direction

21
Q

Newtons law of Equilibrium

A

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

22
Q

Ambient Static Pressure

A

A measurement of the weight of an air column over a specific area

23
Q

Air Density

A

The total mass of air particles for a given volume

24
Q

Temperature

A

Measure of the average kinetic energy of the air particles.

Temp decreases 2

25
Q

Temperature

A

The measure of the average kinetic energy of the air particles.
Temp decreases 2ºC for every 1000’ (Standard Lapse Rate)

26
Q

Static Pressure (Ps)

A

The force that molecules of air exert on each other my their random movement.

27
Q

Dynamic Pressure (Pd)

A

A measure of impact pressure of a large group of air molecules moving together

28
Q

Total Pressure (Pt)

A

The sum of static and dynamic pressure

29
Q

True Altitude Definition

A

The actual height above mean sea level

30
Q

Pressure Altitude

A

A height measured above a standard datum plane

31
Q

Density Altitude (DA)

A

Pressure altitude corrected for temp. deviations from the ‘standard atmosphere’

32
Q

True Airspeed (TAS)

A

The actual airspeed at which an aircraft moves through an air mass

33
Q

Groundspeed (GS)

A

The speed at which an aircraft moves relative to the ground. True airspeed corrected for winds

34
Q

Indicated Airspeed (IAS)

A

The speed that the pilot reads off the indicator

35
Q

What happens to TAS when IAS remains at a constant

A

TAS increases approx. 3 knots for each 1,000’ increase in altitude

36
Q

Calibrated Airspeed (CAS)

A

Indicated airspeed corrected for either indicator error or for minor sensing errors caused by the location of the pitot-static system on an airplane

37
Q

Equivalent Airspeed (EAS)

A

Calibrated airspeed corrected for errors caused by compressibility effects

38
Q

What is an airfoil

A

A streamlined shape designed to produce lift as it moves through the air

39
Q

Mean Camber Line (MCL)

A

The line drawn from the leading edge to the trailing edge, halfway between the upper and lower half of the airfoil

40
Q

Chordline

A

An infinitely long straight line drawn through the leading and trailing edges of the airfoil

41
Q

Root Chord vs. Tip Chord vs. Average Chord

A

The root chord is at the wing root, and the tip chord is the chord measured at the wingtip. Average chord is the average of all chords from the wing root to the wingtip.

42
Q

Spanwise flow

A

The air that travels along the span of the wing, parallel to the leading edge, from root to tip (Opposite of chordwise flow)

43
Q

Pitch attitude

A

Defined as the angle between the longitudinal axis of an airplane and the horizon

44
Q

What is a flightpath

A

The apparent movement through an airmass

45
Q

Relative wind Definition

A

The apparent motion of the air with respect to the motion of the aircraft.

46
Q

Angle of incidence

A

The angle between the airplane’s longitudinal axis and the chordline of its wing

47
Q

Center of gravity

A

The point at which all weight is considered to be concentrated

48
Q

Aerodynamic center

A

The center of lift

RIQ (20 decks)

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