T-6A Aerodynamics 101

Question 1

Vector Definition

Answer 1

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

Question 2

Velocity Definition

Answer 2

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

Question 3

Acceleration Definition

Answer 3

Is the rate of a body’s change of velocity

Question 4

Force definition

Answer 4

Is a push or pull exerted on a body

Question 5

Mass (m) definition

Answer 5

The quantity of molecular material that comprised an object

Question 6

Volume (v) defenition

Answer 6

The amount of space occupied by an object

Question 7

Density (p) definition

Answer 7

The mass per unit of volume

Question 8

Work (w) Definition

Answer 8

When a force acts upon a body and moves it

Question 9

Power (P) definition

Answer 9

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

Question 10

Horsepower definition

Answer 10

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

Question 11

Weight (W) Definition

Answer 11

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

Question 12

Force (F) definition

Answer 12

Mass x Acceleration

Question 13

Moment Definition

Answer 13

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))

Question 14

Energy Definition

Answer 14

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

Question 15

What are the 2 forms of energy

Answer 15

Potential Energy (P.E.)
Kinetic Energy (K.E.)

Question 16

Total Energy (T.E.) Definition

Answer 16

The sum of potential energy and kinetic energy

Question 17

Potential Energy definition

Answer 17

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

Question 18

Kinetic energy definition

Answer 18

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

Question 19

Define Inertia

Answer 19

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

Question 20

Equilibrium definition

Answer 20

The lack of acceleration in any direction

Question 21

Newtons law of Equilibrium

Answer 21

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

Question 22

Ambient Static Pressure

Answer 22

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

Question 23

Air Density

Answer 23

The total mass of air particles for a given volume

Question 24

Temperature

Answer 24

Measure of the average kinetic energy of the air particles.

Temp decreases 2

Question 25

Temperature

Answer 25

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

Question 26

Static Pressure (Ps)

Answer 26

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

Question 27

Dynamic Pressure (Pd)

Answer 27

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

Question 28

Total Pressure (Pt)

Answer 28

The sum of static and dynamic pressure

Question 29

True Altitude Definition

Answer 29

The actual height above mean sea level

Question 30

Pressure Altitude

Answer 30

A height measured above a standard datum plane

Question 31

Density Altitude (DA)

Answer 31

Pressure altitude corrected for temp. deviations from the 'standard atmosphere'

Question 32

True Airspeed (TAS)

Answer 32

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

Question 33

Groundspeed (GS)

Answer 33

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

Question 34

Indicated Airspeed (IAS)

Answer 34

The speed that the pilot reads off the indicator

Question 35

What happens to TAS when IAS remains at a constant

Answer 35

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

Question 36

Calibrated Airspeed (CAS)

Answer 36

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

Question 37

Equivalent Airspeed (EAS)

Answer 37

Calibrated airspeed corrected for errors caused by compressibility effects

Question 38

What is an airfoil

Answer 38

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

Question 39

Mean Camber Line (MCL)

Answer 39

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

Question 40

Chordline

Answer 40

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

Question 41

Root Chord vs. Tip Chord vs. Average Chord

Answer 41

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.

Question 42

Spanwise flow

Answer 42

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

Question 43

Pitch attitude

Answer 43

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

Question 44

What is a flightpath

Answer 44

The apparent movement through an airmass

Question 45

Relative wind Definition

Answer 45

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

Question 46

Angle of incidence

Answer 46

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

Question 47

Center of gravity

Answer 47

The point at which all weight is considered to be concentrated

Question 48

Aerodynamic center

Answer 48

The center of lift