Exam

Question 1

Definition of a straight line representation of a velocity

Answer 1

Length is proportional to speed using a fixed scale.

Direction is determined

Question 2

Definition of Energy of a body

Answer 2

Capacity to do work

Question 3

Kinetic energy definition

Answer 3

The energy a body possesses by virtue of its motion proportional to velocity KE = 1/2mv^2

Question 4

Potential energy definition

Answer 4

The energy a body possesses by virtue of its position in a Force field = energy stored

PE =mgh

Question 5

Gas definition

Answer 5

A group of molecules that aren’t bonded

Question 6

Gas density

Answer 6

The measure of the number of particles per volume

Question 7

Density of gas is a function of :

Answer 7

Temperature

Pressure

Question 8

Camber definition

Answer 8

Max distance between the chord line and the mean camber line
Measured perpendicular to the chord line
%

Question 9

Chord line definition

Answer 9

A straight line joining the centres of curvature of the leading edge and trailing edges

Question 10

Relative air flow definition

Answer 10

The relative direction and speed of the air before it is influenced by the presence of the aircraft

Question 11

Stall definition

Answer 11

AoA exceeds critical angle

Decrease in lift due to decreased pressure on top of wing

Question 12

Thrust definition

Answer 12

Engine generates power and the propellor generates thrust by accelerating a mass of air

Question 13

Temperature increases

Answer 13

Decrease density of gas

Increase kinetic energy

Question 14

As pressure increases

Answer 14

Increase density of gas

Question 15

What is static stability

Answer 15

Immediate reaction of a body disturbed by an external force

Question 16

What is dynamic stability

Answer 16

Subsequent reaction of a body disturbed by an external force

Question 17

Symptoms of the stall

Answer 17

High attitude 
Reducing airspeed 
Stall warning 
Less effective controls 
Buffet 
Stall followed by uncommanded pitch down

Question 18

Stall recovery is

Answer 18

Reduce AoA

Increase velocity

Question 19

What are two types of drag

Answer 19

Zero lift drag

Lift dependent / induced drag

Question 20

Specific fuel consumption definition

Answer 20

Amount of fuel burnt divided by the amount of fuel produced

Jets - SFC = FF/Thrust
Turboprop - SFC = FF/SHP

Question 21

TOR(R)

Answer 21

Take off run required

Length of ground roll aircraft requires to accelerate from a standing start to speed to fly

Question 22

TORA

Answer 22

Take off runway available

Length of runway available for the ground run of an aircraft taking off

Question 23

TOD(R)

Answer 23

Take off distance required

Distance required for an aircraft to accelerate from a standing start and climb to a screen height

Question 24

TODA

Answer 24

Take off distance available

Distance available for an aircraft to achieve screen height
Includes TORA + stop way + clear way

Question 25

ASDA

Answer 25

Accelerate stop distance available TORA + any stopway

Question 26

What factors increase take off distance

Answer 26

``` Weight Pressure altitude Tailwind Temperature Surface Slope ```

Question 27

Climb gradient

Answer 27

Distance travelled vertically divided by distance covered across the ground

Question 28

What factors need to be considered when calculating landing performance for an aircraft

Answer 28

``` Aircraft weight Airfield altitude Air temperature Runway surface conditions Runway slope 50% HW 150% TW ```

Question 29

Effects of engine failure

Answer 29

``` Safety implications Alters specific air range and specific ground range Decrease airspeed Decrease operating ceiling Decrease performance ```

Question 30

Asymmetric flight

Answer 30

50% power lost 80% performance lost Steady flight achieved: - engine shut down and feather - gear and flap retract - 5 degree bank toward live engine - limitation of bank angle

Question 31

Ice formation on aerofoil surfaces and fuselage

Answer 31

Increase thrust required and stall speed

Question 32

Frost on wings and tail surface

Answer 32

Take off run and stalling speed increase

Question 33

Not clearing frost from wings before flight

Answer 33

Indicated stalling speed increases

Question 34

Accumulating clear ice on aeroplane in flight

Answer 34

Increase stalling speed

Question 35

Rime ice hazard

Answer 35

May block pitot tube