Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

EK 2023 > POF KAP 1 > Flashcards

POF KAP 1 Flashcards

1
Q

When an aircraft is moving, there are four main forces acting upon it, which?

A

Weight
Lift
Thrust
Drag

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Unit for Mass

A

Kilogram (kg)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Mass definition

A

The quantity of matter in a body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Unit for Force

A

Newton (N)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Unit of Weight

A

Newton (N) - the force due to gravity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

F =

A

mass * acceleration due to gravity (m*g)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the value of acceleration due to gravity ?

A

9,81 newtons or 9,81 m/s^2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Definition of centre of gravity

A

The point which the weight of an aircraft acts.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Unit Work

A

Joule (J)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Definition Work

A

A force is said to do work on a body, when it moves the body in the direction in which the force is acting.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Work =

A

Force * Distance (through which the force is applied)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Find F
The mass of a B737 is 60000 kg

A

F = mg
F= 600009,81
F= 588600 N

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Find Work
A force of 10N moves a body 2m along its line of action.

A

Work = Force * Distance
Work = 10N *2m
Work = 20 Nm or J

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Nm is the same as?

A

Joule (J)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Unit for Power

A

Watt (W)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Definition Power

A

The time taken to do work

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Power =

A

Force (N) * Distance (m) / Time (s)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Joules per second is the same as?

A

Watt (W)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Find Power
If a force of 10N moves a mass 2m in 5 seconds

A

Power = Force (N) * Distance (m) / Time (s)
Power = (10*2)/5
Power = 4 joules per second or Watt

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Density is??

A

The “thickness” of air

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

A given mass flow will generate the required lift force, but a decrease in air density will reduce the mass flow.

How is the mass flow maintained?

A

To maintain the mass flow, the speed of the aircraft through the air must be increased.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Definition of Density

A

Mass per unit volume (kg/m^3)

The number of air particles in a given space

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

ISA

A

International standard atmosphere (ICAO)

15 degrees
1013,25 hPa
1,225 kg/m^3

24
Q

Unit for Energi

A

Joule (J)

25
Q

Kinetic energy formula

A

KE = 1/2m *V^2

Hence more speed = more kinetic energy

26
Q

Newtons first law

A

A body will remain at rest or in uniform motion in a straight line unless acted on by an external force

‘To move a stationary object or to make a moving object change its direction, a force must be applied’

27
Q

Newtons second law

A

The acceleration of a body from state of rest, or uniform motion in a straight line, is proportional to the applied force and inversely proportional to the mass.

28
Q

Unit for Velocity

A

m/s

29
Q

Definition for Velocity

A

Rate of change of displacement

30
Q

Unit Acceleration

A

m/s^2
Rate of chance of velocity

31
Q

Acceleration formula

A

Acceleration = Force/Mass

32
Q

Unit Momentum

A

kg-m/s (mass*velocity)
The quantity of motion possessed by a body

33
Q

Newtons third law

A

Every action has an equal opposite reaction.

34
Q

Definition Aerofoil

A

A body with a surface that provides the most favourable ratio between lift and drag in flight.

35
Q

Definition Attitude

A

The nose up/down orientation of an aircraft relative to the horizon.

36
Q

Definition Angle of attack (AOA)

A

The angle between the chord line and the relative wind

37
Q

Definition Load factor

A

The ratio of the weight of an aircraft to the load imposed by lift.

Load factor = Lift/Weight

38
Q

Mach number

A

The ratio of the True airspeed to the speed of sound in the surrounding medium.

39
Q

What is Oscillation?

A

A vibration

40
Q

Definition Relative airflow

A

The direction of airflow produced by the aircraft moving through the air.

41
Q

True airspeed (TAS or V)

A

The speed at which the aircraft is travelling through the air.

42
Q

Definition Velocity

A

Speed with direction

43
Q

Definition Wake

A

The region of air behind an aircraft in which the total pressure has been changed by the presence of the aircraft.

44
Q

Definition Wing loading

A

Ratio of aircraft weight to wing area

Wing loading = Aircraft/Wing area

45
Q

An aircrafts mass is a result of?

A

How much matter it contains

46
Q

The unit of mass is ….

A

kg

47
Q

The definition of a force is…

A

A push or pull

48
Q

The unit of force is …

A

Newton

49
Q

About which point does an aircraft rotate?

A

The centre of gravity

50
Q

If a force is applied to a mass and the mass does not move…

A

No work is done

51
Q

The unit of work is …

A

Joule

52
Q

The unit of power is …

A

Watt

53
Q

Kinetic energy is ?

A

The energy a mass possesses because of its motion.

54
Q

The definition of velocity is ?

A

The rate of change of displacement

55
Q

The definition of momentum is ?

A

The quantity of motion possessed by a body

EK 2023 (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions