Flashcards in #1 Deck (58)

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1

## Define Speed

### The rate at which an object moves.

2

## Define Velocity

### The speed of an object in a specified direction.

3

## Is Speed a Scalar qualitiy?

### Yes.

4

## Describe Vectors

### Can be dragrammatically summed to find a result

5

## Define Force

### Has a magnitude and direction

6

## Define Newton's First Law

### An object in space that is travelling at a constant speed will remain constant unless an external force is applied.

7

## Define Newton's Second Law

### If a force is applied to an object, the object will accelerate at a rate that is proportional to its mess and the force applied (F = ma).

8

## Define Newton's Third Law

### For every action, there is an equal and opposite reaction.

9

## Define Energy

### An objects capacity to do work

10

## List the two types of energy

### Kinetic and Potential

11

## Define Kinetic Energy

### The energy a body possess by virtue of it's motion

12

## Define Potential Energy

### The energy a body possess by virtue of its position in a force field

13

## Define Gas

### A group of molecules which are not bonded to each other

14

## Define Gas Density

### The quantity of particles in a unit of volume

15

## What is the density of gas a function of?

### Temperature and Pressure

16

## List the four forces acting on an aircraft.

### Lift, Weight, Thrust and Drag

17

## Define Lift

### The component of the total reaction which is perpendicular to the flight path of relative air flow.

18

## Define Weight

### The gravitational attraction to the Earth

19

## Define Thrust

### The propulsive force from a jet or propeller

20

## Define Drag

### The component of the total reaction that is parallel to the flight path

21

## Define the Chord Line

### A straight line joining the centres of curvature of the leading and trailling edges

22

## Define Camber

### The maximum distance between the mean camber line and the chord line, expressed as a percentage

23

## Define Relative Air Flow

### Oncoming wind

24

## Define the Angle of Attack (AoA)

### The angle difference between the chord line and relative air flow

25

## Lift Formula

### L = Co-efficient of Lift × 1/2 × Air Pressure (Rho [P]) × Velocity^2 × Surface of the wing

26

## What is Lift Dependent Drag?

### Induced drag through lift

27

## Define Static stability

### The initial reaction of an object after a force has been applied

28

## Define Dynamic stability

### The subsequent reaction of an object after a force has been applied

29

## Define Stall

### When the aircrafts Angle of Attack is greater than its critical angle (16 degrees)

30