8.1

Question 1

What letter is speed denoted by?

Answer 1

V

Question 2

What is distance denoted by?

Answer 2

m

Question 3

What is time denoted by?

Answer 3

s

Question 4

What is the mass of one kg defined by?

Answer 4

A piece of platinum alloy at the office of weights and measurement in Paris.

Question 5

What is the mass of 1kg equal to in terms of litres?

Answer 5

1 litre of pure water at temperature of 4 Celsius.

Question 6

What is the formula for speed?

Answer 6

Speed = Distance / Time

Question 7

What is the formula for acceleration?

Answer 7

Acceleration = Change of speed / Time

Question 8

What is acceleration due to gravity denoted by?

Answer 8

g

Question 9

What is the average of acceleration due to gravity?

Answer 9

10 metres per second.

Question 10

What is the second law of Isaac Newton?

Answer 10

Force equals mass multiplied by acceleration.

Force = mass x acceleration

Question 11

What is force and weight measured in?

Answer 11

Newton’s.

Question 12

What is the formula for weight?

Answer 12

Weight = mass x acceleration due to gravity

Question 13

What is the formula for work?

Answer 13

Work = Force x Distance

Question 14

What is work denoted in?

Answer 14

Joule (J)

Question 15

What is the formula for power?

Answer 15

Power = Work / Time

Or

Power = Force x Distance / Time

Question 16

What is power measured in?

Answer 16

Watts or

Newton metres per second

Question 17

What is pressure?

Answer 17

Force acting on a unit of area.

Question 18

What is pressure denoted by?

Answer 18

Pascal (Pa)

Question 19

What is pressure measured in?

Answer 19

Newton’s per square metre.

Question 20

How is static pressure calculated?

Answer 20

Height x Density x Gravity

Question 21

What direction does dynamic pressure flow?

Answer 21

In one direction only in direction of flow.

Question 22

What is dynamic pressure denoted by?

Answer 22

q

Question 23

How is dynamic pressure calculated?

Answer 23

Half the density x Speed squared

Question 24

What is the static pressure for aircraft technical systems denoted by?

Answer 24

bar

Question 25

What is static pressure for aircraft technical systems measured in?

Answer 25

deca-Newton’s per square centimetre

Question 26

What is one bar equal to??

Answer 26

100,000 pascal.

Question 27

What is the formula for pressure?

Answer 27

Pressure = Force / Area

Question 28

What is the formula for speed of sound?

Answer 28

Square root of temperature x 20

Question 29

What is the speed of sound denoted by?

Answer 29

a

Question 30

What must the temperature for speed of sound be expressed in?

Answer 30

Kelvin

Question 31

If the temperature is lower, what would happen to the speed of sound?

Answer 31

The speed of sound is lower.

Question 32

What is the pressure wave created by an aircraft flying at the speed of sound?

Answer 32

Shock wave.

Question 33

Must the aircraft travel less or more than the speed of sound?

Answer 33

Less than

Question 34

What is the Mach number used for?

Answer 34

Keep the pilot informed of the relationship between the speed of the aircraft and speed of sound.

Question 35

What is the formula for Mach number (M)?

Answer 35

Mach number = Speed of aircraft / speed of sound

Question 36

What speeds of aircraft are in the subsonic region?

Answer 36

Below the speed of sound. | Region up to critical Mach number

Question 37

What are the speeds around the aircraft in transonic regions?

Answer 37

Some below the speed of sound and some above. | Between critical Mach number and 1.3 Mach

Question 38

What happens in the supersonic region?

Answer 38

All speed around the aircraft are higher than the speed of sound (Mach numbers higher than 1.3)

Question 39

What is the troposphere?

Answer 39

Lowest layer in earths atmosphere. | different weather conditions

Question 40

What is the stratosphere?

Answer 40

Layer above the troposphere No rain clouds and temp does not change with change in altitude.

Question 41

What is the tropopause?

Answer 41

Boundary between troposphere and stratosphere. | 8km over North Pole, 16m over equator

Question 42

What is the standard atmosphere known as?

Answer 42

ISA (ICAO Standard Atmosphere)

Question 43

What is the standard altitude for the tropopause?

Answer 43

11km

Question 44

Under standard conditions, what does the temperature decrease with an altitude rate of?

Answer 44

6.5 degrees per kilometre.

Question 45

What is the standard temperature at the tropopause?

Answer 45

-56.5 Celsius

Question 46

Is there a change of temperature at the stratosphere?

Answer 46

No.

Question 47

What happens with density and pressure as altitude increases?

Answer 47

Decreases.

Question 48

What is the standard temperature at sea level?

Answer 48

288 Kelvin

Question 49

How is static pressure found?

Answer 49

Height x density x gravity.

Question 50

What are the standards for ISA temperature, density and pressure?

Answer 50

``` Temperature = 288K Density = 1.225kg/m3 Pressure = 1013.25 hecta Pa ```