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L3 Harris > POF Day 1 > Flashcards

POF Day 1 Flashcards

1
Q

What equation is to find weight?

A

MassXgravity

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2
Q

How do you convert knots to m/s

A

Multiply by 0.5144

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3
Q

What is the momentum equation

A

Momentum =massXspeed

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4
Q

How do you find a minute?

A

Minute=forceXdistance

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5
Q

How do find force

A

Force= massXgravity

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6
Q

What is laminar air flow?

A

Smooth air flow

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7
Q

What is the sea level pressure?

A

1013hpa

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8
Q

What is the density formula?

A

Density=mass/volume

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9
Q

What happens to the density of you increase the pressure?

A

Increase

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10
Q

What happens to density if you increase the temperature?

A

Decrease

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11
Q

What happens to the density if you increase the humidity?

A

Decrease

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12
Q

What is pressure and volume proportional to?

A

Temperature

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13
Q

Every 1000 foot what does the temperature go down by?

A

2

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14
Q

What is static pressure?

A

Weight after air molecules create a force per unit in all directions

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15
Q

What is dynamic pressure

A

The pressure of the air exerted on a body due to motion

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16
Q

What is the dynamic pressure equation

A

Dynamic pressure=1/2XdensityXspeed^2

17
Q

What does a plane use to take in dynamic pressure

A

Pitot tubes

18
Q

What does a static port do?

A

Takes in the static pressure exerted on the plane to calculate the total dynamic pressure for the air speed indicator

19
Q

What is indicated air speed (IAS)

A

The speed shown on the ASI but can have mechanical problems like instrument and positioning

20
Q

What is calculated air speed (cas)

A

The same as isa but run through a computer to remove the mechanical problems

21
Q

What is equivalent air speed (esa)

A

Only used when going slower 0.3 Mach as the air is incompressible

22
Q

What is the true air speed (tas)

A

Speed reliable to the air it is flying

23
Q

What anagram helps for remembering air speed

A

ICET is pretty cool drink

24
Q

What is dynamic pressure proportional too

A

Speed^2

25
Q

How do you calculate ground speed

A

Ground speed=true air speed+tail wind-head wind

26
Q

What is turbulant air flow

A

Blocked air flow that is unsmooth

27
Q

What is the point where the air flow gets stopped at the front

A

Stagnation point

28
Q

When a air flow gets close what happens to the pressure

A

The dynamic pressure goes up and the static goes down

29
Q

What happens to pressure when an air flow opens back up

A

Dynamic pressure goes down and static goes up

30
Q

What is bernoullis therom

A

In a flow of ideal fluid, the sum of static pressure and kenetic energy per unit volume (dynamic pressure) remains constant

31
Q

Where is the area of high static pressure on an object

A

At the front where the airflow meets it

32
Q

What is an aerofoil

A

A cross section of a wing

33
Q

What is the front and back of an aerofoil

A

Leading edge, trailing edge

34
Q

What is the line from the front of an aerofoil to the back called

A

The chord line

35
Q

What is a camber

A

A camber is a angled aerofoil to gain lift

36
Q

How does lift and drag work together

A

Lift goes directly up and the drag pulls it back to create total reaction

37
Q

What happens to the centre of pressure in a symmetrical aerofoil

A

It doesn’t move

38
Q

What is the lift equation

A

Lift=1/2XdensityXspeedXsurface areaX coefficient of lift

L3 Harris (13 decks)

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