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L3 Harris > POF Final PTSD > Flashcards

POF Final PTSD Flashcards

1
Q

What is the ideal gas law

A

P/density x T

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2
Q

How do you remember the ideal gas law

A

P/RhoTe (pirate)

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3
Q

What do you do for buffet onset boundary questions

A

M=0.80 is correct ANYTHING else isn’t

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4
Q

Equation for take off where downwash is least

A

1/2 wingspan x 3.28

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5
Q

Equation for landing where downwash is most

A

2 x wingspan x 3.28

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6
Q

When V is doubled what happens to parasite drag

A

Multiply by 4

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7
Q

Upon extension of a wing spoiler AOA is constant. What happens to Cd and Cl?

A

Cd increase
Cl decrease

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8
Q

What is lift caused by on the aileron

A

The lower pressure on the upper surface

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9
Q

What is total drag is 2 dimensional flow

A

PS2

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10
Q

What is total drag in 3 dimensional flow

A

PSI3

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11
Q

What does dihedral and anhedral do lateral stability

A

Dihedral increases it
Anhedral decreases it

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12
Q

How can aircraft always have positive longitudinal stability

A

CG must be ahead of the neutral point

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13
Q

Dorsal fin and ventral fin remember

A

DPP
VPN

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14
Q

What happens to stick force stability when on the aft limit

A

Lower and positive

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15
Q

What does SGA mean

A

Slipstream: on take off but tail on ground
Gyroscope: on rotation tail in the air
Assimetric: blade effect in air

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16
Q

Differentiate VMCG VMCA VMCL

A

VMCG: ground
VMCA: in the air
VMCL: landing

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17
Q

What is VMC the same as

A

VMCA

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18
Q

Induced drag is proportional to

A

Mass

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19
Q

Where is ground effect greatest

A

Wing tip

20
Q

What will flaps do to CL MAX and AOA

A

CL MAX: increase
AOA: reduce

21
Q

What will leading edge devices do to AOA and CL MAX

A

Increase both

22
Q

What is the relationship between temp and LSS

A

Proportional

23
Q

Above the tropopause what happens to TAS

A

Remains constant

24
Q

What happens when an aircraft accelerates into the transonic speed

A

AOA decrease due to compressability

25
Q

What happens in a climb above the tropopause

A

IAS decrease

26
Q

What happens in a descent below the tropopause

A

TAS constant

27
Q

What does LSS equation

A

38.95 x square root temp kelvin

28
Q

To avoid exceeding MMO you must:

A

Stop flying IAS and fly mach

29
Q

To avoid exceeding VMO you must:

A

Stop flying Mach and use IAS

30
Q

Climb below tropopause what happens to CL

A

Increase

31
Q

What does VB VC VD equal

A

VB= 66ft/sec
VC= 50ft/sec
VD= 25ft/sec

32
Q

How to calculate load factor

A

Change in Cl x change in AOA= y
Y+old Cl= new Cl
New Cl/old Cl= n

33
Q

What is Pitch angle

A

Longitudinal and horizon

34
Q

What is bank angle

A

Lateral and horizontal

35
Q

What is path angle

A

Speed vector and horizon

36
Q

Where is AOA

A

Speed vector and longitudinal

37
Q

What tendency will a cambered aerofoil have

A

Pitch down

38
Q

When you have a trimmed aircraft with a forward CG, what will the controls feel like

A

Normal

39
Q

What is stick force per g proportional to?

A

Altitude

40
Q

What does a higher mass do to Mcrit

A

Lower Mcrit because of a greater AOA to maintain level flight

41
Q

What does perpendicular link to

A

Cosine

42
Q

If flying at a normal speed and you feel rumbling in the rudder what does it mean

A

Slack control links

43
Q

What is load factor not affected by

A

Weight

44
Q

Load factors of a aerobatic plane

A

+6, -3

45
Q

Load factors of a utility plane

A

+4.4, -1.76

46
Q

Load factors of a normal plane

A

+3.8, -1.52

47
Q

Load factors of a transport plane

A

+2.5, -1

L3 Harris (13 decks)

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