Week 2: Single and Multi-axis AP Systems Flashcards

1
Q

On what axis do we roll?

A

Longitudinal

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2
Q

On what axis do we yaw?

A

Vertical Axis

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3
Q

On what axis do we pitch?

A

Lateral axis

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4
Q

This force is generated by engine/propulsion system

A

Thrust

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5
Q

What is the resistance of air against an aircrafts fwd motion called?

A

Drag

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6
Q

What is lift?

A

The force generated by motion of air passing over aircraft wings

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7
Q

This force is due to gravity

A

Weight

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8
Q

This force is drag caused by a lowered aileron during a turn

A

Adverse yaw

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9
Q

What is P factor?

A

Unwanted yaw due to asymmetric thrust by the descending blade in a climb

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10
Q

This attitude gyro gives the aircraft pitch and roll

A

Vertical gyro

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11
Q

Which gyro gives us yaw?

A

Directional gyro

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12
Q

What do deviations do?

A

Produce drive signals to servos to move control surfaces

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13
Q

What does the Turn-Coordinator and Accelerometer give the aircraft?

A

Position and rate sensing

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14
Q

What is the rate of turn of a Turn Coordinator?

A

3/s

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15
Q

With an aircraft in level flight what is the output of the two coils in the secondary?

A

No output from the two coils

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16
Q

When the aircraft rolls in one direction, what is the output result?

A

Output signal increases in one coil compared to the other

17
Q

The computer compares the phase of the roll attitude signal with the phase of the excitation signal to determine what?

A

The direction of bank

18
Q

The output signals can only be processed accurately by the AP computer ONLY if they are what degrees with the references excitation signal?

A

0 or 180

19
Q

What causes an unwanted phase shift that needs to be corrected?

A

Reactance of the transformer and other circuits

20
Q

What is the purpose of a Demodulator?

A

Converts AC error to DC error which is required to drive the DC servo amplifier

21
Q

What is the most basic mode in the Roll axis?

A

Wings level

22
Q

This mode in the roll axis adds a heading error to the wings level mode, what is it called?

A

Heading hold mode

23
Q

This mode in the roll axis adds a lateral deviation sensing to the HDG mode circuitry, what is it?

A

NAV mode

24
Q

Which instrument combines the functions of the DG and VOR/LOC/ILS?

A

HSI

25
Q

How is the CRS selection similar to the HDG bug operation?

A

Adds a lateral deviation

26
Q

The Pressure transducer is for what type of stability and the accelerometer is for what type of stability?

A

PT is long term, accel is short term

27
Q

The pressure transducer and accelerometer are used by the AP computer for which vertical modes?

A

ALT Hold, VS Hold, ILS APP,