Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

UH-60M Blackhawk - 2018 > Systems 2 - Flight controls and hydraulics > Flashcards

Systems 2 - Flight controls and hydraulics Flashcards

1
Q

The pilot assist area is pressurised by #____ system

A

2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

1 Tailrotor servo is pressurised by #____ system

A

1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Pri servo #1 is pressurised by #_____ system, pri servo #2 is pressurised by #_____ system

A

1 , 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Which trim system is the only one using hydraulics:

A

PITCH

(hydromechanical)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

If you turn off SAS/Boost, you also have to turn off ____

A

FPS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which axes does the SAS work in?

A

Pich
Roll

Yaw

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Which axis does the Trim work in?

A

Pitch

Roll

Yaw

Collective

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Which axis does the FPS work in?

A

Pitch

Roll

Yaw

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which axis does the FD work in?

A

Collective

Pitch

Roll

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

The SAS has up to _____% control authority, where as the pilot and FPS has _____%

A

10%

100%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

FPS is short for?

A

Flight path stabilization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

If SAS 1 or 2 is off, control authority is reduced to _____%

A

5%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Eraratic electrical failure imput may cause small oscillation which can be felt in the _____. However no SAS malfunction can physically drive the _____. Failure of SAS is usually bot nut necessarily followed by a _____ indication

A

Eraratic electrical failure imput may cause small oscillation which can be felt in the flight controls. However no SAS malfunction can physically drive the pilots flight controls. Failure of SAS is usually bot nut necessarily followed by a failure/advisory indication

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the function of the Mechanical Mixing Unit?

A

Reduces inherent control coupling

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

If any Primary servos fail you ______

A

Land ASAP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The Backup pump will pressurise what components?

A
  • Any #1 and #2 systems
  • # 2 Tail rotor servo
  • APU accumulator
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

When will the backup pump engage?

A

In case of:

  • System #1 or #2 fails
  • # 1 TR fails
  • # 1 res low
  • APU accumulator on
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Where is the pedal adjust handle located?

A

On the side of the instrument panel.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Which cockpit control has a telescoping (extend/retract) feature?

A

Co-pilot’s collective

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Outputs from cockpit controls are carried by mechanical linkage through the pilot assist servos to the _____

A

Mechanical Mixing Unit (MMU)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

On which panel can you find both the TAIL SERVO and BACKUP HYD PUMP switches?

A

MISC SWITCH panel

22
Q

The MMU is designed to reduce _____

A

Inherent Control Coupling

23
Q

If both tail rotor control cables fail the tail rotor wil automatically center at 10.5* pitch. This will allow trimmed flight between what airspeeds?

A

25 KIAS - 145 KIAS

24
Q

Collective/Airspeed to yaw mixing has what function?

A

Compensates for the torque effect caused by changes in collective position.

It decreases tail rotor pitch as airspeed increases and the tail rotor and cambered fin become more efficient.

25
Q

Name the four mechanical mixes provided by the MMU.

A

Collective to Pitch, Collective to Roll, Collective to Yaw, and Yaw to Pitch.

26
Q

How does the MMU minimize inherent control coupling?

A

By combining, summing, and coupling collective, pitch, and yaw inputs.

27
Q

Why is Collective/Airspeed to Yaw mixing completely phased out when the airspeed is above 100 kts?

A

Due to the efficiency of the tail rotor and cambered fin.

28
Q

The Primary servos are labled as:

A
  • LAT, AFT, FWD
  • Stage 1 and 2
29
Q

Moving the SERVO OFF switch from NORM to 1ST STG or 2ND STG will ______

A

Turn off that stage (1st or 2nd) of the three primary servos

30
Q

What prevents the two stages of the primary servos from being turned off simultaneously?

A

Electrical interlocks.

31
Q

The fluid quantity switch on the hydraulic pump module activates the appropriate RSVR LOW caution which indicates ______

A

A loss of hydraulic fluid for that system (Leak).

32
Q

What are the #1 and #2 hydraulic pumps mounted to and driven by?

A

The Accessory Modules.

33
Q

Why is the depressurization valve only connected on the Backup Pump?

A

To reduce output pressure of the pump upon startup of the electric motor.

34
Q

What components are in the Pilot assist area?

A

Trim (pitch)

Boost (Collective , Yaw , Pitch)

SAS (Pitch , Roll , Yaw)

35
Q

LDI is short for?

A

Leak Detection Isolation

36
Q

RSVR 1/2 LOW means:

A

Hydraulic fluid level has dropped below about 60% of full capacity (leak in the system).

37
Q

HYD PUMP 1/2 FAIL means?

A

No. 1/2 hydraulic pump output pressure below minimum.

38
Q

PRI SERVO 1 FAIL means?

A

First stage pressure is shut off, has dropped below minimum, or servo pilot valve has a jam

39
Q

T/R SERVO 1 FAIL means?

A

Pressure to the first stage tail rotor servo is below minimum, or the servo pilot valve has a jam.

40
Q

The No. 1 hydraulic system supplies hydraulic fluid through it’s transfer module to what servos?

A

The first stage primary servos and first stage tail rotor servo.

41
Q

The RSVR 1 LOW caution illuminates when?

A

When there is 60% fluid remaining in the reservoir (leak in the system).

42
Q

If a tail rotor cable breaks, what caution and/or advisory would appear?

A

T/R QUAD FAIL caution

43
Q

SAS OFF caution indicates?

A

Indicates a failure that affects both the SAS 1 and SAS 2 or loss of hydraulic pressure to the entire SAS system.

44
Q

BOOST SERVO OFF caution indicates:

A

Indicates loss of second stage hydraulic pressure to the collective and/or yaw boost servo

45
Q

FPS FAIL caution indicates?

A

One or more of the FPS functions has disengaged due to a failure (pitch or roll attitude, heading hold, or turn coordination).

46
Q

TRIM FAIL caution indicates

A

The trim actuator(s) are not responding correctly to the FCC signals.

47
Q

The No. 2 hydraulic system supplies pressure through the transfer module to what servos?

A

The second stage primary servos and the pilot-assist servos.

48
Q

Appearance of the BOOST SERVO OFF caution indicates what?

A

Loss of hydraulic pressure to the collective and/or yaw boost servo.

49
Q

The failure of the No. 2 hydraulic system illuminates what cautions / advisories if the backup pump fails to come on?

A

HYD PUMP 2 FAIL, PRI SERVO 2 FAIL, BOOST SERVO OFF, SAS OFF, TRIM FAIL and FPS FAIL.

50
Q

What is the purpose of the APU Accumulator?

A

Provide a hydraulic charge to the APU start motor.

51
Q

. In flight, the backup pump mode automatically sets to?

A

The AUTO mode even if the switch is in the Off or ON position.

52
Q

What does the backup pump supply pressure to?

A

No. 1 and/or No. 2 hydraulic systems, 2nd stage tail rotor servo and APU accumulator.

UH-60M Blackhawk - 2018 (20 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions