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MH-60R BONUS deck > Fam 4 > Flashcards

Fam 4 Flashcards

1
Q

Collective to yaw

A

Cause: main rotor torque

Compensation requirement: nose yaws right when collective is increased

Compensation: tail rotor thrust is increased

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2
Q

Collective to lateral

A

Cause: lateral lead (tail rotor propeller effect)

Compensation requirement: helicopter drifts right when collective is increased

Compensation: rotor disc is tilted left

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3
Q

Collective to longitudinal

A

Cause: rotor downwash on stabilator

Compensation requirement: nose pitches up and helicopter drifts aft when collective is increased

Compensation: rotor disc is tilted forward

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4
Q

Yaw to longitudinal

A

Cause: tail rotor lift vector

Compensation requirement: nose pitches down and helicopter drifts forward when left pedal is applied

Compensation: rotor disc is tilted aft

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5
Q

Collective/airspeed to yaw (electronic compensation)

A

Cause: camber of tail rotor pylon varies side load with airspeed

Compensation requirement: nose yaws left as airspeed increases

Compensation: a portion of the main rotor torque compensation is provide by a trim input that is proportional to collective position and airspeed. The trim input is then progressively washed out as pylon side loads increase with airspeed

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6
Q

Where are the flight controls inputs combined? And what does this mean?

A

In the mixing unit to produce uncoupled airframe response characteristics.

Meaning the mixing unit applies corrective flight control inputs to counter unwanted responses from the aircraft.

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7
Q

Boost servo hardover vs PAS malfunction

A

PAS malfunction = 3 cautions (BOOST SERVO OFF + SAS + AFCS DEGRADED)

Boost servo hardover = no cautions

They feel similar though

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8
Q

Boost servo hardover

A
  1. “Boost boost boost”
  2. Sas/boost - off

C: up to 75# of left pedal force will be required when hovering with boost servos off with starboard crosswinds (from right). This value is significantly lowered with port crosswinds (from left)

C: landings with BOOST SERVO OFF on all single spot air-capable ships should only be attempted if there is no large landing platform (LPD or larger) or shore base available

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9
Q

1 AND #2 hyd pump fail

A

1 hyd pump & #2 hyd pump & #1+#2 hyd pump fail & backup pump on

  1. Reateict flight control movement
  2. Land as soon as possible
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10
Q

1 OR #2 hyd pump fail (single)

A

Non memory

(#1/#2) hyd pump and backup pump on

Note: momentary loss of pressure to the T/R servo with the #1 HYD PUMP failure can cause LDI logic to automatically switch from the #1 T/R servo to the #2 T/R servo resulting in the illumination of the #1 TAIL RTR SERVO caution and #2 TAIL RTR SERVO ON advisory

Warning: failure to ensure BACKUP PUMP switch is ON or in AUTO position prior to landing with a #1 HYD PUMP caution present will result in the loss of tail rotor control when the WOW is activated

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11
Q 
#1 RSVR LOW
#1 TAIL RTR SERVO
#2 TAIL RTR SERVO ON 
BACKUP PUMP ON
A

1 tail rotor servo leak

Land as soon as practicable

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12
Q 
#1 RSVR LOW
#1 HYD PUMP
BACKUP PUMP ON
A

1 primary servo OR #1 transfer module leak

  1. Servo -1st off
  2. Land as soon as possible

If the BACKUP RSVR LOW caution also appears or thr backup pump fails:
3. Land as soon as possible

(Note: be prepared for loss of tail rotor control)

If the #2 PRI SERVO PRESS caution and/or HYD warning appears:
4. Land immediately

(Warning: failure to ensure BACKUP HYD PMP switch is in AUTO or ON position prior to landing with a #1 RSVR LOW or #1 HYD PUMP caution present will result in loss of tail rotor directional conteolnwhen the weight on wheels switch is activated)

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13
Q 
#1 TAIL RTR SERVO
#2 TAIL RTR SERVO ON
BACKUP PUMP ON
A

1 tail rotor servo malfunction

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14
Q

2 RSVR LOW

BOOST SERVO OFF
SAS
AFCS DEGRADED

A

Pilot assist servo leak

Non memory

W: consider securing sas/boost prior to reaching landing environment

C: try to land on LPD+ or shore
C: 75# of left pedal w/right crosswind (starboard), significantly reduced with left crosswind (port)

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15
Q 
#2 RSVR LOW
#2 HYD PUMP
BACKUP PUMP ON
A

2 primary servo OR #2 transfer module leak

  1. Servo - 2nd off
  2. Land as soon as practicable

(Note: failure to ensure BACKUP PUMP switch is in AUTO or ON position prior to landing with a #2 HYD PUMP caution present will result in loss of pilot asset servos when the WOW switch is activated)

if the BACKUP RSVR LOW caution also appears or backup pump fails:
3. Land as soon as possible

(Note: be prepared for loss of the PAS)

If the #1 PRI SERVO PRESS caution and/or HYD warning appears:
4. Land immediately

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16
Q

BOOST SERVO OFF
SAS
AFCS DEGRADED

A

non memory

**shallow approach to a hover

C: 75# of left pedal with starboard XW (from right). Significantly reduced with port XW (from left)
C: try to land on LPD or larger or land

17
Q

BACKUP RSVR LOW

A

non memory

18
Q 
UTILITY HYD PUMP
or
UTILITY HYD PUMP HOT
or
UTILITY HYD RSVR LOW
A
  1. stop dome
19
Q

AFCS DEGRADED

A
  1. safe altitude and airspeed - establish (wave off, ITO, as req.)

Note: if the AFCS DEGRADED caution appears during a night/IMC coupled hover or automatic approach, consideration may be given to continuing hover/approach if not disoriented or unstable

20
Q

AFCC I/O FAIL
and
AFCS DEGRADED

A

non memory

cause is AFCC power loss…just reset CBs

21
Q

SAS (caution)

A

W: failure of either SAS 1 or SAS 2 are usually, but not necessarily, following by a fail advisory indication. This can include loss of altitude hold function

The cause is loss of hydraulic pressure to SAS actuator(s) or loss of electrical power to both SAS 1 and SAS 2

22
Q

What is the main purpose of the hydraulic system?

A

to provide pressure for the flight control system, APU, and rescue hoist system

23
Q

Utility hydraulic system provides hydraulics for what?

A

sonar reeling machine only

24
Q

Hydraulic cautions…. what does each one mean?

  1. # 1/#2 RSVR LOW
  2. BACKUP RSVR LOW
  3. # 1 HYD PUMP
  4. # 2 HYD PUMP
  5. # 1 TAIL RTR SERVO
A
  1. # 1/#2 RSVR LOW = low level switch in rsvr activated
  2. BACKUP RSVR LOW = LL switch in bkup rsvr activated
  3. # 1 HYD PUMP = loss of #1 hyd px
  4. # 2 HYD PUMP = loss of #2 hyd px
  5. # 1 TAIL RTR SERVO = loss of 1st stage tail rotor px
25
Q

How does collective inputs get to rotors?

A

Coll -> PAS via boost servos and trim actuators -> mixing unit -> ALL 1st stage primary servo and 1st stage T/R servos -> rotors

26
Q

How does pitch inputs get to the rotors?

A

PITCH via cyclic -> PAS via boost servo (SAS and Trim actuators) -> mixing unit -> fore and aft primary servos -> rotors

27
Q

What does the mixing unit do?

A

combines the 3 flight control inputs to produce uncoupled airframe response characteristics…..meaning the mixing unit applies corrective flight control inputs to counter unwanted response

28
Q

PAS Malfunction Approach and Landing

A
  1. normal or shallower approach to 20’AGL hover. Turn on HVR mode
  2. turn into wind, lower collective. Pause at 10’AGL to verify stability
  3. USE SMALL CONTROL INPUTS
  4. keep collective full down until SAS/BOOST turned on

MH-60R BONUS deck (26 decks)

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