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HSM-72 HAC > ASW > Flashcards

ASW Flashcards

1
Q

Minimum px to jettison full sonobuoy launcher

A

1100 psi

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2
Q

If sonobuoy launcher px less than 1100 psi

A

last buoys in sequence may not jettison

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3
Q

System secures at __ psi to ensure safe separation of launched buoys

A

250 psi

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4
Q

Carry up to __ buoys (__ with LHEP)

A

25; 15

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5
Q

Carry up to __ lbs of buoys

A

800

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6
Q

Sonolauncher is connected to which PIU?

A

LIB

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7
Q

Sonolauncher servicing

A

1175 +/- 25 psi

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8
Q

can you launch a buoy with transducer in the water?

A

No

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9
Q

DICASS Shallow Family

A

50, 150, 300 ft

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10
Q

DICASS Deep Family

A

90, 400, 1500 ft

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11
Q

DICASS stands for

A

Directional Command Activated Sonobuoy System

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12
Q

DICASS preset channels

A

A, B, C, D

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13
Q

DIFAR stands for

A

Directional Frequency Analysis and Recording

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14
Q

AN/SSQ-53F/G

A

DIFAR

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15
Q

AN/SSQ-36B

A

BT buoy

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16
Q

AN/SSQ-62E/F

A

DICASS

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17
Q

DIFAR depths

A

90, 200, 400, 1000

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18
Q

Cable angle sensors measure

A

angular displacement of cable from center of funnel relative to a/c orientation

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19
Q

What does RMIU do?

A

compensates longitudinal and lateral displacements for reeling machine installation and pitch of funnel, then provides them to AFCS and mission systems

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20
Q

Each time dome lowering/raising is stopped/started in water, cable angle signals are decoupled from AFCS by RMIU for __ seconds to __

A

9; prevent erratic helo movement due to waves set in motion along transducer cable as dome starts/stops

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21
Q

Outer and inner rings on cable angle

A

8.5 deg; 4.25 deg

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22
Q

CABLE ANGLE AT LIMIT

A

7.5 deg

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23
Q

scale on tick marks

A

2 deg per tick

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24
Q

Warning for outer ring being exceeded while dome is exiting the water

A

significantly increased risk of dome striking a/c including rotors which may lead to injury and/or death

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25
Q

Caution for outer ring being exceeded while dome is exiting the water

A

increased risk of sonar dome striking a/c which may result in equipment damage

26
Q

AFCS defaults to hover mode when dome is raised through

A

27 +/- 12 ft

27
Q

If one axis (lat/long) fails, press __; remaining axis is __

A

reset; fully functional

28
Q

Conditions required for cable angle hover mode

A

+/-5 KGS, altitude hold within 10 ft of selected altitude, dome wet indication

29
Q

cable angle hover mode keeps the dome perpendicular to

A

the water surface/horizon

30
Q

with submerge override engaged, cable angle hover will ___ disengage when dome leaves water

A

not automatically

31
Q

Mk-54 Launch Envelope Speeds & Altitude

A

55-110 KIAS

200-525 ft

32
Q

Sonobuoy Launch Envelope

A

> = 70 ft
0-150 KIAS
0-30 AOB

33
Q

Gate Position

A

Aircraft into wind, wings level, FTP on nose (0.3 nm for day, 0.5 no for night)

34
Q

Day and Night approach distances

A

Day - 0.6 nm, 0.3 nm

Night - 1.5 nm, 0.5 nm

35
Q

Engage hover mode when

A

Less than 5 KGS

36
Q

Steady coupled hover

A

70 ft, less than 4 KGS

37
Q

At night, turns shall not be initiated until

A

Stabilized flight at 150 ft

38
Q

Requirements for Cable Angle Hover Mode

A

Ground speed of +/- 5 knots
Altitude hold within 10 ft of selected
Dome wet indication

39
Q

Potentiometers should be used to adjust groundspeed to (WING SOP)

A

No greater than 2 KGS

40
Q

Cable angle hover mode ___ be operable for all dipping sonar ops (WING SOP)

41
Q

Dipping sonar ops ___ not be conducted in seas with wave heights in excess ___, winds in excess of ___, or known/discovered currents greater than ___ during unit level training or fleet level exercises (WING SOP)

A

Should; 10 ft, 17-21 kts, 4 kts

42
Q

During dipping with or without a sub, POCL shall be no more than ___. When ceilings are above 1000 ft, POCL shall be no more than ___. During operational ASW involving a sub, under conditions that preclude a freestream recovery, then POCL ___.

A

Half the ceiling up to 1000 ft ceiling

500 ft below ceiling

Need not be restricted

43
Q

SSBN class

A

ballistic missile/nuclear powered; carry nucs

44
Q

SSN class

A

nuclear powered; attack ships

45
Q

SSGN class

A

guided cruise missile/nuclear; attack countries

46
Q

Russian diesel

47
Q

SSP class

A

air independent propulsion (diesel)

48
Q

SUBMRG light on at ___ ft when lowering and off at ___ ft when raising

49
Q

RMCU 1177

A

Loss of uplink

50
Q

Kiting light

A

Condition when cable is paying out at a greater rate than TA depth is increasing

51
Q

Where can you find RMCU codes?

A

Ch 18 of NATOPS

52
Q

Normal dipper modes

A

Automatic and manual hydraulic modes

53
Q

Auxiliary Hydraulic Mode

A
  • manually controls Servo valve if RMIU fails
  • bypasses RMIU and RMCU and all safety locks
  • does not stop it at trail, lock it or seat it
  • used if electrical failure
  • used to correct miswraps, reseat to get a SEATED light, to recover transducer when reeling machine control system has failed
54
Q

Caution about lowering the dome via aux hyd

A

Will damage electronics because it doesn’t have ESD

55
Q

Aux Electric Mode

A
  • full safety features
  • stops at trail
  • slower raise speed —> cable not sufficiently tensioned so may cause problems if raising TA from 1000 ft or deeper
  • used in the event of a hydraulic fault
  • can only be used to recover dome
  • except in emergency, shall only be used if dome submerged
56
Q

Aux Hardware Electric Mode

A
  • bypasses all safeties - doesn’t auto stop or lock
  • entered by holding RMCU SAFETY OVRD and RMCU RAISE when in aux electric
  • used when failures prevent any other mode
  • raise only
57
Q

Hand Crank Mode

58
Q

Bottom light

A

Within 50 ft of bottom

59
Q

Priorities for landing location with hung dome

A
  1. Ashore or aviation ship (CVN or LHA/LHD)
  2. Air capable ships may be considered if ambient conditions and POCL permits pilots’ adequate reference to position the aircraft
60
Q

Submerge override (WING SOP)

A

Shall not be used for routine ops

HSM-72 HAC (47 decks)

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