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53E > ASE > Flashcards

ASE Flashcards

1
Q

AN/AAR 47:

A

Missile Warning System

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2
Q

AAR 47: purpose

A

passively detect attacking IR missiles and battlefield lasers.

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3
Q

AAR 47: provides what 3 warnings

A

Missile Lasers Hostile Fire

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4
Q

AAR 47: IOSC stands for? How many are on the aircraft

A

Integrated Optical Sensor Converter

4

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5
Q

AAR 47: Missile Warning Optic

a. Location
b. purpose

A

a. top of IOSC
b. sees only UV radiation, filtering out the wrong photons. single-point detector and sees the sum of all in-band UV photons in its FOV.

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6
Q

AAR 47: IOSC Photodiode

a. location
b. purpose

A

a. lower right
b. detects laser beam riders, range finders, and designators. Detects lasers in the 0.5 to 1.6 micron range. Software classifies lasers by pulse repetition interval (PRI).

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7
Q

AAR 47: IOSC HARLID

a. location
b. purpose

A

High Angular Resolution Laser Irradiance Detector

a. lower middle
b. provides precise arrival angle of range finders and designators.

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8
Q

AAR 47: IOSC Adjunct Detector

a. location
b. purpose

A

a. lower left
b. Provides intermittent scan when the MW optic is bloomed out.

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9
Q

AAR 47: can display how many of each type of threat

A

1 MW threat

3 LW threats

1 HFI per quadrant

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10
Q

AAR 47: MW display

A

1 MW threat at a time

3 alerts:

MW+intercardinal azimuth.

Quadrant arrow.

Aural warning.

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11
Q

AAR 47: LW threat display

A

3 LW at one time

Four Alerts:

LW + relative azimuth angle on alphanumeric display. Displays highest pri threat.

Compass rosette indication. Up to three.

Class (R, D, BR). Displays highest pri threat.

Aural warning.

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12
Q

AAR 47: HFI threat display

A

1 HFI threat per quadrant

3 alerts:

  1. HFI on display.
    1. Types
      1. RKT=Rockets
      2. Gun=small arms
  2. Quadrant on compass rosette.
  3. Aural warning.
    1. RKT =2 seconds
    2. Guns= 3 seconds
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13
Q

AAR 47: Threat Display Priorities:

A

Be My Little Rocket Gun Randy

  1. Beam Riders
  2. Missile Threats
  3. laser designators
  4. rockets
  5. Guns
  6. Range finders
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14
Q

ALE-47: Purpose

A

Defends against IR and radar fired missiles through expendables

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15
Q

ALE-47: expendables

A

very basic:

Chaff: RR-129A/AL and RR-144A/AL

Infared Decoy Flares: MJU-32 & MJU-67

Decoy Devices: MJU-49

Training Flares: SM-87

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16
Q

ALE-47: Infared Decoy Flares Do what?

A

provide an alternate heat source

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17
Q

ALE-47: Decoy Devices explain and nomenclature

A

flares that burn in different parts of the IR spectrum to be less visible to the naked eye.

proword: pyrophoric wafers
1. MJU-49B (covert)

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18
Q

What ASE Gear do we have?

A

APR-39: Radar Signal Detecting Signal

AAR-47: Missile Warning System

ALE-347: CMDS

AAQ-25: DIRCM (Directional Infrared Countermeasure)

BPS?

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19
Q

ASE Philosophy:

A

TSA JA

1) Tactics
2) Signal Reduction
3) Aircrew Warning
4) Jamming/Decoying
5) Aircraft Hardening

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20
Q

APR-39: How many antennas are on the aircraft for this system?

Where is the location of the L/R spiral?

A

4 spiral antennas: R is on the 10 and 4 oc pos

L is on the 2 and 8 oc pos

1 blade antenna

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21
Q

APR-39: What radar f does it detect?

A

E, F, G, H, I, J and portions of the C and D.

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22
Q

APR-39: If the DSCRM is on the signal is processed to determine their conformance to what criteria?

A
  1. The signal level must be greater than the minimum threshold level.
  2. Pulse width must be less than the maximum pulse width.
  3. PRF must be greater than the minimum pulses per second.
  4. The pulse train must exist with not less than minimum pulse train.
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23
Q

Where is the APR-39 blade antenna mounted? What band does that pick up? What does that provide?

A

On the underside of the aircraft.

It picks up low-band signals (portions of the C and D bands) and passes it to the comparator.

If the signal correlates to the high band signals lights Missile Alert Lamp

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24
Q

APR-39: When does the Missile Warning Lamp alert us?

A

The comparator High band signals are received from radar receivers and low band signals from the blade antenna. When these two correlate the comparator activates the missile alert lamp. Indicating the presence of C/D band signals associated with missile guidance. [not that there is a missile in the air]

25
Q

AAR-47: Sees in what spectrum of light?

A

UV spectrum

26
Q

AAR-47: What is blanking and how do you know that it is occurring?

What indications are lost if it is blanking and Why?

A

Blanking is the ability of the sensor to protect itself against extremely high in-band levels of UV light.

B on the alphanumeric display w/ quadrant threat arrow of the blanking sensor removed.

MW and HFI functions are interrupted because the MW optic is shut to protect the system.

27
Q

AAR-47: What are the different clutter levels and how are they displayed?

A

The clutter level is displayed on the left side of the screen as 0 (low), 1 (med), 2 (high).

28
Q

ALE-47: how many expendable cartridges can each magazine hold?

A

30

29
Q

ALE-47: What is a Magazine ID and how many are available.

A

Uniquely IDs the Payload mix;

There are 16 MAG ID Settings

30
Q

ALE-47: What does the manual setting do?

A

Allows the pilot to select from one of 4 manual dispense options.

1 to 2 to 1 = yes

31
Q

ALE-47: On the collective thumb switch, [Dispense Switch], which way gets you what?

A

Fwd: Man 1-4

Left: Man 5 (Chaff)

Right: Man 6 (Preemptive)

Aft: Semi-Auto Consent: clears all low stores limit

32
Q

ALE-47: Modes

A
  1. MAN- you only get what you dispense not what is activated by the RWR
  2. Semi- prepares a dispense program IN RESPONSE to threat by the RWR; but we must consent to the kick off
  3. Auto- Same as semi but we don’t have to consent to the kick off
  4. BYPASS- Bypasses programmer and commands a dispense directly from the sequencer
33
Q

What is the nomenclature for the DIRCM

A

AN/AAQ-24(V)25

34
Q

When will the DIRCM tell the ALE to dispense flares if selected?

A

Busy, Blocked, or Broken.

35
Q

What are the major components to the DIRCM?

A
  1. Signal processor
  2. Guardian Laser Tracker Assembly (2)
  3. Infared MWS Sensor (5)
  4. Control Indicator Unit
36
Q

How does the DIRCM defeat a threat?

A

The Sensor sees two different bands of the UV spectrum which allows it eliminates false threats. Once it has a threat it passes it to the SP which slews the GTLA IR lasers. Once onto the threat, the GTLA uses a Fine tracking sensor to stay honed on the threat.

37
Q

NOHD of the DIRCM

A

52 meters

38
Q

What is the nomenclature of the Radar Signal Detection Set?

A

AN/APR-39 (V) 1

39
Q

What is the nomenclature for the Countermeasure Dispensing System?

A

AN/ALE-47

40
Q

What is the nomenclature for the Directional Infared Countermeasure?

A

AN/AAQ-24

41
Q

What is the role of the ASE?

A

To reduce the vulnerability of the aircraft.

42
Q

What is the depression angle of each of the antennae for the APR-39 mounted?

A

0 to 20 degrees

All must be at the same angle.

43
Q

What does the comparator do on the APR-39?

A

Electronically decides if the received signals meet the necessary conditions to indicate a threat.

44
Q

What battlefield lasers does the AAR-47 designed to detect?

A
45
Q

The four wide Field of View sensors employed by the AAR-47 detect what type of radiation from what area of the missile that is being shot at you?

A

UV radiation from the plume of the missile

46
Q

ALE-47: How fast can the ALE-47 jettison all expendables?

A

30 in 4 seconds

47
Q

ALE-47: how many chaff/flares do we hold total?

A

120; 60 per side; 30 per bucket

48
Q

ALE-47: What kind of IR decoys do we use?

A
  1. -32B or A/B (A/B has improved internal parts)
    1. “Pyrotechnic” Chemical Compound (MTV)
  2. -MJU-49/B
    1. “Pyrophoric” alloy that reacts with O2 in the atmosphere
    2. Significant amounts of IR radiation, but relatively low visible= Covert (can only really see them slightly at night)
  3. -MJU-67
    1. Multi-spectral
49
Q

What kind of CHAFF do we use?

A
  1. RR-129A/AL
  2. RR-144
    1. Training Flares-doesn’t interfere with ATC radar
50
Q

NOHD for the GTLA lasers?

A

Single: 37m

Both: 52m

51
Q

AAR-47: What does MDF stand for?

A

Mission Data File

52
Q

DIRCM Sequence

A
  1. Detect - Rocket Plum
  2. Declare - threat
  3. Handoff
  4. Slew
  5. Track-
  6. Jam

Hand off between 3 and 4

53
Q

ALE-47: What types of chaff do we use and explain the difference? What threats do they defeat? Under what indications would we use them?

A
  1. RR-129: RF passive counter measure; actual chaff
  2. RR-144: Training chaff [chaff that doesn’t interfere with ATC radar]

Chaff is used to defeat Radar threats. We would us it in the event that we get indications on the APR-39; if we “MUD” we would pop chaff, 3d Manuever into terrain if able or beam the threat if not.

54
Q

What kind of Flares do we use? What is each one made out of? What spectrum do they burn in?

A
  1. MJU-32: Magnesium-teflon; Visible and near IR
  2. MJU-49: pyrophoric metal; Near IR with very little in the visible [covert daytime and slightly visible at night]
  3. MJU-67: _____________; Multi-Spectral
55
Q

What is the DIRCM?

A

Is a missile warning & laser DIRCM system designed to defeat a wide range of seeking missiles.

56
Q

What is the APR-39? One sentence.

A

Provides the helicopter aircrew w/ bearing & mode of operation of radars that operate in E-J and portions of C&D Bands for radar associated systems.

57
Q

1 sentence def for AN/AAR-47?

A

Passive detection of attacking IR missiles, battlefield lasers, and hostile fire while minimizing false alarms.

58
Q

1 sentence def for ALE-47?

A

Integrated, reprogramable, threat adaptive, computer controlled aircraft defense system, designed to provide protection against hostile radar and IR threats through expendable decoys.

53E (31 decks)

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