Jump to content

AN/AAR-47 Missile Approach Warning System


Recommended Posts

f4bc714d.jpg

 

AAR-47 nomenclature

AN/AAR-47A(v)2 or AN/AAR-47B(v)2 Missile Warning Set (MWS)

-Operational Flight Programs (OFP) 30.41 and 30.50

-Control indicator software versions 1.00-1.02

-Sensore software loads 1.03-1.04

 

Sensor FOV

intercardinal headings (45,139,225,315), 90 deg FOV

components

Integrated Optical Sensor Converters (IOSCs), Countermeasure Signal Processor (CP), Control Indicator (CI)

 

CP location and purpose

left E-bay, receives and processes MW and LW signals from IOSCs and sends signal to CMDS if criteria is met

 

IOSC apertures

-MW optics collects UV radiation and filters out photons of the wrong wavelength

-Photodiode detects the signal from low power Beam rider, Range Finder, and Designators

-High Angular Resolution Laser Irradiance Detector provides angle of attack

-Adjunct Detector works with blanking circuitry to protect from saturation during periods of intense in band radiation

 

Difference between IOSC versions

B(v)2 has an additional capability to detect noise patterns in UV clutter (tonal noise). it subtracts such tonal noise and evaluates the cleaned-up signal for the presence of an attacking IR missile

 

how many laser threats can be displayed at one time

3

 

what is displayed for laser threats

"LW" and azimuth of highest priority, compass rosette indication (up to 3), Threat classification (R, D, BR) of highest priority, LW uniques aural warning

 

What is displayed for Missile threats

"MW" and relative azimuth quadrant angle indication, Quadrant arrow indication MW unique aural warning

 

what is displayed for hostile fire

OFP 30.41: "HFI", quadrant indiction on rosette (multiple little lines), HFI unique aural warning

OFP 30.50: same except "RKT" or "GUN" depending

 

Threat priority

Beam Rider, Missile threat, Laser Designator, HFI (rockets then guns for OFP 30.50), Range Finder

 

What is displayed for blanking

OFP 30.41: "# BLNK" with large arrow removed from rosette for blanking sensor

OFP 30.50: "B" with large arrow removed from rosette for blanking sensor

 

clutter indication

reports average UV in band noise for each sensor, updated every 5 seconds, shows 4 sensors at 3 possible levels "L" low, "M" Medium, "H" High

 

how many MW events can be logged

6

 

OLFT RQST

O-Level Function Test: end to end test, requires support equipment

 

OLST RQST

O-Level Sensitivity Test: tests sensitivity of IOSCs, requires support equipment

 

how to hear all tones?

OFP 30.50 only, use "TONE TST?" in bit -a little "t" will appear in front of all warning types

 

ready screen for OFP 30.41

"MW RDY"

 

ready screen for OFP 30.50

"HCL RDY" depending on what is on, Laser automatically on, H&C can either turn on individually or choose "ALL ON?" in bit

 

types of flares

MJU-32/B or MJU-32A/B, MJU-38/B OR MJU-38A/B (jets), MJU-49/B, SM-875 sim flares

 

Equipment Warm-Up Times:

AN/AAR-47 Missile Approach Warning System

20 Seconds

 

wavelength of laser the Missile Approach Warning detects

500-1600nm

 

Types of HFI that the AAR 47 detects

Type 1-tracers

3-rockets

(Does NOT detect type 2, balls (no tracers))

 

https://quizlet.com/154429739/aar-47-flash-cards/


Edited by Heli
Link to comment
Share on other sites

 Share

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...