ARMs

Learning objectives

1. Know how to use HAD
2. Know how to use WPN page
   1. Know when and how to use POS (EOM, PB, RUK)
   2. Know when and how to use HAS

HAD

Presents a map, similar to the HSD, but show different emitting radars on it. Lock on a radar and fire.

Biggest issue is co-located radars that overlap. Zooming in can sometimes help, but more often, switch to a HAS shot to surgically target a radar.

WPN Modes

HARM flight profiles

POS

POS will always slave to a selected steerpoint; no steerpoint means no shot in POS mode

• Manually select steerpoints or threat steers in HSD or jump to pre-planned target steerpoints using UFC
• Alternately, set mark points as references to radars to use POS mode
• In POS, you can use EOM (very fine control – you know exactly where the target is and it is on the current steerpoint), PB (wider control – the target is close to a threat steer point), or RUK (extremely wide control – the target is around your current position and will lock on to the first thing it sees). You still need a steerpoint, remember.
• RUK is LOAL, HAS is LOBL.
• RUK, PB, EOM are all three POS modes and all POS modes are steerpoint-directed in azimuth. The difference is in end game seeker activity and assumed range only. EOM and PB assume range = range to steerpoint. RUK assumes range = maximum.
  • EOM = point
  • PB = area
  • RUK = lane
• RUK is for painting a long, wide stripe of ground with HARM coverage. PB is for a floodlight on an area. EOM is a laser pointer.

Tips

If you want to use POS shots, you need a reference steerpoint. If you detect a pop-up SAM, here is how you can set a steerpoint manually so you can still use POS:

1. Lock the SAM target up on the FCR.
2. Press CZ to zero out the cursor and remove any offset.
3. Press ICP 7 (MARK) and make sure DED shows FCR.
4. TMS Up to create a markpoint at your cursor.
5. Press ICP 0 to automatically go to the steerpoint you just added.
6. Select EOM for your POS shot to get the narrowest cone; you locked the target up so you don't need the wide PB cone for your shot.
7. Fire when in range.

HAS

HARM as a Sensor allows you to lock onto a radar manually and have the ARM track that signal.

1. Switch to WPN
2. Switch to HAS
3. Cycle tables to the one with the radar you want to track
4. Lock up radar with cursor
5. Wait until RDY displays
6. Put the target in the box on the HUD
7. Estimate if range is adequate
8. Fire

Weapons

AGM-88 ARM

Standard ARM.

Range: 25nm

AGM-45B Shrike

A Vietnam-era ARM. Low reliability.

Range: 10nm

Tips to use effectively:

1. Get to 20,000-30,000 feet
2. Switch to WPN->HAS and select proper table
3. TMS up on correct SAM Radar
4. Wait for a SAM launch
5. Aim your FPM at the smoke trail; this will bore-sight your Shrike on the target and is how these weapons were employed historically.
6. Fire
7. Defend while closing to ensure radar stays on

ALARM

Parachute ARM carried by Tornado and Jaguar.

Range: 24nm

AGM-78 Standard

Old school ARM.

Range: 30nm

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