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What is the in-game difference between AIM-7M and MH?


Silvern

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I think I was wrong in my earlier comment - I had another play today and it seems like the AIM-7M doesn't loft, but the MH definitely does. Not sure how I got that mixed up before, thought I'd seen the M lofting but it doesn't look like it does (even with LOFT on the Hornet's HUD).

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RedKites video says the AIM-MH homes in on a radar jamming source. Think tiny HARM...

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Can both LOFT?

 

nope

 

AIM-7F - FLOOD navigation

AIM-7M - FLOOD navigation

AIM-7MH - LOFTed navigation

 

LOFT navigation

Command Guidance - In the guided launch mode, the aircraft Radar is used through the missile flight to send guidance updates to the missile. The target must be maintained in full track throughout the entire time of flight to intercept. Two flight profiles; Lofted and Conventional are available for selection. Lofted navigation provides additional range and terminal energy by sending the missile into thinner air prior to the terminal phase of flight. Conventional flight provides a shorter TOF and may be more appropriate for targets at closer ranges where energy conservation is not paramount.

 

LOFT Option - Some AAMs are capable of a LOFT maneuver which increases the aerodynamic range (Raero) of the missile by sending it up into thinner air and allowing it to conserve more energy to use during the terminal guidance phase where the majority of the missiles energy is usually lost. The downside is that lofting will usually take longer to strike the target. This LOFT (or not) behavior is accounted for in all of the various range calculations and indications for the seleted weapon prior to launch.

 

FLOOD navigation

FLOOD Illumination - Flood Illumination is a back-up mode that is used when ever a L&S LOS is not available or when the Radar cannot obtain STT in PDI. If the Radar uses the Flood antenna, the main antenna is lowered out of the way and the Radar is no longer able to receive target returns. The Flood antenna illumination pattern fills the HUD field of view and is centered at aircraft boresight. The Radar automatically enters FLOOD after the weapon is launched without a L&S target present.

Edited by Magot
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nope

 

AIM-7F - FLOOD navigation

AIM-7M - FLOOD navigation

AIM-7MH - LOFTed navigation

 

LOFT navigation

 

 

 

 

FLOOD navigation

 

Well, don’t think that’s correct. Flood mode can be used for any AIM-7 variant , it just uses the PDI illuminator to try to guide when a missile is fired with no target bugged. Applicable to any Sparrow.

 

The M should capable of loft, since it has an autopilot to enable it to fly optimal flight profiles, I.e Loft.

 

The MH seems to be a slightly upgraded M, though nobody seems too sure. Also Loftable.

 

We should also get the P version at some point, as far as I know this uses some sort of datalink to enable lock on after launch, which should be interesting.

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RedKites video says the AIM-MH homes in on a radar jamming source. Think tiny HARM...

 

I think it means HOJ - Home on Jam.. If a aircraft is using their jammer then the missile will guide itself to the signal.

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Loft is executed beyond a certain distance or time of flight. I don't recall which and what number that is for the 7MH, though IIRC you are also supposed to pitch up to 30 degrees to initiate it, AFAIK.

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Yes, but how does that reflect in-game?

I would also like to know that.

+1

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Don't you risk losing lock when you pitch up?
I wouldn't imagine so...why would you lose lock? Your bandit is over 15nm away and your radar has a 60 deg gimbal.

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How's the LOFT done actually? I did a shot at ~10nm (usually fire at less than 6nm only) with the MH in LOFT mode and it just went straight ahead the target as usual...

 

Loft is executed beyond a certain distance or time of flight. I don't recall which and what number that is for the 7MH, though IIRC you are also supposed to pitch up to 30 degrees to initiate it, AFAIK.

 

Assuming it’s the same as the eagle, IRL criteria to invoke lofted steering are:

  • STT track
  • rotate the nose 20 degress above the normal steering command
  • target must be within 20% of RMax1
  • TOF must be >10 seconds
  • target’s aspect greater than 45deg
  • ownship altitude <40kft
  • target altitude <60kft


Edited by SinusoidDelta
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I wouldn't imagine so...why would you lose lock? Your bandit is over 15nm away and your radar has a 60 deg gimbal.

 

How is that 60 degrees represented? When you say it's a 60 deg gimbal, Is that 60 deg from center upward and downward making it a 120 deg arc, or is it 30 deg up and 30 down making the total arc 60 deg?

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Assuming it’s the same as the eagle, IRL criteria to invoke lofted steering are:

  • STT track
  • rotate the nose 20 degress above the normal steering command
  • target must be within 20% of RMax1
  • TOF must be >10 seconds
  • target’s aspect greater than 45deg
  • ownship altitude <40kft
  • target altitude <60kft

Makes sense. And it would explain why flood mode doesn't loft since it has no idea range to target on launch.

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How is that 60 degrees represented? When you say it's a 60 deg gimbal, Is that 60 deg from center upward and downward making it a 120 deg arc, or is it 30 deg up and 30 down making the total arc 60 deg?

 

120 deg arc

60 deg up

60 down

 

Cool pic that shows how much angle she gets, this is the APG-65 and we have the APG-73.


Edited by David OC

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In Hornet Mechanization ASE steering dot provides LOFT cue.

Right but loft cue is just to prevent missile from having to turn to loft, maximizing energy. Missile still should loft even if you're not pointed the right way. It will just require a turn from the missile to go from launch vector to loft vector.

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Flood puts the missile in dogfight mode (programming internal to the missile) which does a whole bunch of set up for maneuvering and fusing that is probably not good for loft. Also, you cannot satisfy a TOF requirement for loft since range to target is not available.

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