SEM

[mooshim]

This might seem trivial, but, no explanation can be found in the manual.

 

The following are available...

CLM

TRM

TLT

or NONE

 

Does anyone know--since escape occurs after weapon release--what the benefits are of each?

 

How does a pilot decide?

 

Many thanks for anyone who can shed some light.

 

Moosh

[Frederf]

The setting affects what the FCC believes you are going to do after weapon release. If the FCC is told that you will climb after release then it will let you release lower before it gives the X "Don't do it man, you'll blow yourself up!" marker.

 

http://forums.eagle.ru/showthread.php?t=59812

http://www.hawgsmoke.com/assets/literature/Hawgsmoke%20Mils.pdf

Edited December 21, 2010 by Frederf

[mooshim]

Yes, Thanks.

 

I was looking at that thread before I posted and am still a bit confused.

 

So it really just affects the indications on the HUD subsequent to release.

 

Is that right?

 

Thanks for the response.

[BlueRidgeDx]

Yes, the SEM setting drives the IFFCC MRC/MRS symbology to ensure safe separation from fragmentation.

 

I didn't see a complete list of SEM's in the other threads, so here's a quick look at the ones available:

 

NONE - Selecting NONE results in the IFFCC not calculating fragmentation.

 

CLM - (Climbing) After release, start a 4g wings-level pull within 2 seconds to. Power to MAX as the nose comes through the horizon, and continue pulling to 20deg nose-up. Reduce g until 30deg nose-up is achieved.

 

TRN - (Turning) After release, go to MAX power and initiate a 4g loaded roll to 60deg of bank. Maintain 4g while reducing pitch attitude to 5deg nose-low, maintaining the descending turn for at least 60deg of heading change.

 

TLT - (Turning, Level Turn) After release, select MAX power and initiate a 4g wings-level pull. Nearing the horizon, initiate a loaded roll and maintain 4g for at least 60deg of heading change.

 

LST - (Level Straight Through) After release, fly a level, constant speed, non-turning flight path for the the longest weapon TOF plus 3 seconds. (I don't think this is selectable in the A-10)