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SRAM Programming
Tue Nov 12, 2013 16:52

The SRAM (AGM-69/A) was usually programmed, using a tape reader, which loaded the targetting information into the Master Data Computer (MDC). Aircraft geo-position data was fed to the MDC through the Signal Data Distribution Programmer (SDDP), to let the SRAMs know where the aircraft thought it was. Remember that this was well before any GPS navigation systems, so this aircraft location data was compared to where the SRAM thought it was, and where the target was in relation to the SRAM. If the right-seater had selected SRAM AUTO mode, then the SRAM would continuously calculate its range to target, and the missile would consider its options (direct line-of-sight, semi-ballistic, or ballistic trajectory). Once in range, the MDC would display the SAIR (Safe In Range) light, to indicate that the missile was inside the launch envelope. AUTO mode would open the weapons bay doors if necessary and launch the SRAM, assuming all the other safety interlocks were met (i.e. Nuclear Consent Switch, Station Selected on the SCP, Airspeed/altitude minimums, etc.).

  • Re: SRAM "Flight Modes"Anonymous, Fri Nov 8 04:52
    - Could each missile be programmed a certain target and a certain flight profile? - When did the missile's countdown set in and how long was it? - Had the pilot's wpn rel btn to be pressed for the... more
    • Re: SRAM "Flight Modes"Tom, Tue Feb 18 07:39
      Would like to come back again to my question with regard to the flight profiles of the SRAM. In the book F-111: Success in Action just these flight profiles are mentioned on p.67: Inertial, Semi -... more
    • SRAM Programming — Jim, Tue Nov 12 16:52
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