Virtual AGC
The Virtual AGC code simulates the hardware of the real Apollo Guidance Computer, and can run the same software as was used on a real Apollo mission.
The Virtual AGC or vAGC uses software that is believed to have flown on actual missions. Most missions in Project Apollo use Colossus 1A (rev249) otherwise known as Colossus249. It is believed that this software was used for the Apollo 9 mission.
Original Documentation
Some original Apollo-era documentation which may be useful for understanding the operation of the Virtual AGC and the Colossus and Luminary software:
- Apollo 15 Delco Manual -- with information on AGC usage.
- Apollo experience report: Guidance and control systems - Digital autopilot design development
Pre Launch and Service Programs
Programs 00-09 are reserved for Prelaunch and Service programs.
Program 00: CMC Idiling also known as "POOH" in astronaut terminololigy. This is a default state for the AGC. It indicates to the crew the AGC is not ingaged in any routines or programs that require crew condideration. It maintains the GNCS in a condition where manual attitude manuvers can be made by the crew with minimal concern. Finally, it maintains the CMC in a condition of readiness for entry into other programs. Whenever you are not engagesd in other programs the AGC should into this state called "Go the POOH"
Program 01: Prelaunch Initialization. This program sets up the CMC and GNCS for preperation for launch. It torques the IMU for launch oreintation based on the spacecraft position and launch azimuth. This program then automatically starts Program 02.
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