ApolloInvestigation

The semi-automatic program P66 was used to move the lunar module over the lunar surface. The AGC was controlling the thrust of the main engine so to maintain the lunar module over the lunar surface, while the crew was using the RCS to move the lunar module in the desired direction. The AGC also had to take into accound orders from the crew to move the lunar module up and down, so that they could choose at what altitude the lunar module had to move. In a previous video, we have already seen that the AGC had no way to send a thrust control command to the LGC, which means that there already is a problem with this program, for the AGC could not send what it has calculated to the LGC. In fact, I show that the AGC does not even correctly calculate the necessary thrust in this program, and, still worse (or better), what it does in this program is outright aberrant. Link the code of the program P66: https://www.ibiblio.org/apollo/listings/LUM99R2/THROTTLE_CONTROL_ROUTINES.agc.html Link to the instruction set of the AGC: http://www.ibiblio.org/apollo/assembly_language_manual.html#The_Interpreter_vs._the_CPU Link to the technical manual of the lunar module: http://www.hq.nasa.gov/alsj/LM10HandbookVol1.pdf

This video talks about the program of the master ignition, baptised "Burn Baby Burn", the program which is called at the beginning of the powered descent, and which is supposed to put the main engine at full thrust to make the first phase of the powered descent, the braking phase. I show that this program does not really fulfill this function, because, if it effectively sets the engine on, it does not put it at full thrust like it normally should, for the simple reason that the AGC has no control on the thrust of the engine, and I explain why. Moreover this program also contains errors which have no excuse. This completely discredits the powered descent. Link to the program "Burn Baby Burn" of the AGC: https://www.ibiblio.org/apollo/listings/LUM99R2/BURN,_BABY,_BURN_--_MASTER_IGNITION_ROUTINE.agc.html Link to the technical manual of the lunar modue: http://www.hq.nasa.gov/alsj/LM10HandbookVol1.pdf https://github.com/chrislgarry/Apollo-11/blob/master/Luminary099/INPUT_OUTPUT_CHANNEL_BIT_DESCRIPTIONS.agc