Framed Apollo 7 Photo Collage Of Crew Return On Recovery Ship Essex. Crew Signed for Sale

Framed Apollo 7 Photo Collage Of Crew Return On Recovery Ship Essex. Crew Signed For Sale

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Framed Apollo 7 Photo Collage Of Crew Return On Recovery Ship Essex. Crew Signed:
$1000.00

This framed Apollo 7 photo collage captures a historic moment in space exploration. It features the crew's return on the recovery ship Essex, signed and inscribed to J. Halcombe "Hal" Laning Jr. by the crew members.

Hal Laning worked in the MIT Draper Lab, with Richard H. Battin, to develop a scheme for doing onboard navigation on the Apollo program's command/service module guidance system. He designed the Executive and Waitlist operating system for the LGC (Lunar Module Guidance Computer) in the mid 1960s; he built it up from scratch with no examples to guide him, and the design is still valid. The allocation of functions among a sensible number of asynchronous processes, under control of a rate and priority-driven preemptive executive, still represents the state of the art in real-time GN&C computers for spacecraft. His design saved the Apollo 11 landing mission when the rendezvous radar interface program began using more register core sets and "Vector Accumulator" areas than were physically available in memory, causing the infamous 1201 and 1202 errors. Had it not been for Laning's design the landing would have been aborted for lack of a stable guidance computer.[8]