Expedition to Mars with space glider will take place in 1971



Philip Bono : Space Vehicle Design Specialist
"Bono, in common with many Mars exploration enthusiasts of the early 1960s, optimistically targeted his expedition for the favorable 1971 Earth-Mars transfer opportunity, when the energy required to reach Mars would be at a minimum. He envisioned a manned Mars spacecraft which would outwardly have resembled the X-20A Dyna-Soar single-seat orbital glider that the company was developing for the U.S. Air Force at the time."


http://www.wired.com/wiredscience/2012/10/dyna-soars-martian-cousin-bonos-mars-glider-1960/

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