Project Orion.
A serious attempt to design, circa 1963-4, a similar spacecraft for NASA interplanetary missions. The image below shows a miniature flying prototype
of the Orion vehicle - built by General Atomic, a company founded by Teller's protege Frederick de Hoffmann - which made a successful flight to an
altitude of about 100 meters in November 1959, during which it ejected several small conventional explosive charges in rapid succession.
Orion "Putt-Putt" test vehicle in National Air and Space Museum
By the early 1960s, General Atomic had advanced the Orion concept to studies of a vehicle capable of sending a crewed expedition to Mars. This vehicle
was sized to the diameter of the Saturn V rocket and was to be launched in several sections and assembled in Earth orbit. A Mars mission of several
months duration with a crew of eight was planned. Landing on Mars was to be accomplished by an advanced lifting-body vehicle
Mars Orion during nuclear boost
Mars Orion schematic diagram
Mechanism to eject "pulse units" (small nuclear bombs)
Nuclear "pulse unit" of low kiloton yield. Hundreds of these bombs would be used to accelerate Orion to interplanetary speeds
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