In the early 1960s, General Electric engineers devised a solution for the most terrifying scenario an astronaut could face: being stranded in orbit with no way to return to Earth. This proposed emergency system, originally named Man Out Of Space Easiest before being rebranded as Manned Orbital Operations Safety Equipment, was a suitcase-sized container holding a plastic bag, a rocket motor, and enough polyurethane foam to turn a human into a blunt cone. The concept was simple yet bizarre. An astronaut would climb into a long PET film bag, fill it with expanding foam, and ignite a twin-nozzle rocket motor to slow their orbital speed. The foam-filled bag would then act as an ablative heat shield during reentry, protecting the occupant from the intense friction of the atmosphere. Once the air became dense enough, a parachute would deploy to slow the descent, and the foam would cushion the final impact, serving as both a shock absorber and a flotation device if the landing occurred in water. Despite its ingenuity, the system was never adopted by NASA or the U.S. Air Force, remaining a quiet footnote in space history until decades later when it resurfaced as a curiosity of Cold War engineering.
Engineering a Human Reentry
The technical specifications of the MOOSE system reveal a design that prioritized survival over comfort or safety. The core of the device was a small twin-nozzle rocket motor capable of deorbiting an astronaut, followed by a PET film bag that stretched long enough to enclose the human figure completely. Inside the bag, two pressurized canisters would release polyurethane foam, which expanded to fill the space and encase the astronaut in a rigid, heat-resistant shell. The bag was shaped like a blunt cone, with the astronaut embedded in the base and facing away from the apex, ensuring that the rocket motor protruded from the rear to provide thrust. During reentry, the foam acted as insulation, absorbing the heat generated by atmospheric friction. The system included a parachute that automatically deployed at a specific altitude, slowing the fall to a survivable speed. A radio beacon was integrated to guide rescue teams to the landing site, while the foam itself provided flotation if the astronaut landed in water. General Electric conducted preliminary tests on various components, including flying heat shield materials on a Mercury mission and inflating foam-filled bags with human subjects embedded inside to simulate the experience.Testing the Limits of Survival
General Electric did not leave the MOOSE system to theory alone. Engineers performed a series of rigorous tests to validate the feasibility of the design, including flying samples of heat shield material on a Mercury mission to observe their performance in actual space conditions. They also conducted ground-based experiments where human subjects were embedded in foam-filled bags and dropped from short distances to simulate the impact of landing. These tests were designed to ensure that the foam could provide sufficient cushioning and that the parachute system would function correctly under extreme conditions. The U.S. Air Force's Captain Joe Kittinger, who made history in August 1960 by freefalling from a balloon at an altitude of 102,800 feet, provided additional data on the feasibility of extreme parachuting. His record-breaking jump demonstrated that humans could survive high-altitude descents with the right equipment, lending credibility to the MOOSE concept. Despite these efforts, the system remained an extreme emergency measure, intended only for situations where no other option for returning an astronaut to Earth existed. The likelihood of survival was low, and the maneuver was never considered safe or enticing enough for widespread adoption.