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This was a common plot device in 1940s and 1950s space SciFi. In the 60s, there was some preliminary work at NASA on jetpack propulsion with the goal of testing

This was a common plot device in 1940s and 1950s space SciFi. In the 60s, there was some preliminary work at NASA on jetpack propulsion with the goal of testing out the concept on Gemini spacewalks (didn't actually happen until much, much later), and jet packs replaced guns as the preferred propulsory mechanism in SciFi space literature.

kryptiskt 4y ago
But the gas gun concept was actually realized and used on Gemini flights: https://en.wikipedia.org/wiki/Hand-held_maneuvering_unit https://en.wikipedia.org/wiki/Hand-held_maneuvering_unit