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The Lunar Landing Training Vehicle, and its predecessor, the Lunar Landing Research Vehicle, were developed by NASA in the early 1960s to prepare astronauts for the first mission to the moon. Built by Bell Aerosystems, the vehicles featured a GE CF-700-2V jet engine that pointed downward to cancel out 5/6th of the vehicle’s weight. Two 2250 Newton hydrogen peroxide lift rockets were also used to help simulate lunar conditions.

Three out of the five that were created crashed during training, with all of the astronauts, including Neil Armstrong in the first crash, ejecting safely. According to Armstrong, the Lunar Module flew better than the test vehicles, but the test vehicles were vital to the success of the moon landing. In his own words, “What the LLTV gave you was not so much the seat-of-the-pants dynamics as the real-world visual. That and the fact that, if you make a mistake, you can’t hit the reset button.”

Read more about the vehicles here. GIFs from NASA’s Dryden Flight Research Center / YouTube.

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Explore hit the reset button GIFs