These bizarre aircraft offered a glimpse into an unbelievable future for aviation, even if some could barely make it off the ground.
From strange aircraft with an incredibly impractical vertical takeoff to a terror-inducing bicycle-helicopter hybrid.
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It's hard to believe people thought some of these were good enough ideas to make into working, full-sized prototypes but alas - here we are years later, thankful that we travel in a time where aviation is a less curios and harrowing experience.
Check out the video above for a roundup of these outlandish aircraft.
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You can see more of each plane below:
Lockheed XFV Salmon
Snecma C-450 Coleoptere
Blohm & Voss BV 141
Avro Canada VZ-9 Avrocar
Aero Spacelines Super Guppy
Lunar Landing Research Vehicle