Hoppi-Copter
From Infogalactic: the planetary knowledge core
The Hoppi-Copter was a functional backpack helicopter developed by Hoppi-Copters Inc. founded by Horace T. Pentecost in the 1940s.[1] The original Hoppi-Copter consisted of two contra-rotating rotors on a pole attached to a motorized backpack.[2] Although it was capable of flight, it was extremely hard to control.[3]
Later prototypes of the Hoppi-Copter included versions with the pilot in a sitting position, and were in effect miniature one-man helicopters of a more conventional design.[1] None were ever adopted commercially.[3]
Variants
- Pentecost HX-1 Hoppi-Copter
- Hoppi-copter 101
- Hoppi-copter 102
- Hoppi-copter Firefly
References
See also
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