Helicopter?
- Topicstarter Rsv Mille
- Startdatum
prop-er
Forum veteraan
Dat konden ze in 1947 ook al....
"At Boeing Field in Seattle, Maurice Ramme conducts the first tethered flight with the Hoppi-Copter 102. The fully open single-seater has two co-axial rotors of 4.88 m diameter and is powered by a two-cylinder two-stroke engine. It is controlled by a single hanging universal stick. Raising and lowering the handle controls collective pitch and twisting causes differential collective pitch for yaw control. Hoppi-Copter president and designer Horace T. Pentecost hopes to offer his "Motor-Cycle of the Sky" for less than $1000"
Walter H. Righter (1905 - 1982) - Aviation Engine Pioneer
"At Boeing Field in Seattle, Maurice Ramme conducts the first tethered flight with the Hoppi-Copter 102. The fully open single-seater has two co-axial rotors of 4.88 m diameter and is powered by a two-cylinder two-stroke engine. It is controlled by a single hanging universal stick. Raising and lowering the handle controls collective pitch and twisting causes differential collective pitch for yaw control. Hoppi-Copter president and designer Horace T. Pentecost hopes to offer his "Motor-Cycle of the Sky" for less than $1000"
Walter H. Righter (1905 - 1982) - Aviation Engine Pioneer