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DARPA funds radical "DiscoCopter" concept
Washington, USA - A high level performance helicopter
The Pentagon scientists have elaborated a new radical rotary wing project: the "DiscRotor". The idea of the "DiscRotor" is that of a helicopter with a large circular saucer-like hub and ordinary rotor blades extending out from it. The disco-copter takes off, lands and hovers just as an ordinary whirlybird does; but at high speed the blades retract into the central hub disc, which continues to rotate...
AVIONEWS - World Aeronautical Press Agency - 1093985
AVIONEWS - World Aeronautical Press Agency
AVIONEWS - World Aeronautical Press Agency