In the 1480s, Italian Renaissance artist and inventor Leonardo da Vinci came up with an ingenious design for an “aerial screw.” A rotor in the shape of a helix measuring about 13 feet in diameter, the ...
A lot of personal flying machines are in the works right now, but this one from Washington-based startup Zeva Aero surely features one of the most extraordinary designs yet. The Zeva Zero aircraft ...
NASMRB copy 39088001801703 bound in publisher's red cloth. National Air and Space Museum-Library stamp on t.p. Contents Ch. 1. Evolution of the two-surface flying machine -- ch. 2. Theory development ...
A quadcopter drone that uses ancient technology instead of modern propellers made a huge impression at the recent Transformative Vertical Flight conference. University of Maryland graduate student ...
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