The mechanism of gravity, closed systems of speed alteration (and) Insect flight, seen from inside the body of the insect(and) The helicopter as a potential winner (and) "U-Kontrol III", an improved airplane driven by human power (and) "Polistes", rubber car with jet propulsion (and) "Scotch- Gambit", the design of a large fast flying boat.
Publisher: Marzona
Published: 1975
Place of publication: Bielefeld
Language: eng