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Hi,
also from the book, Romanian Aeronautical Constructions,the engineer Cristea
Constantinescu designed the C.O.1,an autogyro-helicopter with a pusher air-
screw and two co-axial rotors in 1934,he continued by C.O.2,a modern helicopter
by its time,design began at 1938 but never completed.
also from the book, Romanian Aeronautical Constructions,the engineer Cristea
Constantinescu designed the C.O.1,an autogyro-helicopter with a pusher air-
screw and two co-axial rotors in 1934,he continued by C.O.2,a modern helicopter
by its time,design began at 1938 but never completed.
