View source for Category:Asboth AH-4

[[Image: Vlcsnap-2026-01-11-15h37m47s598.jpg|thumb|right|350px| Asboth AH-4.]]

Oszkár Asboth (1891-1960) was an Hungarian aviation engineer sometimes credited with the invention of the helicopter. Between 1928 and 1931, Asboth tested various contra-rotating co-axial two-bladed rotors only 4.35m in diameter.
Asboth AH-4 used counter-rotating coaxial main rotors powered by a 110hp Clerget rotary engine with multiple hinged vanes in the rotor downwash. Control was very poor, but by mid-1930 the aircraft reportedly attained an altitude of 30m and covered 3.2km at about 19km/h.

This page lists all films that feature the Asboth AH-4.


== See also ==
*[https://www.aviastar.org/helicopters_eng/asboth.php Asboth AH-4 at aviastar.org]

[[Category:Aircraft List]]