GB378641A - Improvements in or relating to flying machines - Google Patents

Abstract

378,641. Aircraft with combined rotary and reciprocating wing systems; linkages. KORWIN, G. J. DE, La Madeleine, Cannes, France. Aug. 10, 1931, No. 22603. Convention date, Aug. 21, 1930. [Classes 4 and 114.] In a flying ma. chine comprising wing surfaces freely rotatable about a vertical axis and in which each wing is free to swing about a horizontal axis, the wing surfaces are reciprocated along their vertical axis, the resulting reactions from the air on the wings causing all the wing surfaces to revolve in the same direction about the vertical axis. Fig. 10 shows a flying machine having two sets of four-bladed rotors, with blades of aerofoil section, which are oppositely reciprocated on a vertical column E by means of an engine G carried in a body F. The blades which are arranged to be flexible transversely and stiff longitudinally are carried on tubes B, Fig. 3, socketed in rings C freely rotatable on sliders D<1>, D2. The engine drives a three-armed crank J through reduction gearing I. Connected to the crank J are rods L<1>, L<2> coupled to the slider D<2> . and a rod K coupled to the slider D<1>. Stops are provided to limit swinging movements of the wings, these comprising rollers M, Fig. 3, mounted on the wing roots and arranged to contact with cam rings N mounted on the sliders by means of three spaced links O which may be collectively or independently adjusted in length by the pilot through flexible, pneumatic, hydraulic, electrical or other transmission, to alter the position of the ring N and hence to govern the movements of the wing. A second stop roller M<1> may be connected to the roller M by a link m and arranged to contact with ring N on upward movement of the wing. Lateral or longitudinal control may be effected by non-uniform adjustment of the link O. A propelling engine R driving an airscrew Y may be fitted in the body F and be mounted in a swinging trunnion bearing S. Handles T on the engine permit of swinging it in any desired direction within fixed limits to turn or tilt the flying machine. More than two sets of blades may be mounted on the same column. Fig. 5 shows an arrangement wherein four groups of wings are used mounted on two columns E spaced from the body. The reciprocating mechanism which may comprise eccentrics Q3, Q<4> is housed in columns E and is driven by shafts K<5>, K<6> carried in tubular members connecting the columns E with a central column on the body to which columns E are braced. Shafts K<5>, K<6> are driven through shaft and bevel gearing from an engine G. The driving mechanism may be such as to cause rapid downward movement of the wings and a relatively slow upstroke. Two such arrangements are shown in Figs. 12 and 13. In the arrangement shown in Fig. 13, the speed of the point P may be from two to three times as great on the down as on the up stroke. A spring U may be compressed on the down stroke and assist in raising the wing on the up stroke.