초록 ▼

A system for deterring subsonic airplane stall-spin entry wherein a highly swept wing tip mounted lifting surface panel 18 (FIGS. 1-3) is attached to the tip of a main wing panel 14 and provides a stabilizing vortex lift to the aircraft at an angle of attack slightly greater than the normal angle of

A system for deterring subsonic airplane stall-spin entry wherein a highly swept wing tip mounted lifting surface panel 18 (FIGS. 1-3) is attached to the tip of a main wing panel 14 and provides a stabilizing vortex lift to the aircraft at an angle of attack slightly greater than the normal angle of attack used in climbing flight. This vortex lift enhances roll damping at high angles of attack and serves to prevent airplane stall-spin entry. FIG. 4 shows an alternate form of the invention wherein the wing tip mounted lifting surface panel 48 is provided with a forward highly swept leading edge. For sharp leading edges a leading edge sweep for the wing tip mounted lifting surfaces is approximately forty-five degrees while, for blunt leading edge surfaces, a greater degree of sweep is employed to generate the vortex lift.

대표청구항 ▼

A passive system for deterring stall-spin entry of a subsonic aircraft comprising, in combination: an aircraft wing having (1) a main inboard wing panel extending from an aircraft fuselage and provided with a root chord attached to the aircraft fuselage and a tip chord having a reduced length relati

A passive system for deterring stall-spin entry of a subsonic aircraft comprising, in combination: an aircraft wing having (1) a main inboard wing panel extending from an aircraft fuselage and provided with a root chord attached to the aircraft fuselage and a tip chord having a reduced length relative to said root chord, and (2) A wing tip lifting surface panel having a root chord rigidly attached to the tip chord of said main inboard wing panel and in the same wing plane as said main wing panel, said wing tip lifting surface panel having a leading edge sweep and a trailing edge sweep and terminating in a tip chord length a fraction of the root chord length thereof.