Triangular-wing glider
AssigneeSociete d'Equipements Divers Pour la Population Civile et l'Aviation Sedpa
InventorPaul Marcel Edmond Decroix
Life of this patent
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Abstract
A light triangular-wing glider, comprises an auxiliary wing or stabilizer, arranged in an average plane approximately parallel to that of the principal wing, in front and above the latter. This auxiliary wing is flexible, principally constituted from a material such as cloth and capable of taking a curvilinear shape under the influence of the relative airstream. The pilot can thereby modify the angle of attack of the whole of the glider and notably pull the craft out of a dive.
Claims3
Light triangular wing glider having a center of gravity and a vertical longitudinal middle plane, said glider comprising a principal wing having a frame and being in the form of a forward pointing triangle, a pilot's suspension harness under said principal wing, an auxiliary flexible wing positioned in front of said principal wing;
- said auxiliary flexible wing consisting essentially of a piece of cloth-like material essentially symmetrical with respect to said vertical longitudinal middle plane, a central rigid rod fastened to said piece of cloth-like material along its line of symmetry, and guys secured to side edges of said piece of cloth-like material for tensioning the cloth-like material, said glider including further means for maintaining said auxiliary wing in an average plane approximately parallel to the plane of said principal wing;
- and means for varying the position of the average plane of said auxiliary wing with respect to the plane of attack of the principal wing whereby the angle of attack of the whole glider can be modified and the glider can be pulled out of a dive.
Light triangular wing glider having a center of gravity and a vertical longitudinal middle plane, said glider comprising a principal wing having a frame and being in the form of a forward pointing triangle, a pilot's suspension harness under said principal wing, an auxiliary flexible wing positioned in front of said principal wing;
- said auxiliary flexible wing consisting essentially of a piece of cloth-like material essentially symmetrical with repsect to said vertical longitudinal middle plane, a central rigid rod fastened to said piece of cloth-like material along its line of symmetry, said glider including further means for maintaining said auxiliary wing in an average plane approximately parallel to the plane of said principal wing;
- and means for varying the position of the average plane of said auxiliary wing with respect to the plane of attack of the principal wing whereby the angle of attack of the whole glider can be modified and the glider can be pulled out of a dive, said means for varying the position of the average plane of said auxiliary wing includes means hingedly mounting said central rod at the front of said central rod on an extension of the frame of said principal wing for movement in said vertical longitudinal middle plane, and means connecting a rear end of said rod to an angle of attack control device placed at the disposal of the pilot, whereby a pilot can move said rod in said vertical longitudinal middle plane, means mounting said pilot suspension harness for swinging movement, and said angle of attack control device including a bar positioned in front of a pilot position and fast to said pilot's suspension harness whereby the auto-stabilizing effect of the movement of said center of gravity of the glider is amplified during the swinging movement of a pilot borne by said harness.
Dependencies are inferred from the claim text.