摘要:
Une tuyère de poussée pour avions munis de moteurs à réaction, notamment pour commander le vecteur de poussée latérale, comprend au moins deux volets (8, 12) actionnés par des organes d'ajustement similaires à des leviers montés à leur extrémité en amont du courant. Les volets sont agencés entre des parois (22, 23) essentiellement parallèles à l'axe de la tuyère d'un logement rectangulaire de la tuyère, de manière à pivoter simultanément autour d'axes de rotation transversaux à l'axe (20) de la tuyère avec des angles de rotation différents. On obtient ainsi avec un profil uniformément convergent de la tuyère une section transversale entre les volets (8, 12) qui est plus étroite du côté sortie. La première extrémité des organes d'ajustement (28, 29) similaires à des leviers enclenche les extrémités des volets en aval du courant et leurs deuxièmes extrémités sont mutuellement couplées de manière mobile de façon à se déplacer dans une voie de guidage (30) courbée de manière à produire des angles de rotation différents toujours pour chaque volet. Une ou plusieurs sections transversales plus étroites peuvent être maintenues constantes ou peuvent être modifiées en fonction de l'angle de déviation du jet.
摘要:
Two tail control surfaces operable doubly as thrust-deflectng vanes are rotatably supported on respective lateral sides of a jet engine of a V/STOL aircraft. Each tail surface (8) can be actuated to rotate about an axis parallel to the engine axis (9) and also to rotate about an axis perpendicular to the engine axis. The tail surfaces can be placed in outer positions on respective lateral sides of the engine for high-speed flight to function as stabilizer surfaces and to be placed within the engine exhaust gas stream and, moreover, to be placed in an inclined state relative thereto thereby to deflect the stream downward for slow-speed or hovering flight.
摘要:
A short takeoff and landing aircraft (10) and vertical/short takeoff and landing aircraft (10), having upper surface blowing engines (12, 14) on gull-shaped wings (24, 26) which may be tilted and translated by a variable incidence translation device (52). The translation means (80, 62, 64) is adapted to provide center of gravity travel trim and critical engine out moment trim. Thrust vectoring of the upper surface blowing engines is accomplished by a combination of the upper surface blowing and wing tilt, and vectoring of lower lift/boost engines (124, 126) is accomplished by swiveling nozzles (138, 140). Critical engine out lateral trim is accomplished by a combination of airplane bank and differential vectoring by the lower lift/boost engines (124, 126).
摘要:
A fluid vectoring nozzle (10) comprises flow vectoring means suitable for selectively producing a fluid dynamic throat (28) in the nozzle(1 0) in a plane oblique to the axis of the nozzle (10), such that in operation fluid flow passing through the throat (28) is rotated about an axis parallel to and coincident with the plane of the throat (28). That is to say, the present invention comprises flow vectoring means suitable for selectively producing a fluid dynamic throat (28) in the nozzle (10) in a plane oblique to the axis of the nozzle (10), such that, in operation, fluid passing through the fluid dynamic throat (28) is turned towards an angle perpendicular to the plane of the throat (28). Fluid injection means are provided to inject a control fluid (26) into the nozzle (10) through a perforate region provided in at least one nozzle wall (23), thereby generating a fluid dynamic restriction (24) which initates the formation of the fluid dynamic throat (28).
摘要:
Methods and apparatus for sealing variable area fan nozzles (214) of jet engines (200) are disclosed. An apparatus in accordance with the teachings of this disclosure includes a frame and a seal (218) to be coupled to the frame. The seal to enclose petals (216) of a variable area fan nozzle (214) to substantially prevent airflow between the petals.
摘要:
The invention relates to aviation technology, specifically to vertical take-off and landing aircraft. The vertical take-off and landing aircraft comprises two turbines, the lower of which is of plate-like shape, and the upper is of flat or plate-like shape. Each turbine comprises a reactive power plant. The body of each turbine is mounted on a metallic disc connected to a vertical shaft of the aircraft, and is equipped with vanes. The vanes are mounted such that the position thereof can be changed. The aircraft can comprise intermediate turbines which are mounted between the upper and lower turbine and are flat or plate-like. The reactive power plant of each turbine comprises an air engine and receivers which are connected to a compressor. The body of each turbine is metallic and comprises two rings, one of which is connected to the disc, and also radial struts which are mounted along the perimeter of the turbine body and are connected to the rings and vanes. The vanes are mounted in a single row along the perimeter of the body or are arranged in a single tier. The result is an increase in the reliability and economy of the aircraft, and the possibility of the latter moving vertically, horizontally or at any inclination.
摘要:
An aircraft lift transducer may include a vane, actuator, an LC circuit, and a processor. The vane may be positioned on the leading edge of a wing of the aircraft, where the angle defined by the chord of the wing and the vane changes when the aircraft angle of attack changes. The actuator may be associated with the vane and change position when the angle defined by the vane and the chord changes. The LC circuit may include an induction coil spaced from the actuator and an oscillator. The oscillation frequency of the LC circuit may change when the position of the actuator changes. The processor may receive the change in the oscillation frequency and may determine a corresponding change in an available lift of the aircraft.
摘要:
An aircraft includes: ailerons (1,2); a turbofan engine (3) comprising a high-temp duct (4) with an openable/ closable propelling nozzle (5), and a low-temp duct (6) with an openable/closable propelling nozzle (7); a high-temp bypass duct (9) comprising an openable/closable inlet (8) connected to the high-temp duct(4), an outer wall(10) and a rectangle outlet(12) with a height-to-width ratio smaller than 0.1; a low-temp bypass duct (15) comprising an openable/closable inlet (14) connected to the low-temp duct (7), an outer wall (16), an inner wall (17) and a rectangle outlet (19) with a height-to-width ratio smaller than 0.1. During vertical take-off/lading, closing the propelling nozzles (5, 7) of turbofan engine (3), and opening the inlets (8,14) of high-temp and low-temp bypass ducts(9,15), low-temp planar air jet (20) is cause to flow over upper surface of the aircraft, thereby generating lift and no air flow over lower one.