Abstract:
An aircraft includes a fuselage and at least one primary wing having an upper surface, at least one recess in the upper surface and at least one conduit in fluid communication with the at least one recess. At least one ejector is disposed within the at least one recess and is configured to receive compressed air via the at least one conduit.
Abstract:
An unmanned high altitude aircraft operating above 15 km with transmitting and/or receiving antennas, enclosed or more than half enclosed on a projected area basis normal to the plane of the antenna (s), in a wing structure where the chord length of the wing section enclosing the phased arrays or horn antennas is at least 30 percent greater than the mean wing chord length, and the wing surface adjacent to the antenna(s) in the path of the electromagnetic radiation being received or transmitted by the antenna (s) is substantially composed of material relatively transparent to this radiation.
Abstract:
The invention relates to a wing (1) for generating lift and comprises a trailing edge (5), a leading edge (3), an inner end (7), an outer end (9), a top surface (10) and a bottom surface (12). The wing comprises an aerofoil with a chord line and a span direction. The leading edge comprises a kink (21) between the inner (7) end and the outer end (9). The leading edge comprises a forward sweep part between the inner end and the kink extending towards the kink presenting an angle (a) relative to the span direction. The leading edge comprises a backward sweep part (35) between the kink and the outer end extending from the kink presenting an angle (β) relative to the span direction. The top surface comprises a flow control means (30) for controlling the lift at least partly located between a leading edge part between the kink and the outer end and located between the leading edge and the trailing edge.
Abstract:
Самолёт на своих правом (2) и левом (3) полукрыльях снабжен правой (6) и левой (7) законцовками. Законцовки (6) и (7) устанавливается на концевых частях крыла, в частности, на торцевой нервюре крыла (14) и включают генератор вихря (15), вырабатывающий при движении самолёта из набегающего наружного воздуха (16) вихревой поток (17) противоположного по направлению вращения возникающему на конце крыла концевому вихрю (18), и примыкающий к нему кожух (19), выполненный в виде тонко ст енной поверхности, простирающейся вдоль концевой хорды крыла. Генератор вихря (15) выполнен в виде пустотелой говдолы (20) с входным устройством (21) в виде конфузора и, вихревой камерой (22). в виде диффузор а с закручивающим устройством . На внутренней поверхности диффузора установлено закручивающее устройство (25), выполненное в виде тонкостенных направляющих лопаток. При этом, кожух, выполнен с внутренней поверхностью постоянного радиуса по всей своей длине, а диффузор вихревой камеры выполнен с углом расхождения равным 3 ÷ 12°. Изобретение может быть использовано в конструкции пассажирских, транспортных самолётов для повышения их пассажирской и транспортной эффективности, на лопастях вертолётов, воздушных винтов, лопастей гидромашин для повышения их эффективности .
Abstract:
An airplane having a fuselage (11), opposed main wings (12), and blunt-leading-edge raked wingtips (8) is provided. Each main wing includes an outboard end (9) and a leading edge (14) having an outboard end leading-edge nose and nose radius. One blunt raked wingtip (8) is located at each main wing outboard end (9) and includes a leading edge (20) swept back from the main wing leading edge (14). Each blunt raked wingtip (8) further includes a plurality of local airfoils each having a leading-edge nose radius and a chord. The nose radius is greater than about 2 % of the local chord for the majority of the airfoils. The relative bluntness of the raked wingtips minimizes boundary-layer separation, drag associated with boundary-layer separation, and premature buffeting of the aircraft during low speed flight.
Abstract:
Systems, devices, and methods including a leading edge tubular member (114); an upper tubular member (110); a lower tubular member (112); one or more upper rib members (124) connected between the leading edge tubular member (114) and the upper tubular member (110); one or more lower rib members (126) connected between the leading edge tubular member (114) and the lower tubular member (112); a rigid sandwich shell (102) disposed between the upper tubular member (110) and the leading edge tubular member (114); and a sandwich shear web (104) disposed between the upper tubular member (110) and the lower tubular member (112); where the rigid sandwich shell (102) and the sandwich shear web (104) form a D-shape.
Abstract:
An aircraft, such as an unmanned aerial vehicle or single-seat aircraft, comprising a main body and a pair of wing sections, each wing section comprising a front wing and a rear wing, wherein the front wing and the rear wing each comprise a first end that is connected to the main body, and a second end, wherein the second end of the front wing is connected to the second end of the rear wing. The main body is located between the pair of wing sections, and each wing section comprises a propulsion unit located between the front wing and the rear wing of the wing section. Each propulsion unit may comprise a first rotor and a second rotor, which may be pivotable with respect to the rest of the aircraft.
Abstract:
- Structure ailaire et engins mobiles, notamment engins volants, comportant une telle structure ailaire. - La structure ailaire (1) comporte au moins une aile avant (5) et une aile arrière (6) reliées entre elles, par l'intermédiaire d'au moins une attache distale (7) et une attache proximale (8) comprenant un corps allongé (3), de manière à former un polygone fermé. La corde moyenne C de l'aile avant (5), la corde réelle Ca de l'aile avant (5) au niveau de l'attache distale (7), les décalages H et h au niveau de l'attache proximale (8) entre les ailes avant (5) et arrière (6) selon des axes (A) et (B) orthogonaux, les décalages Ha et ha correspondants au niveau de l'attache distale (7) et la distance minimale Ea entre les parois des ailes avant (5) et arrière (6), vérifient des relations particulières, permettant d'optimiser des propriétés de la structure ailaire (1).
Abstract:
L'invention concerne un véhicule aérien comprenant un fuselage (30) s'étendant selon un axe principal longitudinal (AA), deux ailes (10, 20) positionnées de part et d'autre du fuselage, deux unités de propulsion (11, 21) chacune fixée respectivement à une aile, chaque unité de propulsion étant configurée pour produire une poussée dans un plan sensiblement parallèle à l'axe longitudinal, et une unité d'équilibrage statique (31) fixée au voisinage d'une extrémité du fuselage et configurée pour produire une poussée selon une direction sensiblement orthogonale à l'axe longitudinal, véhicule caractérisé en ce que chaque aile (11, 21) est montée rotative selon un axe transversal (BB) entre une position de vol aérodynamique où l'aile s'étend dans un plan sensiblement parallèle à l'axe longitudinal et une position de vol statique où l'aile s'étend dans un plan sensiblement perpendiculaire à l'axe longitudinal. Application à la réalisation de véhicules aériens sans pilote.