Abstract:
A method of supersonic thrust generation includes generating a thrust supersonic exhaust plume (522) having a first average velocity from an engine (500), and expelling a bypass exhaust plume (532) having a second average velocity from the engine, the first average velocity greater than the second average velocity, so that the bypass exhaust plume inhibits coalescence of an engine exhaust plume compression shockwave (536).
Abstract:
An airfoil body may include a plurality of tubercles along a leading edge of the airfoil body and a plurality of crenulations along a trailing edge of the airfoil body, wherein at least one of a position, a size, and a shape of the plurality of tubercles and the plurality of crenulations varies in a non-periodic fashion. The non-periodic fashion may be according to a Fibonacci function and may mimic the configuration of a pectoral fin of a humpback whale. The tubercles and crenulations may be defined with respect to a pivot point. The spanwise profile, including the max chord trailing edge curvature, may closely follow divine spirals and related Fibonacci proportions. The spanwise chord thickness may vary in a nonlinear pattern. Related methods are also described.
Abstract:
A three stage watercraft for operation in the water as a traditional boat at low speeds in stage one, for operation on the water's surface at mid-range speeds at stage two, and for traveling in ground effect at higher range speeds is disclosed. The three stage craft includes a hydro-wing 12, either at least a single hydrofoil 13 or gyration rotor 14 to aid with lift from stage one to stage two, and a pair of outboard floats or hydro-floats 16a, 16b supported by the hydro-wing 12, which are also designed to aid with lift from stage one to stage two.
Abstract:
Lo aeronave conforma un volumen sustentador que incluye al menos parte del cuerpo central en que se aloja la carga a transportar, preservando dicho volumen, un perfil alar convencional en sentido longitudinal de la aeronave, que en sentido transversal se proyecta simétricamente hacia ambos lados, a partir del eje longitudinal en sendos primeros tramos con diedro negativo y flecha negativa, hasta sendos puntos de inflexión a partir de los cuales se proyectan sendos segundos tramos, distales, con diedro positivo y flecha positiva hasta los extremos de la envergadura alar.
Abstract:
An asymmetric aircraft (1) and an aircraft (1) that can operate from small ships (8) and be stored in high density with three aircraft or more in one helicopter hangar (107) without needing a landing gear or wing fold. These aircraft slide into and out of the hangar on dollies (90) like circuit boards in a computer and are launched and recovered using a large towed parafoil (6).
Abstract:
The lift and drag performance of all vehicles is strongly influenced by viscous effects, and in turn, laminar separation bubbles. This application employs an effective fluid boundary layer control strategy that reduces parasitic drag, allows for more usable angles of attack, and delays or stops separation. In the approach of this application, the control surface effectively uses the Magnus effect to delay or stop a separation bubble from forming, which can increase lift, reduce drag, and delay degrees of stall by directly manipulating the velocity gradient in the fluid boundary layer.
Abstract:
A safe, quiet, easy to control, efficient, and compact aircraft configuration is enabled through the combination of multiple vertical lift rotors, tandem wings, and forward thrust propellers. The vertical lift rotors, in combination with a front and rear wing, permits a balancing of the center of lift with the center of gravity for both vertical and horizontal flight. This wing and multiple rotor system has the ability to tolerate a relatively large variation of the payload weight for hover, transition, or cruise flight while also providing vertical thrust redundancy. The propulsion system uses multiple lift rotors and forward thrust propellers of a small enough size to be shielded from potential blade strike and provide increased perceived and real safety to the passengers. Using multiple independent rotors provides redundancy and the elimination of single point failure modes that can make the vehicle non-operable in flight.
Abstract:
The new Deturbulator could be is a really significant drag-reducing aerodynamic invention since the development of the now-common laminar-flow airfoils that were developed some 65 years ago. Its small size and lightweight make it easy to apply on a sailplane wing. Its location on a sailplane wing may be critical, and if similar performance improvements can be achieved with the many types of high performance sailplanes.
Abstract:
A bidirectional flying wing maximizes efficiency and reduces sonic boom during supersonic flight. The flying wing has bilateral symmetry across two perpendicular planes and a substantially isentropic compression bottom surface that minimizes the shock wave projected downward during flight. The flying wing may be rotated to provide a high aspect ratio and a low sweep angle during subsonic flight. The flying wing may be rotated to provide a low aspect ratio and a high sweep angle during supersonic flight.
Abstract:
Selon l'invention, l'aéronef comporte : - deux ailes (2,3) présentant une flèche (ϕ) inverse et ne portant aucun moteur ; - un empennage vertical arrière constitué d'au moins deux dérives (5, 6) et formant, avec la partie arrière (7) dudit fuselage (4), un canal (8) disposé sur le dos de celui-ci ; et - au moins un turbomoteur (9, 10) disposé sur le dos dudit fuselage (4) de façon que les flux de gaz engendrés par ledit turbomoteur (9, 10) pénètrent dans ledit canal (8) et que le bruit aval dudit turbomoteur (9, 10) soit masqué latéralement et vers le bas par ledit canal, les emplantures (1 1 , 12) desdites ailes (2, 3) étant disposées au voisinage de l'entrée d'air (15, 16) dudit turbomoteur (9, 10) de façon que le bruit amont engendré par celui-ci soit masqué latéralement et vers le bas par lesdites ailes (2, 3).