Abstract:
An electric motor system having a power supply, an electric motor connected to the power supply, an object driven by the motor having a range of motion and a substantially neutral position within the range of motion, a power sensor configured to sense power from the power supply, a position sensor configured to sense position of the object in at least a portion of the range of motion, an energy storage, a controller connected to the power supply and the energy storage, wherein the controller is configured to brake the motor as a function of the position sensor, the neutral position and the power sensor.
Abstract:
Beschrieben wird die Verwendung eines Lackes umfassend: eine Polyurethanmatrix auf Basis aliphatischer Komponenten und in die Polyurethanmatrix eingebettete, die Abriebbeständigkeit erhöhende Füllstoffe als abriebfeste Beschichtung von (a) Flugzeuglandeklappen 2 im Kontaktbereich mit den Spoilern 4 oder (b) im Scheuerbereich der Cargo Doors oder (c) im Scheuerbereich anderer im Betrieb mechanisch aufeinander reibender Flugzeugbauteile. Beschrieben werden ferner entsprechende Landeklappen und Lacke.
Abstract:
Systems and methods for controlling aircraft flaps and spoilers are disclosed. Systems (200) in accordance with some embodiments -include- a wing (210) having a trailing edge (211) , and a flap (220) positioned at least partially aft of the wing trailing edge (211) and being deployable relative to the wing (210) between a first flap position and a second flap position by operation of a first actuator. A spoiler (230) can be positioned at least proximate to the trailing edge (211) and can be movable among at least three positions, including a first spoiler position in which the spoiler forms a generally continuous contour with an upper surface of the wing (210) , a second spoiler position deflected downwardly from the first, and a third spoiler position deflected upwardly from the first. A second actuator (231) can be operatively coupled to the spoiler to move the spoiler among the first, second and third spoiler positions in a manner that is mechanically independent of the motion of the flap. independent of the motion of the flap.
Abstract:
Systems and methods for controlling aircraft flaps and spoilers are disclosed. Systems in accordance with some embodiments include a wing having a trailing edge, and a flap positioned at least partially aft of the wing trailing edge and being deployable relative to the wing between a first flap position and a second flap position by operation of a first actuator. A spoiler can be positioned at least proximate to the trailing edge and can be movable among at least three positions, including a first spoiler position in which the spoiler forms a generally continuous contour with an upper surface of the wing, a second spoiler position deflected downwardly from the first, and a third spoiler position deflected upwardly from the first. A second actuator can be operatively coupled to the spoiler to move the spoiler among the first, second and third spoiler positions in a manner that is mechanically independent of the motion of the flap.
Abstract:
An aircraft (10) with swept back wings (16, 18) and spoilers (30,32) inlaid into the top surface (36) near the tips of the wings. The aircraft also includes an elevator (34) formed in the center back portion of the aircraft, which is also aft of the spoilers. It is aft to allow an auxiliary control in the elevator signal to cancel the unwanted pitch up moment caused by the spoilers only going up and being aft of the center of gravity of the aircraft. Roll is achieved with these spoilers by the direct action of the lift dumping on one side or the other and by taking advantage of the transformation of yaw into roll by the sweep back of the wings.
Abstract:
Methods are provided for operating an air vehicle, the air vehicle including fixed wings configured to provide mild stall characteristics including a post-stall regime, and a propulsion system capable of generating a controllable thrust, the thrust being variable at least between an idle thrust and a maximum thrust. During a landing maneuver, the air vehicle is caused to attain an angle of attack corresponding to said post-stall regime, and during the landing maneuver, there is concurrently generated a thrust level of said thrust greater than said idle thrust to provide a thrust vector having a thrust lift force component at landing. Corresponding control systems are also provided, and air vehicles including such control systems are also provided.
Abstract:
An aerodynamic control surface assembly comprising: an aerodynamic control surface (4); an actuator (10) for controlling deployment of the control surface; and a locking mechanism (30) moveable from a locked to an unlocked position. When the locking mechanism is set to the locked position, the actuator is operatively coupled to the control surface and the control surface can move in dependently of the actuator when the locking mechanism is set to the unlocked position. Such an assembly may be used in an aircraft to prevent clashing between a deployed flap (16) and a drooped spoiler (4) in the event of an actuator control systems failure.
Abstract:
Ein Tragflügel (1) weist eine Saugseite (4), eine Hinterkante (3) und mindestens einen im Bereich der Hinterkante (3) angeordneten Spoiler (8) auf, wobei der Spoiler (8) im Flug gegen eine Überströmung (11 ) der Saugseite (4) des Tragflügels (3) anstellbar ist. Dazu ist eine Vorderkante (12) des Spoilers (8) im Flug über die Saugseite (4) des Tragflügels (1) ausfahrbar und der Spoiler (8) ist so im Flug mit seiner der Saugseite (11 ) zugewandten Unterseite (13) gegen die Überströmung (11) der Saugseite (4) anstellbar.
Abstract:
An aircraft flight control system in which wing-mounted flight control output devices are employed in a multipurpose role. The system in one form includes wing-mounted port and starboard output assemblies (24, 25) of yaw and roll control surface components (26, 27, 28; 29, 30, 31) and port and starboard flight control actuators (32, 33) which in response to a yaw demand input cause the components (26, 27; 29, 30) of the assemblies (24, 25) to produce asymmetric yawing forces on the wings (12, 13) and yawing of the aircraft (10) and in response to a roll demand input cause the components (28, 31) to produce rolling forces on the wings (12, 13) and rolling of the aircraft (10). In addition, the actuators (32, 33) in response to an air-braking demand input cause the components (26, 27; 29, 30) to produce symmetric air-braking forces on the wings (12, 13) and aerodynamic braking of the aircraft. In another form, the control surface components of the wing-mounted output assemblies provide simply for yawing and air-braking forces to be applied to the aircraft.
Abstract:
Steering device for a hang glider, comprising spoiler flaps (34, 36) disposed in the area of the wing ends. Said spoiler flaps can be operated independently of each other. The lift/drag ratio of the hang glider (10) is thereby reduced and the gliding angle thus increased. Outward displacement of a spoiler flap causes the hang glider to describe a curve. The spoiler flaps are so constructed that they adopt the line of the wing surface during normal use of the glider.