Abstract:
A fluid-powered rotary actuator (10) for use in operating a aircraft flight control surface, the body (22) of which is comprised of an elongated stationary first end (34) and a rotatable second portion (36), with an elongated annular sleeve (58) reciprocally and coaxially mounted within the body (22). A tie-rod is disposed within the annular sleeve (58) to prevent axial separation of the body portions (34, 36) during actuation. The axially outward portions of the sleeve (58) and the corresponding portions of the stationary and rotatable body portions (34, 36) have helical ball races (108) formed therein to transmit torque between the body portions (34, 36) and the sleeve (58), to cause the rotatable body portion (36) to rotate in response to fluid-powered linear reciprocation of the sleeve (58). The sleeve (58) further contains six recirculation ball races (126) to form six endless ball circuits therein.
Abstract:
An actuator control system has a dual concentric servo valve having a spool and at least one motor adapted to selectively displace the spool.
Abstract:
Die vorliegende Erfindung betrifft einen Linearaktuator mit einem Spindeltrieb, an dessen Spindelmutter (40) eine translatorische Bewegung abgreifbar ist, und mit einem elektrischen Antrieb zur Betätigung der Spindel (30), wobei die Spindel in axialer Richtung auf einer Stange (20) verschiebbar gelagert ist und mit der Stange einen abgeschlossenen Hohlraum (50) bildet, wobei der Hohlraum durch ein Hydraulikmedium mit Druck beaufschlagt ist, um die Spindel in der regulären Arbeitsposition auf der Stange zu halten, und weiterhin Mittel (118) zur Reduzierung des Drucks im Hohlraum vorgesehen sind, so dass der Spindeltrieb aufgrund seiner Gewichtskraft in axialer Richtung auf der Stange verschiebbar ist.
Abstract:
L'invention concerne un boîtier à accessoires de turbomoteur pour aéronef, ledit boîtier (140) comprenant un carter (42), une tringle (115) de commande de volets de l'aéronef agencée pour coulisser axialement à l'intérieur dudit boîtier (140) et un vérin (120) d'entraînement de ladite tringle (115) monté sur ledit carter (42), ledit vérin (120) comprenant un corps creux (121), un piston (123) agencé pour se déplacer en translation à l'intérieur dudit corps (121) et une tige de piston (122) reliée audit piston (123) et s'étendant au moins en partie à l'extérieur du corps (121) du vérin (120), ladite tige (122) étant reliée à la tringle (115), le boîtier (140) étant caractérisé en ce que le corps (121) du vérin (120) est disposé entre la liaison, de la tige (122) à la tringle (115), et le carter (42) du boîtier (140).
Abstract:
A pneumatic artificial muscle (PAM) actuator (100) includes first and second end caps (102-104), an elastic bladder (106) connected to the end caps, and a covering (108) around the elastic bladder and connected to the end caps. At least one of the first and second end caps is configured to move and narrow a distance between the end caps in response to inflation of the elastic bladder by a fluid. At least one of the end caps includes a vent (114) configured to allow the fluid to exit the elastic bladder and collapse the covering after activation of the PAM actuator. At least the covering is configured to provide braking for the PAM actuator. The covering may be configured to collapse at least partially between the first and second end caps to provide at least some of the braking for the PAM actuator.
Abstract:
A pressurized, fluid-filled channel network embedded in an elastic structure, asymmetrically to the neutral plane, is used to create a deformation field within the structure by the pressurization of the embedded fluidic network, which can be applied in accordance with external forces acting on the structure. The deformation of the structure resulting from the liquid pressure and geometry of the network is related to a continuous deformation-field function. This enables the design of networks creating steady arbitrary deformation fields as well as to eliminate deformation created by external time varying forces, thus increasing the effective rigidity of the beam. By including the effects of the deformation created by the channel network on the beam inertia, the response of the beam to oscillating forces can be modified, enabling the design of channel networks which create pre-defined oscillating deformation patterns in response to external oscillating forces.
Abstract:
Die Erfindung betrifft einen hydraulischen Flugsteueraktuator umfassend eine Kolben-Zylinder-Vorrichtung mit einem Kolben und einem Zylinder sowie eine Doppeldichtungsvorrichtung mit wenigstens einer Primärdichtung (1) und wenigstens einem Kolbenring (2) als Sekundärdichtung (2), wobei die Primärdichtung (1) und der Kolbenring (2) zwischen dem Kolben und dem Zylinder vorgesehen sind, dadurch gekennzeichnet, dass zum Einbringen einer definierten Leckage an der Sekundärdichtung (2) wenigstens eine Drosselstelle (21) im Bereich der Sekundärdichtung (2) vorgesehen ist.
Abstract:
본 발명은 항공기의 비행조종면 구동장치에 관한 것으로 날개 프레임에 액츄에이터가 설치되고 상기 액츄에이터에 의해 전달되는 동력이 비행조종면을 구동하는 항공기의 비행조종면 구동장치에 있어서, 상기 액츄에이터를 상기 날개 프레임에 대해 눕혀지는 방향으로 날개 프레임의 외부에 설치하고, 상기 액츄에이터에서 발생하는 동력을 방향전환수단을 통해 상기 날개 프레임에 대해 세워지는 방향으로 전환시켜 상기 비행조종면에 전달하는 구조로 된 것이다. 본 발명은 날개 프레임에 형성되는 연료저장공간을 효율적으로 활용하고 기체의 중량을 절감할 수 있다는 효과가 있다.