Abstract: A latch mechanism for use in a ram air turbine actuator including: a coupler housing extending from a first end to a second end opposite the first end, the coupler housing including: a base arm having an upper surface and a lower surface opposite the upper surface; a first wall extending away from the upper surface, the first wall including a first slot; and a second wall extending away from the upper surface, the second wall including a second slot, wherein the upper surface, the first wall, and the second wall at least partially enclose a cavity therebetween; a lock release pivot arm including: a first end; a second end opposite the first end of the lock release pivot arm; an orifice located proximate the second end of the lock release pivot arm; and a pivot pin located within the first slot, the second slot, and the orifice.

Abstract: A plate for use in a heat exchanger is includes: a first surface; a second surface; first, second and third discrete flow passages passing through the plate from the first surface to the second surface, the second flow passage extending around the first flow passage and the third flow passage extending around the second flow passage. A plurality of fins extend parallel to the first surface across the third flow passage and have a first surface extending parallel to the first surface of the plate and a second surface extending parallel to and spaced from the first surface of the fin; and one or more pins protruding from the first surface of at least some of the fins. The pins extend away from the second surface of the fins.

Abstract: A locking mechanism includes a linkage assembly having a first link (6a) and a second link (6b) joined at a pivot point (110). The assembly also includes a linkage assembly spring to bias the linkage assembly into a first, locked, position and a rotational rod (1) having a cam (120) formed thereon with a cam surface in engagement with the linkage assembly in the region of the pivot point (110). The assembly also includes a solenoid assembly (3) arranged, in a first mode, to rotate the rotational rod (1) such that the cam acts as a stop against the linkage assembly at the pivot point in a locked position, and, in a second mode to rotate the rotational rod such that the cam surface presses against the linkage assembly sufficiently to overcome the linkage assembly spring and to force the linkage assembly into a second, unlocked position.

Abstract: A locking mechanism comprises a piston element comprising a piston groove extending in an axial direction along a radially outer surface of the piston element, a housing comprising a bore for receiving the piston element for reciprocating axial movement between a locked position and an unlocked position, a locking ball received in the piston groove and a locking ring mounted for rotational movement about the piston element between a locking position and an unlocking position, the locking ring comprising a radially inner locking ring groove, the locking ring groove having a recess formed in a radially inner surface thereof for receiving the locking ball in the unlocking position of the locking ring. The piston groove comprises a first axially extending section and a second axially extending section, the radial depth (D1) of the first axially extending section being greater than the radial depth (D2) of the second axially extending section.

Abstract: A latch mechanism for use in a ram air turbine actuator including: a coupler housing extending from a first end to a second end opposite the first end, the coupler housing including: a base arm having an upper surface and a lower surface opposite the upper surface; a first wall extending away from the upper surface, the first wall including a first slot; and a second wall extending away from the upper surface, the second wall including a second slot, wherein the upper surface, the first wall, and the second wall at least partially enclose a cavity therebetween; a lock release pivot arm including: a first end; a second end opposite the first end of the lock release pivot arm; an orifice located proximate the second end of the lock release pivot arm; and a pivot pin located within the first slot, the second slot, and the orifice.

Abstract: A locking mechanism for releasably locking a lock bolt against axial movement includes a solenoid assembly arranged, in use, in proximity to an axially moveable lock bolt. The solenoid assembly includes: a solenoid, a solenoid bias spring and a solenoid plunger having a plunger tip. When the solenoid is energised, the bias spring causes the solenoid plunger to move to bring the plunger tip into locking engagement with the lock bolt to prevent axial movement thereof, and when the solenoid is not energised, the solenoid bias spring causes the solenoid plunger to move to bring the plunger tip out of locking engagement with the lock bolt thus permitting axial movement thereof.

Abstract: A locking mechanism for releasably locking a lock bolt against axial movement, the mechanism comprising an axially moveable member, arranged to move axially with the lock bolt biasing means, arranged to bias the piston towards the lock bolt; rotation means in threaded engagement with the piston such that rotation of the rotation means causes axial movement of the piston, and a solenoid assembly arranged to prevent rotation of said rotation means in a locked state, the solenoid assembly comprising: a solenoid plunger having a solenoid tip and a solenoid arranged to cause movement of the solenoid plunger relative to the rotation means, the solenoid assembly arranged such that in a locked state the solenoid causes the solenoid tip to engage with the rotation means such as to prevent rotation thereof, thus preventing axial movement of the piston.

Abstract: A device for selectively controlling the flow of hydraulic fluid through the pilot valve comprises a longitudinal axis (A) and a housing, an internal cavity, at least one inlet passage, at least one outlet passage, a guide disposed in the internal cavity, a first seat disposed in the internal cavity, a second seat disposed in the internal cavity, a movable blocking member disposed in the guide cavity, and an actuator configured to control the position of the movable blocking member.

Abstract: A plate for use in a heat exchanger is includes: a first surface; a second surface; first, second and third discrete flow passages passing through the plate from the first surface to the second surface, the second flow passage extending around the first flow passage and the third flow passage extending around the second flow passage. A plurality of fins extend parallel to the first surface across the third flow passage and have a first surface extending parallel to the first surface of the plate and a second surface extending parallel to and spaced from the first surface of the fin; and one or more pins protruding from the first surface of at least some of the fins. The pins extend away from the second surface of the fins.

Abstract: A locking mechanism comprises a piston element comprising a piston groove extending in an axial direction along a radially outer surface of the piston element, a housing comprising a bore for receiving the piston element for reciprocating axial movement between a locked position and an unlocked position, a locking ball received in the piston groove and a locking ring mounted for rotational movement about the piston element between a locking position and an unlocking position, the locking ring comprising a radially inner locking ring groove, the locking ring groove having a recess formed in a radially inner surface thereof for receiving the locking ball in the unlocking position of the locking ring. The piston groove comprises a first axially extending section and a second axially extending section, the radial depth (D1) of the first axially extending section being greater than the radial depth (D2) of the second axially extending section.

Abstract: A locking mechanism for releasably locking a lock bolt against axial movement includes: a locking mechanism for releasably locking a lock bolt against axial movement, and: an elongate member 1 axially moveable relative to a housing and, in use, in moveable engagement with a lock bolt. The mechanism also includes a flap assembly 2 moveable between a first, closed position, located between the elongate member and the housing so as to prevent axial movement of the elongate member towards the housing, and a second, open position allowing the elongate member to move axially towards the housing.

Abstract: A locking mechanism comprising a linkage assembly comprising a first link and a second link joined at a pivot point; a linkage assembly spring to bias the linkage assembly into a first, locked, position; a cam assembly having a cam 1 with a cam surface in engagement with the linkage assembly; a cam biasing member such as a spring arranged to bias the cam surface to press against the linkage assembly sufficiently to overcome the linkage assembly spring and to force the linkage assembly into a second, unlocked position; and a solenoid assembly arranged to engage the cam in a locked position in which the cam is prevented from forcing the linkage assembly into the unlocked position.

Abstract: A locking mechanism for releasably locking a lock bolt against axial movement includes: a locking mechanism for releasably locking a lock bolt against axial movement, and: an elongate member 1 axially moveable relative to a housing and, in use, in moveable engagement with a lock bolt. The mechanism also includes a flap assembly 2 moveable between a first, closed position, located between the elongate member and the housing so as to prevent axial movement of the elongate member towards the housing, and a second, open position allowing the elongate member to move axially towards the housing.

Abstract: A locking mechanism for releasably locking a lock bolt against axial movement, the mechanism comprising an axially moveable member, arranged to move axially with the lock bolt biasing means, arranged to bias the piston towards the lock bolt; rotation means in threaded engagement with the piston such that rotation of the rotation means causes axial movement of the piston, and a solenoid assembly arranged to prevent rotation of said rotation means in a locked state, the solenoid assembly comprising: a solenoid plunger having a solenoid tip and a solenoid arranged to cause movement of the solenoid plunger relative to the rotation means, the solenoid assembly arranged such that in a locked state the solenoid causes the solenoid tip to engage with the rotation means such as to prevent rotation thereof, thus preventing axial movement of the piston.

Abstract: A locking mechanism for releasably locking a lock bolt against axial movement includes a solenoid assembly arranged, in use, in proximity to an axially moveable lock bolt. The solenoid assembly includes: a solenoid, a solenoid bias spring and a solenoid plunger having a plunger tip. When the solenoid is energised, the bias spring causes the solenoid plunger to move to bring the plunger tip into locking engagement with the lock bolt to prevent axial movement thereof, and when the solenoid is not energised, the solenoid bias spring causes the solenoid plunger to move to bring the plunger tip out of locking engagement with the lock bolt thus permitting axial movement thereof.

Abstract: A locking mechanism comprising a linkage assembly comprising a first link and a second link joined at a pivot point; a linkage assembly spring to bias the linkage assembly into a first, locked, position; a cam assembly having a cam 1 with a cam surface in engagement with the linkage assembly; a cam biasing member such as a spring arranged to bias the cam surface to press against the linkage assembly sufficiently to overcome the linkage assembly spring and to force the linkage assembly into a second, unlocked position; and a solenoid assembly arranged to engage the cam in a locked position in which the cam is prevented from forcing the linkage assembly into the unlocked position.