Multirod fluid actuator arrangement

    公开(公告)号:US11506231B2

    公开(公告)日:2022-11-22

    申请号:US17283268

    申请日:2018-10-08

    申请人: SAAB AB

    摘要: A method for controlling a control surface multirod actuator arrangement and the arrangement including: a first and a second multirod actuator configured to move or clamp around a first set of piston rods; a third multirod actuator configured to move or clamp around a second set of piston rods; a control unit configured to control motion of the first set of piston rods in a first motion mode and to control motion of the second set of piston rods in a second motion mode. Steps are moving at least one piston rod of first set of piston rods and/or clamping in parked position at least one piston rod of the second set of piston rods.

    POWER TRANSFER UNIT WITH BREAKOUT FRICTION REDUCTION AND LEAKAGE REDUCTION

    公开(公告)号:US20220228609A1

    公开(公告)日:2022-07-21

    申请号:US17614799

    申请日:2020-05-26

    IPC分类号: F15B20/00 B64C13/42 F15B3/00

    摘要: A power transfer unit includes a first hydraulic circuit, a second hydraulic circuit fluidly connected to the first hydraulic circuit, a pump and motor assembly fluidly connected between the first hydraulic circuit and the second hydraulic circuit, an isolation valve arranged along the first hydraulic circuit and fluidly connected to an inlet of the pump and motor assembly. The isolation valve is movable between a closed position and an open position to prevent and enable high-pressure fluid flow to the inlet, respectively. An unloader valve is arranged along the second hydraulic circuit and fluidly connected to an outlet of the pump and motor assembly, and an orifice is arranged along the second hydraulic circuit and fluidly connected to the unloader valve to reduce back pressure in the second hydraulic circuit.

    Aircraft assembly actuation system
    46.
    发明授权

    公开(公告)号:US11117651B2

    公开(公告)日:2021-09-14

    申请号:US16190935

    申请日:2018-11-14

    摘要: An aircraft assembly, having: a reference component; a first component and a first actuator, the first actuator configured to move the first component relative to the reference component; a second component and a second actuator, the second actuator configured to move the second component relative to the reference component; a position sensor configured to measure a position of the first component, and to output a position value, the sensor being capable of outputting a plurality of non-zero position values; and a controller configured to control the movement of the second component by the second actuator based at least partially on the position value output by the position sensor.

    Lower attachment system for a trimmable horizontal stabiliser actuator

    公开(公告)号:US10800515B2

    公开(公告)日:2020-10-13

    申请号:US15964109

    申请日:2018-04-27

    摘要: A lower attachment system for a trimmable horizontal stabiliser actuator comprising: a ballnut for being disposed on a screwshaft of the actuator and forming a part of a primary load path of the lower attachment system; a trunnion connected to the ballnut and forming a part of the primary load path of the lower attachment system; a failsafe plate disposed about the trunnion and forming a part of a secondary load path; a secondary connection connected to the failsafe plate and forming a part of the secondary load path; a sheet plate attached to a first mounting point on the secondary connection and a second mounting point on the ballnut; and an adjustment mechanism provided with the sheet plate for adjusting the size or position of the sheet plate to adapt it to fit a distance between the first and second mounting points.

    HYDRAULIC SYSTEM AND METHOD FOR A FLIGHT CONTROL SYSTEM OF AN AIRCRAFT

    公开(公告)号:US20190112031A1

    公开(公告)日:2019-04-18

    申请号:US16224794

    申请日:2018-12-19

    IPC分类号: B64C13/42

    CPC分类号: B64C13/504 B64C13/42

    摘要: A system of an aircraft includes a system pump and a booster pump. The system pump is configured to provide hydraulic fluid to the hydraulic system at a first working pressure. The booster pump is configured to supply hydraulic fluid to at least one boostable actuator at a second working pressure higher than the first working pressure. The boostable actuator is operatively coupled to and configured to actuate at least one flight control surface of an aircraft. The booster pump is configured as a high-pressure accumulator and an accumulator energizer, or as a hydraulic actuator pump and a variable speed motor.

    AIRCRAFT HYDRAULICS
    49.
    发明申请
    AIRCRAFT HYDRAULICS 审中-公开

    公开(公告)号:US20180370616A1

    公开(公告)日:2018-12-27

    申请号:US16014298

    申请日:2018-06-21

    IPC分类号: B64C13/42 B64C25/22 B64C25/60

    摘要: A hydraulic system 300 for an aircraft including a backup hydraulic pressure source 216 to provide hydraulic pressure to a brake 222 in the event of a failure condition of a primary hydraulic brake pressure source. The hydraulic system 300 also includes a landing gear backup system to provide hydraulic pressure to enable extension and/or retraction of landing gear 100. The backup hydraulic pressure source 216 is arranged to provide hydraulic pressure to the landing gear backup system in the event of a failure condition of a primary landing gear hydraulic pressure source.