Actuation system investigation apparatus

    公开(公告)号:US09645050B2

    公开(公告)日:2017-05-09

    申请号:US14638569

    申请日:2015-03-04

    申请人: ROLLS-ROYCE PLC

    发明人: Peter Allford

    摘要: An apparatus for investigating mechanical operational characteristics of a gas turbine variable vane actuation system includes coaxial inner and outer annular casings corresponding to inner and outer casings of a gas turbine engine. The apparatus includes a circumferential row of vane substitutes, each extending between an inner end at the inner casing and an outer end at the outer casing, and rotatable about an axis extending through its ends to emulate the rotation of a variable vane in the engine. The apparatus includes respective loading devices for the vane substitutes, each applying a mechanical load to its vane substitute between the inner and outer ends as the vane substitute rotates to emulate the aerodynamic loading on a variable vane in the engine and to generate resulting frictional loading at the inner and outer ends which emulates resulting the frictional loading at the ends of the variable vane in the engine.

    SENSOR SYSTEM
    45.
    发明申请
    SENSOR SYSTEM 审中-公开

    公开(公告)号:US20170115183A1

    公开(公告)日:2017-04-27

    申请号:US15287459

    申请日:2016-10-06

    申请人: ROLLS-ROYCE plc

    摘要: A sensor system is disclosed comprising a sensor and a mast on which the sensor is mounted. The mast comprises a core body and a shroud, whereby the shroud is provided about the core body and the shroud is rotatable with respect to the core body under the influence, in use, of a fluid flow flowing past the shroud. The shroud is shaped so as, from at least one fluid flow direction, it presents a different flow resistance in dependence upon its rotational orientation. The rotational orientation of the shroud adjusts to reduce the flow resistance produced by the shroud to the fluid flow in response to the commencement of, or a change in the fluid flow direction to, one of the at least one fluid flow directions.