公开(公告)号：US11474540B2

公开(公告)日：2022-10-18

申请号：US16907617

申请日：2020-06-22

Applicant: ROLLS-ROYCE plc

Inventor： David Fillingham ,  Marko Bacic

IPC: G05D1/10 ,  B64C29/00 ,  G08G5/00

Abstract: A method of automatically determining a flight trajectory of a vertical take-off and landing aircraft having vectorable propulsion can be used to improve flight efficiency. The method includes receiving one or more aircraft flight constraints, inputting the aircraft flight constraints to a trajectory planning algorithm to determine a minimum energy aircraft transition trajectory, and outputting a control schedule to fly the aircraft to along the flight trajectory.

公开(公告)号：US09810092B2

公开(公告)日：2017-11-07

申请号：US14953188

申请日：2015-11-27

Applicant: ROLLS-ROYCE PLC

Inventor： James Peter Roberts ,  David Fillingham

IPC: G01M15/14 ,  F01D21/00 ,  G01B21/16 ,  F01D11/02

CPC classification number: F01D21/003 ,  F01D11/02 ,  G01B21/16

Abstract: A rotor arrangement including: a rotor stage having an annular array of rotor blades each blade having a tip; a casing that surrounds the rotor stage and defines a clearance between the tips and the casing; and an over tip leakage measurement system including a multi-hole total pressure probe mounted to a stationary component downstream of the rotor stage; the probe arranged such that the axis of at least one of the holes is substantially aligned with an expected flow direction from the rotor stage.