公开(公告)号：US20180202391A1

公开(公告)日：2018-07-19

申请号：US15868066

申请日：2018-01-11

Applicant: ROLLS-ROYCE plc

Inventor： Mark J. WILSON ,  Giulio ZAMBONI

IPC: F02K3/06 ,  F01D9/04 ,  F04D29/54

CPC classification number: F02K3/06 ,  F01D9/041 ,  F02K1/00 ,  F02K3/04 ,  F04D29/542 ,  F04D29/547 ,  F05D2250/184 ,  F05D2250/61 ,  F05D2250/73

Abstract: A fan outlet assembly comprises a fan discharge nozzle having a radially inner platform, a radially outer platform arranged coaxially and in radial alignment with the radially inner platform and a circumferential array of outlet guide vanes (110) spanning an annulus defined by the radially inner platform and radially outer platform. An annular duct extends downstream from the circumferential array, the duct having a radially outer wall (112) contiguous with the radially outer platform and a radially inner wall (111) contiguous with the radially inner platform. In a region extending downstream from the circumferential array, the radially inner and outer platforms and/or the radially inner and outer walls having a non-axisymmetric surface bounding the duct. A non-axisymmetric surface may be applied to either or both of the radially outer and radially inner contiguous surfaces and may extend upstream as well as downstream of the circumferential array of outlet guide vanes.

公开(公告)号：US20180120079A1

公开(公告)日：2018-05-03

申请号：US15611198

申请日：2017-06-01

Applicant: ROLLS-ROYCE plc

Inventor： Simon BATHER ,  Giulio ZAMBONI

IPC: G01B5/20 ,  G01B11/24 ,  G01B5/008 ,  G01N21/95 ,  G05B19/4093

CPC classification number: G01B5/205 ,  F01D5/12 ,  F01D9/02 ,  F05D2220/32 ,  F05D2260/83 ,  G01B5/008 ,  G01B11/24 ,  G01M15/14 ,  G01N21/9515 ,  G05B19/40931 ,  G05B19/4099 ,  G05B19/4207 ,  G05B2219/35128 ,  G05B2219/35162 ,  G05B2219/37205 ,  G05B2219/37617 ,  G05B2219/45147

Abstract: Producing a component having an in use gas washed surface includes: obtaining a reference component having a reference shape with an in use gas washed surface; setting one or more performance threshold for the reference shape, the threshold defining an acceptable performance for the reference shape; obtaining a manufactured component made to the reference shape; measuring the manufactured component and determining a displacement distribution indicative of the geometric deviation of the manufactured component from the reference shape; determining a performance sensitivity distribution for the reference component, the sensitivity distribution having a plurality of points, each point indicative of a performance factor for the reference component; combining the sensitivity distribution and displacement distribution to determine a performance prediction for the manufactured component; determining whether the performance prediction is within the performance threshold; accepting or rejecting the component for use if the predicted performance is within or outside the performance threshold, respectively.

公开(公告)号：US20170350683A1

公开(公告)日：2017-12-07

申请号：US15611162

申请日：2017-06-01

Applicant: ROLLS-ROYCE PLC

Inventor： Simon BATHER ,  Giulio ZAMBONI

IPC: G01B5/20 ,  G01B11/24 ,  G01B5/008 ,  F01D5/12 ,  F01D9/02 ,  G01B11/14

CPC classification number: G01B5/205 ,  F01D5/12 ,  F01D9/02 ,  F05D2220/32 ,  F05D2230/50 ,  G01B5/008 ,  G01B11/14 ,  G01B11/24 ,  G05B19/4099 ,  G05B19/4207 ,  G05B2219/35128 ,  G05B2219/37205 ,  G05B2219/37617 ,  G05B2219/45147

Abstract: A method of producing a component having an in use gas washed surface, including: obtaining a reference-component having a reference shape with in use gas washed surface; determining performance-sensitivity-distribution for the reference-component, the performance-sensitivity-distribution having plurality of points, each point indicative of a performance factor for the reference-component; identifying plurality of zones on the reference-component performance-sensitivity-distribution, each zone including at least one plurality of points; setting geometric-tolerance for each zone; manufacturing a component according to the reference-component; machining the manufactured-component outer surface so the manufactured-component surface is within predetermined geometric-tolerance for each reference-component corresponding zone; additionally/alternatively; measuring the manufactured-component geometry to determine whether the manufactured-component is within geometric-tolerance for each corresponding plurality of reference shape zones, and accepting production-component for use if geometry of the production-component is within the geometric-tolerance for each plurality of zones, or rejecting the production-component if the geometry is outside the geometric-tolerance for plurality of zones.