GB942648A - Centrifugal pumps - Google Patents

Centrifugal pumps

Info

Publication number
GB942648A
GB942648A GB2433362A GB2433362A GB942648A GB 942648 A GB942648 A GB 942648A GB 2433362 A GB2433362 A GB 2433362A GB 2433362 A GB2433362 A GB 2433362A GB 942648 A GB942648 A GB 942648A
Authority
GB
United Kingdom
Prior art keywords
perforations
june
rotor
centrifugal pumps
rows
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2433362A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sulzer AG
Original Assignee
Sulzer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CH744361A priority Critical patent/CH398320A/en
Application filed by Sulzer AG filed Critical Sulzer AG
Publication of GB942648A publication Critical patent/GB942648A/en
Application status is Expired legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • F04D29/24Vanes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • F04D29/2261Rotors specially for centrifugal pumps with special measures
    • F04D29/2277Rotors specially for centrifugal pumps with special measures for increasing NPSH or dealing with liquids near boiling-point
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • F04D29/24Vanes
    • F04D29/242Geometry, shape
    • F04D29/245Geometry, shape for special effects

Abstract

942,648. Centrifugal pumps. SULZER FRERES S.A. June 25, 1962 [June 27, 1961], No. 24333/62. Heading F1C. In a centrifugal pump the blades 2 of the rotor 1 of the first, or only, stage are provided with a number of perforations 3 near their leading edges. The perforations reduce surging. The perforations 3 may be disposed perpendicularly to the blade surface irregularly or in one or more rows parallel to the leading edge. The spacings between the rows and between the perforations in a row and the diameters of the perforations may be equal or different. Passages 7 equalise the pressure at either side of the rotor 1.
GB2433362A 1961-06-27 1962-06-25 Centrifugal pumps Expired GB942648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH744361A CH398320A (en) 1961-06-27 1961-06-27 rotary pump

Publications (1)

Publication Number Publication Date
GB942648A true GB942648A (en) 1963-11-27

Family

ID=4325201

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2433362A Expired GB942648A (en) 1961-06-27 1962-06-25 Centrifugal pumps

Country Status (3)

Country Link
CH (1) CH398320A (en)
DE (1) DE1403872A1 (en)
GB (1) GB942648A (en)

Cited By (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3749520A (en) * 1971-10-04 1973-07-31 Gen Motors Corp Centrifugal compressor blading
US4028005A (en) * 1974-04-24 1977-06-07 Bruno Eck Impeller blade reinforcement
JPS53123506U (en) * 1977-03-07 1978-10-02
JPS585500A (en) * 1981-07-03 1983-01-12 Nikkiso Co Ltd Low-noise inducer
JPS588393U (en) * 1981-07-11 1983-01-19
JPS6045796A (en) * 1983-08-22 1985-03-12 Toshio Aono High-speed pump
US4720242A (en) * 1987-03-23 1988-01-19 Lowara, S.P.A. Centrifugal pump impeller
JPS6375592U (en) * 1987-10-21 1988-05-19
US4890980A (en) * 1988-08-08 1990-01-02 Ingersoll-Rand Company Centrifugal pump
US5169286A (en) * 1989-03-09 1992-12-08 Yutaka Yamada Variable capacity centrifugal water pump with movable pressure chamber formed by impeller
US5628616A (en) * 1994-12-19 1997-05-13 Camco International Inc. Downhole pumping system for recovering liquids and gas
US5664944A (en) * 1994-12-05 1997-09-09 The Babcock & Wilcox Company Low pressure drop vanes for burners and NOX ports
US5755567A (en) * 1996-02-21 1998-05-26 The Babcock & Wilcox Company Low vortex spin vanes for burners and overfire air ports
US5951243A (en) 1997-07-03 1999-09-14 Cooper; Paul V. Rotor bearing system for molten metal pumps
US6093000A (en) * 1998-08-11 2000-07-25 Cooper; Paul V Molten metal pump with monolithic rotor
US6303074B1 (en) 1999-05-14 2001-10-16 Paul V. Cooper Mixed flow rotor for molten metal pumping device
US6345964B1 (en) 1996-12-03 2002-02-12 Paul V. Cooper Molten metal pump with metal-transfer conduit molten metal pump
US6689310B1 (en) 2000-05-12 2004-02-10 Paul V. Cooper Molten metal degassing device and impellers therefor
US6723276B1 (en) 2000-08-28 2004-04-20 Paul V. Cooper Scrap melter and impeller
US6848887B2 (en) * 2001-08-23 2005-02-01 Lg Electronics Inc. Turbofan and mold thereof
US7281896B2 (en) * 2005-05-27 2007-10-16 Delta Electronics, Inc. Fan and impeller thereof
GB2446918A (en) * 2007-02-20 2008-08-27 Schlumberger Holdings Centrifugal pump
US7731891B2 (en) 2002-07-12 2010-06-08 Cooper Paul V Couplings for molten metal devices
US7906068B2 (en) 2003-07-14 2011-03-15 Cooper Paul V Support post system for molten metal pump
US8075837B2 (en) 2003-07-14 2011-12-13 Cooper Paul V Pump with rotating inlet
US8178037B2 (en) 2002-07-12 2012-05-15 Cooper Paul V System for releasing gas into molten metal
US8337746B2 (en) 2007-06-21 2012-12-25 Cooper Paul V Transferring molten metal from one structure to another
US8361379B2 (en) 2002-07-12 2013-01-29 Cooper Paul V Gas transfer foot
US8366993B2 (en) 2007-06-21 2013-02-05 Cooper Paul V System and method for degassing molten metal
US8444911B2 (en) 2009-08-07 2013-05-21 Paul V. Cooper Shaft and post tensioning device
US8449814B2 (en) 2009-08-07 2013-05-28 Paul V. Cooper Systems and methods for melting scrap metal
US8524146B2 (en) 2009-08-07 2013-09-03 Paul V. Cooper Rotary degassers and components therefor
US8529828B2 (en) 2002-07-12 2013-09-10 Paul V. Cooper Molten metal pump components
US8535603B2 (en) 2009-08-07 2013-09-17 Paul V. Cooper Rotary degasser and rotor therefor
US8613884B2 (en) 2007-06-21 2013-12-24 Paul V. Cooper Launder transfer insert and system
GB2507307A (en) * 2012-10-25 2014-04-30 Anglia Ruskin University Impeller
US8714914B2 (en) 2009-09-08 2014-05-06 Paul V. Cooper Molten metal pump filter
CN104179722A (en) * 2014-07-21 2014-12-03 大同市益达环保节能科技发展有限责任公司 Efficient water pump impeller
US9011761B2 (en) 2013-03-14 2015-04-21 Paul V. Cooper Ladle with transfer conduit
US9108244B2 (en) 2009-09-09 2015-08-18 Paul V. Cooper Immersion heater for molten metal
US9156087B2 (en) 2007-06-21 2015-10-13 Molten Metal Equipment Innovations, Llc Molten metal transfer system and rotor
US9205490B2 (en) 2007-06-21 2015-12-08 Molten Metal Equipment Innovations, Llc Transfer well system and method for making same
CN105723096A (en) * 2014-01-22 2016-06-29 三菱重工业株式会社 Centrifugal compressor impeller and
US9409232B2 (en) 2007-06-21 2016-08-09 Molten Metal Equipment Innovations, Llc Molten metal transfer vessel and method of construction
US9410744B2 (en) 2010-05-12 2016-08-09 Molten Metal Equipment Innovations, Llc Vessel transfer insert and system
US20160309620A1 (en) * 2015-04-14 2016-10-20 Fujitsu Limited Pump, cooling apparatus and electronic device
US9643247B2 (en) 2007-06-21 2017-05-09 Molten Metal Equipment Innovations, Llc Molten metal transfer and degassing system
US9903383B2 (en) 2013-03-13 2018-02-27 Molten Metal Equipment Innovations, Llc Molten metal rotor with hardened top
US10052688B2 (en) 2013-03-15 2018-08-21 Molten Metal Equipment Innovations, Llc Transfer pump launder system
US10138892B2 (en) 2014-07-02 2018-11-27 Molten Metal Equipment Innovations, Llc Rotor and rotor shaft for molten metal
US10267314B2 (en) 2016-01-13 2019-04-23 Molten Metal Equipment Innovations, Llc Tensioned support shaft and other molten metal devices
US10428821B2 (en) 2009-08-07 2019-10-01 Molten Metal Equipment Innovations, Llc Quick submergence molten metal pump
US10465688B2 (en) 2015-07-02 2019-11-05 Molten Metal Equipment Innovations, Llc Coupling and rotor shaft for molten metal devices

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009036804A1 (en) 2009-08-10 2011-02-17 Bär + Co. Anlagentechnik GmbH Centrifugal pump for conveying liquid by constantly rotating impeller, has housing and impeller with wings rotated in conveying area, where impeller is partially interspersed by opening, which is covered on rear side of impeller

Cited By (99)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3749520A (en) * 1971-10-04 1973-07-31 Gen Motors Corp Centrifugal compressor blading
US4028005A (en) * 1974-04-24 1977-06-07 Bruno Eck Impeller blade reinforcement
JPS53123506U (en) * 1977-03-07 1978-10-02
JPS585500A (en) * 1981-07-03 1983-01-12 Nikkiso Co Ltd Low-noise inducer
JPS588393U (en) * 1981-07-11 1983-01-19
JPS5934394Y2 (en) * 1981-07-11 1984-09-22
JPS6045796A (en) * 1983-08-22 1985-03-12 Toshio Aono High-speed pump
US4720242A (en) * 1987-03-23 1988-01-19 Lowara, S.P.A. Centrifugal pump impeller
AU594230B2 (en) * 1987-03-23 1990-03-01 Lowara, S.P.A Centrifugal pump impeller
JPS6375592U (en) * 1987-10-21 1988-05-19
US4890980A (en) * 1988-08-08 1990-01-02 Ingersoll-Rand Company Centrifugal pump
US5169286A (en) * 1989-03-09 1992-12-08 Yutaka Yamada Variable capacity centrifugal water pump with movable pressure chamber formed by impeller
US5664944A (en) * 1994-12-05 1997-09-09 The Babcock & Wilcox Company Low pressure drop vanes for burners and NOX ports
US5628616A (en) * 1994-12-19 1997-05-13 Camco International Inc. Downhole pumping system for recovering liquids and gas
US5755567A (en) * 1996-02-21 1998-05-26 The Babcock & Wilcox Company Low vortex spin vanes for burners and overfire air ports
US6345964B1 (en) 1996-12-03 2002-02-12 Paul V. Cooper Molten metal pump with metal-transfer conduit molten metal pump
US5951243A (en) 1997-07-03 1999-09-14 Cooper; Paul V. Rotor bearing system for molten metal pumps
US6093000A (en) * 1998-08-11 2000-07-25 Cooper; Paul V Molten metal pump with monolithic rotor
US6398525B1 (en) 1998-08-11 2002-06-04 Paul V. Cooper Monolithic rotor and rigid coupling
US6303074B1 (en) 1999-05-14 2001-10-16 Paul V. Cooper Mixed flow rotor for molten metal pumping device
US6689310B1 (en) 2000-05-12 2004-02-10 Paul V. Cooper Molten metal degassing device and impellers therefor
US6723276B1 (en) 2000-08-28 2004-04-20 Paul V. Cooper Scrap melter and impeller
US6848887B2 (en) * 2001-08-23 2005-02-01 Lg Electronics Inc. Turbofan and mold thereof
US9435343B2 (en) 2002-07-12 2016-09-06 Molten Meal Equipment Innovations, LLC Gas-transfer foot
US9034244B2 (en) 2002-07-12 2015-05-19 Paul V. Cooper Gas-transfer foot
US8529828B2 (en) 2002-07-12 2013-09-10 Paul V. Cooper Molten metal pump components
US7731891B2 (en) 2002-07-12 2010-06-08 Cooper Paul V Couplings for molten metal devices
US8440135B2 (en) 2002-07-12 2013-05-14 Paul V. Cooper System for releasing gas into molten metal
US8409495B2 (en) 2002-07-12 2013-04-02 Paul V. Cooper Rotor with inlet perimeters
US8361379B2 (en) 2002-07-12 2013-01-29 Cooper Paul V Gas transfer foot
US8110141B2 (en) 2002-07-12 2012-02-07 Cooper Paul V Pump with rotating inlet
US8178037B2 (en) 2002-07-12 2012-05-15 Cooper Paul V System for releasing gas into molten metal
US8501084B2 (en) 2003-07-14 2013-08-06 Paul V. Cooper Support posts for molten metal pumps
US8075837B2 (en) 2003-07-14 2011-12-13 Cooper Paul V Pump with rotating inlet
US7906068B2 (en) 2003-07-14 2011-03-15 Cooper Paul V Support post system for molten metal pump
US8475708B2 (en) 2003-07-14 2013-07-02 Paul V. Cooper Support post clamps for molten metal pumps
US7281896B2 (en) * 2005-05-27 2007-10-16 Delta Electronics, Inc. Fan and impeller thereof
US7857577B2 (en) 2007-02-20 2010-12-28 Schlumberger Technology Corporation System and method of pumping while reducing secondary flow effects
GB2446918B (en) * 2007-02-20 2009-12-02 Schlumberger Holdings Methods of making centrifugal pump impellers and/or diffusers, and centrifugal pumps incorporating such impellers and/or diffusers
GB2446918A (en) * 2007-02-20 2008-08-27 Schlumberger Holdings Centrifugal pump
US8337746B2 (en) 2007-06-21 2012-12-25 Cooper Paul V Transferring molten metal from one structure to another
US9909808B2 (en) 2007-06-21 2018-03-06 Molten Metal Equipment Innovations, Llc System and method for degassing molten metal
US9409232B2 (en) 2007-06-21 2016-08-09 Molten Metal Equipment Innovations, Llc Molten metal transfer vessel and method of construction
US9643247B2 (en) 2007-06-21 2017-05-09 Molten Metal Equipment Innovations, Llc Molten metal transfer and degassing system
US8613884B2 (en) 2007-06-21 2013-12-24 Paul V. Cooper Launder transfer insert and system
US10458708B2 (en) 2007-06-21 2019-10-29 Molten Metal Equipment Innovations, Llc Transferring molten metal from one structure to another
US9925587B2 (en) 2007-06-21 2018-03-27 Molten Metal Equipment Innovations, Llc Method of transferring molten metal from a vessel
US9581388B2 (en) 2007-06-21 2017-02-28 Molten Metal Equipment Innovations, Llc Vessel transfer insert and system
US10352620B2 (en) 2007-06-21 2019-07-16 Molten Metal Equipment Innovations, Llc Transferring molten metal from one structure to another
US8366993B2 (en) 2007-06-21 2013-02-05 Cooper Paul V System and method for degassing molten metal
US9017597B2 (en) 2007-06-21 2015-04-28 Paul V. Cooper Transferring molten metal using non-gravity assist launder
US9855600B2 (en) 2007-06-21 2018-01-02 Molten Metal Equipment Innovations, Llc Molten metal transfer system and rotor
US9566645B2 (en) 2007-06-21 2017-02-14 Molten Metal Equipment Innovations, Llc Molten metal transfer system and rotor
US10345045B2 (en) 2007-06-21 2019-07-09 Molten Metal Equipment Innovations, Llc Vessel transfer insert and system
US9156087B2 (en) 2007-06-21 2015-10-13 Molten Metal Equipment Innovations, Llc Molten metal transfer system and rotor
US9205490B2 (en) 2007-06-21 2015-12-08 Molten Metal Equipment Innovations, Llc Transfer well system and method for making same
US9982945B2 (en) 2007-06-21 2018-05-29 Molten Metal Equipment Innovations, Llc Molten metal transfer vessel and method of construction
US10072891B2 (en) 2007-06-21 2018-09-11 Molten Metal Equipment Innovations, Llc Transferring molten metal using non-gravity assist launder
US10274256B2 (en) 2007-06-21 2019-04-30 Molten Metal Equipment Innovations, Llc Vessel transfer systems and devices
US9862026B2 (en) 2007-06-21 2018-01-09 Molten Metal Equipment Innovations, Llc Method of forming transfer well
US9383140B2 (en) 2007-06-21 2016-07-05 Molten Metal Equipment Innovations, Llc Transferring molten metal from one structure to another
US10195664B2 (en) 2007-06-21 2019-02-05 Molten Metal Equipment Innovations, Llc Multi-stage impeller for molten metal
US8753563B2 (en) 2007-06-21 2014-06-17 Paul V. Cooper System and method for degassing molten metal
US9422942B2 (en) 2009-08-07 2016-08-23 Molten Metal Equipment Innovations, Llc Tension device with internal passage
US9657578B2 (en) 2009-08-07 2017-05-23 Molten Metal Equipment Innovations, Llc Rotary degassers and components therefor
US9464636B2 (en) 2009-08-07 2016-10-11 Molten Metal Equipment Innovations, Llc Tension device graphite component used in molten metal
US9382599B2 (en) 2009-08-07 2016-07-05 Molten Metal Equipment Innovations, Llc Rotary degasser and rotor therefor
US9377028B2 (en) 2009-08-07 2016-06-28 Molten Metal Equipment Innovations, Llc Tensioning device extending beyond component
US9328615B2 (en) 2009-08-07 2016-05-03 Molten Metal Equipment Innovations, Llc Rotary degassers and components therefor
US9506129B2 (en) 2009-08-07 2016-11-29 Molten Metal Equipment Innovations, Llc Rotary degasser and rotor therefor
US9080577B2 (en) 2009-08-07 2015-07-14 Paul V. Cooper Shaft and post tensioning device
US8449814B2 (en) 2009-08-07 2013-05-28 Paul V. Cooper Systems and methods for melting scrap metal
US10428821B2 (en) 2009-08-07 2019-10-01 Molten Metal Equipment Innovations, Llc Quick submergence molten metal pump
US8535603B2 (en) 2009-08-07 2013-09-17 Paul V. Cooper Rotary degasser and rotor therefor
US8524146B2 (en) 2009-08-07 2013-09-03 Paul V. Cooper Rotary degassers and components therefor
US9470239B2 (en) 2009-08-07 2016-10-18 Molten Metal Equipment Innovations, Llc Threaded tensioning device
US8444911B2 (en) 2009-08-07 2013-05-21 Paul V. Cooper Shaft and post tensioning device
US8714914B2 (en) 2009-09-08 2014-05-06 Paul V. Cooper Molten metal pump filter
US9108244B2 (en) 2009-09-09 2015-08-18 Paul V. Cooper Immersion heater for molten metal
US10309725B2 (en) 2009-09-09 2019-06-04 Molten Metal Equipment Innovations, Llc Immersion heater for molten metal
US9410744B2 (en) 2010-05-12 2016-08-09 Molten Metal Equipment Innovations, Llc Vessel transfer insert and system
US9482469B2 (en) 2010-05-12 2016-11-01 Molten Metal Equipment Innovations, Llc Vessel transfer insert and system
GB2507307A (en) * 2012-10-25 2014-04-30 Anglia Ruskin University Impeller
US9903383B2 (en) 2013-03-13 2018-02-27 Molten Metal Equipment Innovations, Llc Molten metal rotor with hardened top
US10302361B2 (en) 2013-03-14 2019-05-28 Molten Metal Equipment Innovations, Llc Transfer vessel for molten metal pumping device
US10126059B2 (en) 2013-03-14 2018-11-13 Molten Metal Equipment Innovations, Llc Controlled molten metal flow from transfer vessel
US9587883B2 (en) 2013-03-14 2017-03-07 Molten Metal Equipment Innovations, Llc Ladle with transfer conduit
US9011761B2 (en) 2013-03-14 2015-04-21 Paul V. Cooper Ladle with transfer conduit
US10126058B2 (en) 2013-03-14 2018-11-13 Molten Metal Equipment Innovations, Llc Molten metal transferring vessel
US10052688B2 (en) 2013-03-15 2018-08-21 Molten Metal Equipment Innovations, Llc Transfer pump launder system
US10307821B2 (en) 2013-03-15 2019-06-04 Molten Metal Equipment Innovations, Llc Transfer pump launder system
US10322451B2 (en) 2013-03-15 2019-06-18 Molten Metal Equipment Innovations, Llc Transfer pump launder system
CN105723096A (en) * 2014-01-22 2016-06-29 三菱重工业株式会社 Centrifugal compressor impeller and
EP3098454A4 (en) * 2014-01-22 2017-08-16 Mitsubishi Heavy Industries, Ltd. Impeller and centrifugal compressor
US10138892B2 (en) 2014-07-02 2018-11-27 Molten Metal Equipment Innovations, Llc Rotor and rotor shaft for molten metal
CN104179722A (en) * 2014-07-21 2014-12-03 大同市益达环保节能科技发展有限责任公司 Efficient water pump impeller
US20160309620A1 (en) * 2015-04-14 2016-10-20 Fujitsu Limited Pump, cooling apparatus and electronic device
US10465688B2 (en) 2015-07-02 2019-11-05 Molten Metal Equipment Innovations, Llc Coupling and rotor shaft for molten metal devices
US10267314B2 (en) 2016-01-13 2019-04-23 Molten Metal Equipment Innovations, Llc Tensioned support shaft and other molten metal devices

Also Published As

Publication number Publication date
DE1403872A1 (en) 1969-02-13
CH398320A (en) 1966-03-15

Similar Documents

Publication Publication Date Title
Groos Brief Communications Bradford's Law and the Keenan-Atherton Data
DE1601550B2 (en) Coolable wall with porosity in particular blades for or vanes in a gas turbine
DE1253956B (en) Impeller of a fan with the edge of the turbine
GB1273234A (en) Centrifugal compressors
GB1266585A (en)
GB1115948A (en) Improvements in aerofoil vane
ES486329A1 (en) A regenerative rotodynamic machine
GB1115457A (en) Improvements in propeller fastening
GB899488A (en) Slitting device
GB1185314A (en) Improvements in or relating to Centrifugal Pumps.
GB1506957A (en) Pumps
GB1293553A (en) Radial flow fans
GB1509996A (en) Propeller blade structure
GB1324932A (en) Textile yarn carrier
DE1453726A1 (en) Gas separator, in particular for use with submersible pumps for oil and water wells
GB1483556A (en) Axial-flow fan blower or the like
GB1081164A (en) Improvements in and relating to centrifugal pumps
ES281495A1 (en) A device in francis turbines and centrifugal pumps
GB630747A (en) Improvements in or relating to multi-stage axial-flow compressors
GB981188A (en) Improved helicoidal fan
CH457042A (en) Anti-icing, in particular for the inlet guide vanes on the compressor of a jet engine
GB1430667A (en) supersonic centrifugal compressors
Wiener Estimation of nonpaternity.
GB1161298A (en) Turbomachine Rotors
GB1516876A (en) Rotary pumps