GB1346023A - Turbine engines or compressors and more particularly axial flor compressors - Google Patents

Turbine engines or compressors and more particularly axial flor compressors

Info

Publication number
GB1346023A
GB1346023A GB858972A GB858972A GB1346023A GB 1346023 A GB1346023 A GB 1346023A GB 858972 A GB858972 A GB 858972A GB 858972 A GB858972 A GB 858972A GB 1346023 A GB1346023 A GB 1346023A
Authority
GB
United Kingdom
Prior art keywords
blade
compressors
stage
rod
oscillated
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
GB858972A
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.)
Safran Aircraft Engines SAS
Original Assignee
SNECMA SAS
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
Application filed by SNECMA SAS filed Critical SNECMA SAS
Publication of GB1346023A publication Critical patent/GB1346023A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D7/00—Rotors with blades adjustable in operation; Control thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
    • F04D29/322—Blade mountings
    • F04D29/323—Blade mountings adjustable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/36—Application in turbines specially adapted for the fan of turbofan engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05D2260/74—Adjusting of angle of incidence or attack of rotating blades by turning around an axis perpendicular the rotor centre line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05D2260/76—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism using auxiliary power sources
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

1346023 Axial flow compressors SOC NATIONALE D'ETUDE ET DE CONSTRUCTIONS DE MOTEURS D'AVIATION 24 Feb 1972 [25 Feb 1971] 8589/72 Headings F1C and FIT In a turbine engine or axial-flow compressor each blade of a set forming a stage is oscillationed about a radial axis to increase the performance of the stage by the Katzmayr effect. The frequency and/or amplitude of the oscillations are controlled in accordance with the reduced rotation speed N/#T and/or the ratio of downstream to upstream pressures P 2 /P 1 of the stage. The stator and/or rotor blades of one or more stages may be oscillated. As shown in Fig. 1 controller 9 for electric motor 8 receives signals 10, 11 according to P 2 /P 1 and N/#T values and causes motor 8 to provide an oscillatory rotary motion of corresponding amplitude and frequency which is transmitted to the blade 2 via shafts, pinions and crown wheel 6. In Fig. 2 the blade is oscillated through a rack 20a and pinion 19. The rod 20 is reciprocated by co-operating cam surfaces 22, 22a provided on plates 23, 23a which are rotated by motor 25. In Fig.4 rod 29 and blade root 27 are provided with corresponding large pitch threads so that when the rod reciprocates radially due to its inner end 29b engaging a rotating eccentrically arranged annular groove 31, the blade 2 oscillates pivotally. (For Figures see next page)
GB858972A 1971-02-25 1972-02-24 Turbine engines or compressors and more particularly axial flor compressors Expired GB1346023A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7106496A FR2126109B1 (en) 1971-02-25 1971-02-25

Publications (1)

Publication Number Publication Date
GB1346023A true GB1346023A (en) 1974-02-06

Family

ID=9072486

Family Applications (1)

Application Number Title Priority Date Filing Date
GB858972A Expired GB1346023A (en) 1971-02-25 1972-02-24 Turbine engines or compressors and more particularly axial flor compressors

Country Status (3)

Country Link
DE (1) DE2208724A1 (en)
FR (1) FR2126109B1 (en)
GB (1) GB1346023A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2523928C2 (en) * 2009-02-27 2014-07-27 Снекма Fan blades with variable pitch angle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2942644B1 (en) * 2009-02-27 2011-05-13 Snecma BLOWING BLOWERS WITH CYCLIC TIMING.
FR2942645B1 (en) * 2009-02-27 2011-04-01 Snecma BLOWING BLOWER WITH CYCLIC TIMING APPLIED BY A GUIDE TRACK.
FR2976982B1 (en) * 2011-06-23 2015-02-27 Snecma BLOWER FOR TURBOJET ENGINE

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1596504A (en) * 1968-07-17 1970-06-22

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2523928C2 (en) * 2009-02-27 2014-07-27 Снекма Fan blades with variable pitch angle

Also Published As

Publication number Publication date
FR2126109B1 (en) 1975-02-21
DE2208724A1 (en) 1972-09-21
FR2126109A1 (en) 1972-10-06

Similar Documents

Publication Publication Date Title
GB1491961A (en) Balancing of gas turbine engines
GB1233718A (en)
GB1487324A (en) Gas turbine engines
GB1093568A (en) Improvements in or relating to bladed rotors such as compressor rotors
GB992941A (en) Improvements in rotary bladed compressors and turbines
GB1141816A (en) Improvements in turbofan engines having contra-rotating compressors
GB1119382A (en) Axial-flow compressors with two contra-rotatable rotors
GB1298868A (en) Improvements in or relating to turbomachines
GB1521544A (en) Pitch-change apparatus for a ducted thrust fan
GB1344598A (en) Rotor structure for turbo machines
GB1322421A (en) Gas turbine units comprising an axial-flow compressor and a fan
GB1407444A (en) Spinners for turbo machines
US3128939A (en) Szydlowski
GB1419381A (en) Fan for gas turbine engines
US2955747A (en) Supersonic axial compressors
GB1346023A (en) Turbine engines or compressors and more particularly axial flor compressors
GB1276100A (en) Bladed member for a fluid flow machine
CA2017263A1 (en) Turbine stator for a turbojet, and method of manufacture
GB692524A (en) Improvements in rotors for turbines or compressors
ES436430A1 (en) Axial flow fans
GB1335145A (en) Turbine casing for a gas turbine engine
GB1324385A (en) Supporting and angular adjusting structure for axially loaded shafts and variable blade angle bladed rotor structures
FR2291378A1 (en) Wind driven electric generator - with automatically variable pitch blades to prevent overspeed
GB585345A (en) Internal-combustion turbine plant
US3376789A (en) High speed turbine

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee