GB1296062A - - Google Patents

Info

Publication number
GB1296062A
GB1296062A GB2268169A GB1296062DA GB1296062A GB 1296062 A GB1296062 A GB 1296062A GB 2268169 A GB2268169 A GB 2268169A GB 1296062D A GB1296062D A GB 1296062DA GB 1296062 A GB1296062 A GB 1296062A
Authority
GB
United Kingdom
Prior art keywords
fluid
pump
conduits
rotor
actuator
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
GB2268169A
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 filed Critical
Publication of GB1296062A publication Critical patent/GB1296062A/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
    • 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

Landscapes

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

Abstract

1296062 Variable pitch propellers DOWTY ROTOL Ltd 6 April 1970 [3 May 1969] 22681/69 Heading B7V [Also in Division Fl] A bladed rotor for an aerial or non-aerial propeller comprises, carried within the rotor hub, a pump operable by relative rotation with respect to fixed structure during rotor rotation, valve means for controlling the flow of pressure fluid from the pump to a fluid-pressure-operable actuator for adjusting the blading, and conduit means for conducting fluid to the pump inlet, the conduit means being connectible to a source external of fluid of the rotor. The invention is described as applied to the by-pass fan rotor 11 of a gas turbine engine 15, comprising a hub 13 carrying an actuator 32 for adjusting the fan blades 12, a control valve assembly 28 for controlling the actuator, and a pump 19 for supplying hydraulic fluid to the actuator. The pump 19 is of internally-meshing lobed type with its shaft 20 fixed to stationary structure so that it operates when the fan is driven. Lubricant from the engine lubricating system is supplied to the pump 19 for use as the hydraulic fluid, stationary supply and drain conduits 22, 30 being connected to supply and drain conduits 24, 29 rotating with the fan hub via a fluid transfer means 23. Contrary to what is shown in Fig. 1, the conduit 24 surrounds the conduit 29, both conduits being coaxial with the shaft 20. Fluid is transferred in the means 23 to and from the conduits 24, 29 through a stationary ported sleeve surrounding a ported sleeve secured to and rotating with the conduits. Instead of being of variable pitch, the blades 12 may be of variable twist or camber.
GB2268169A 1969-05-03 1969-05-03 Expired GB1296062A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2268169 1969-05-03

Publications (1)

Publication Number Publication Date
GB1296062A true GB1296062A (en) 1972-11-15

Family

ID=10183389

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2268169A Expired GB1296062A (en) 1969-05-03 1969-05-03

Country Status (3)

Country Link
US (1) US3663119A (en)
FR (1) FR2046295A5 (en)
GB (1) GB1296062A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107035538A (en) * 2015-11-04 2017-08-11 通用电气公司 The hydraulic vane change mechanical actuation device that center line is installed

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1371371A (en) * 1971-04-27 1974-10-23 Defence Secretary Of States Fo Variable pitch fans or propellers particularly for gas turbine engines
GB1364293A (en) * 1971-07-06 1974-08-21 Rolls Royce Valve for follow-up servo mechanism
FR2218484B1 (en) * 1973-02-17 1976-11-26 Dowty Rotol Ltd
US3942911A (en) * 1973-02-17 1976-03-09 Dowty Rotol Limited Bladed rotors
GB1451067A (en) * 1973-02-17 1976-09-29 Dowty Rotol Ltd Gas turbine engines and bladed rotors therefor
US3893789A (en) * 1973-02-21 1975-07-08 United Aircraft Corp Pitch change actuator for a variable pitch fan propulsor
ES458039A1 (en) * 1977-04-06 1978-03-16 Mesado Francisco J L Devices for operating variable-pitch propellers
US4743162A (en) * 1986-03-04 1988-05-10 General Electric Company Fluid transfer seal for transferring fluid across a rotating boundary
GB2187526B (en) * 1986-03-04 1990-01-24 Gen Electric Improvements relating to fluid transfer seals between rotors and stators
US4750862A (en) * 1986-11-28 1988-06-14 United Technologies Corporation Modular propeller blade pitch actuation system
US4916892A (en) * 1988-05-06 1990-04-17 General Electric Company High pressure seal
US5156648A (en) * 1990-07-09 1992-10-20 General Electric Company Prop-fan pitch-change mechanism
US5152668A (en) * 1990-07-23 1992-10-06 General Electric Company Pitch change mechanism for prop fans
GB0912379D0 (en) * 2009-07-17 2009-08-26 Rolls Royce Plc Rotary coupling
FR3005096B1 (en) * 2013-04-29 2018-01-19 Safran Aircraft Engines SYSTEM FOR CONTROLLING THE PITCH OF THE BLADES OF A TURBOMACHINE PROPELLER AND A PROPELLER TURBOMACHINE FOR AN AIRCRAFT WITH SUCH A SYSTEM

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE728851C (en) * 1940-06-02 1942-12-04 Messerschmitt Boelkow Blohm Propeller actuation gear
US2276347A (en) * 1940-09-25 1942-03-17 Robert J Ruths Hub construction for hydraulic operated variable pitch propellers
US2539339A (en) * 1946-04-19 1951-01-23 Ingersoll Rand Co Controlling device for pumps
US2462932A (en) * 1946-07-26 1949-03-01 United Aircraft Corp Pitch changing mechanism
DE946590C (en) * 1953-08-14 1956-08-02 Herbert Storek Dipl Ing Hydraulic, slide-free control of axially or almost axially flowed impellers of flow machines with adjustable rotor blades
US2761281A (en) * 1954-02-18 1956-09-04 Rolls Royce Lubricating system with oil flow control for gas turbine engines
US3073514A (en) * 1956-11-14 1963-01-15 Svenska Rotor Maskiner Ab Rotary compressors
US3536415A (en) * 1969-04-18 1970-10-27 United Aircraft Corp Cyclic pitch actuator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107035538A (en) * 2015-11-04 2017-08-11 通用电气公司 The hydraulic vane change mechanical actuation device that center line is installed
US10533436B2 (en) 2015-11-04 2020-01-14 General Electric Company Centerline-mounted hydraulic pitch change mechanism actuator

Also Published As

Publication number Publication date
US3663119A (en) 1972-05-16
FR2046295A5 (en) 1971-03-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee