GB1307638A - Variable pitch propeller - Google Patents

Variable pitch propeller

Info

Publication number
GB1307638A
GB1307638A GB3657470A GB3657470A GB1307638A GB 1307638 A GB1307638 A GB 1307638A GB 3657470 A GB3657470 A GB 3657470A GB 3657470 A GB3657470 A GB 3657470A GB 1307638 A GB1307638 A GB 1307638A
Authority
GB
United Kingdom
Prior art keywords
hub portion
propeller
blade
movable
variable pitch
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
GB3657470A
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.)
Airbus Group SAS
Original Assignee
Airbus Group 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 Airbus Group SAS filed Critical Airbus Group SAS
Publication of GB1307638A publication Critical patent/GB1307638A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/30—Blade pitch-changing mechanisms
    • 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
    • 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

Abstract

1307638 VTOL aircraft; variable pitch propeller SOC NATIONALE INDUSTRIELLE AEROSPATIALE 28 July 1970 [29 July 1969] 36574/70 Headings B7G and B7V [Also in Division F1] A variable pitch propeller has a stationary hub portion 9, a rotating hub portion 8 carrying a plurality of blades 1 (one is shown) and a movable hub portion 11 rotated by the rotating hub portion 8 and connected to each blade 1 by a link 25 which is in turn connected to a pivot 28 fast with the movable hub portion 11 and a pivot 27 offset on each blade, Fig, 3 (not shown), whereby collective pitch change is effected on movement of a connection 12, 16 of variable length, having a rotary joint 17. The rotating hub portion 8 rotates both the movable hub portion 11 by means of guide pins 23 on which the movable hub portion can slide and a propeller shroud 6 by means of struts 14. The variable length connection comprises an electric hydraulic actuator 12 fast with the stationary hub portion and an actuator screw 16 connected to the rotary joint 17, which moves the end 29 of the hub portion 11 between limit positions 30, 31. Each blade 1 is mounted in two sets of bearings 18 and 22, the bearings 18 taking the weight of the blade. The propeller may form part of a turbojet mounted on a tiltable wing (3), Fig. 1 (not shown), of a V.T.O.L. aircraft, wherein elevator type control surfaces (4) positioned in the efflux from the propeller produce the moment required to swivel the wing.
GB3657470A 1969-07-29 1970-07-28 Variable pitch propeller Expired GB1307638A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6925977A FR2050366A1 (en) 1969-07-29 1969-07-29

Publications (1)

Publication Number Publication Date
GB1307638A true GB1307638A (en) 1973-02-21

Family

ID=9038256

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3657470A Expired GB1307638A (en) 1969-07-29 1970-07-28 Variable pitch propeller

Country Status (4)

Country Link
CA (1) CA925492A (en)
DE (1) DE2037723A1 (en)
FR (1) FR2050366A1 (en)
GB (1) GB1307638A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260369A (en) * 1991-08-30 1993-04-14 United Technologies Corp Jet propulsion system having ejector shroud
CN112478135A (en) * 2020-12-03 2021-03-12 中国航天空气动力技术研究院 Connecting structure of propeller blade and variable pitch device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260369A (en) * 1991-08-30 1993-04-14 United Technologies Corp Jet propulsion system having ejector shroud
GB2260369B (en) * 1991-08-30 1994-07-06 United Technologies Corp Propulsion system assembly
CN112478135A (en) * 2020-12-03 2021-03-12 中国航天空气动力技术研究院 Connecting structure of propeller blade and variable pitch device

Also Published As

Publication number Publication date
CA925492A (en) 1973-05-01
DE2037723A1 (en) 1971-02-04
FR2050366A1 (en) 1971-04-02

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees