GB1306651A – Air intakes for gas turbine engines
– Google Patents
GB1306651A – Air intakes for gas turbine engines
– Google Patents
Air intakes for gas turbine engines
Info
Publication number
GB1306651A
GB1306651A
GB1306651DA
GB1306651A
GB 1306651 A
GB1306651 A
GB 1306651A
GB 1306651D A
GB1306651D A
GB 1306651DA
GB 1306651 A
GB1306651 A
GB 1306651A
Authority
GB
United Kingdom
Prior art keywords
panel
cowl
opening
parts
gas turbine
Prior art date
1971-03-02
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
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.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
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.)
1971-03-02
Filing date
1971-03-02
Publication date
1973-02-14
1971-03-02
Application filed by Rolls Royce PLC
filed
Critical
Rolls Royce PLC
1973-02-14
Publication of GB1306651A
publication
Critical
patent/GB1306651A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 – F02C6/00; Air intakes for jet-propulsion plants
F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
F02C7/045—Air intakes for gas-turbine plants or jet-propulsion plants having provisions for noise suppression
Abstract
1306651 Gas turbine engines air intakes ROLLS-ROYCE Ltd 2 March 1971 5802/71 Headings F1G and F1J The invention relates to an air intake for a gas turbine engine and to means of attenuating noise during certain phases of engine operation. The engine shown is a gas turbine ducted fan engine comprising a fan 14 rotatable within a duct 18 defined by a cowl member 16 which is of double-wall form, a series of openings 24 being formed in the inner wall of the cowl. Series of panel members 26, 28 are associated with each opening 24, the inner panel 26 being movable between a position in which it closes the opening 24 and an operative position radially inward of the first position. Both surfaces of the panel member 26 are covered with sound absorbing material. The outer panel 28 is formed of parts 28a, 28b pivotally connected at 30 and parts 28c, 28d pivotally connected at 32. The panel 28 is inter-connected with the panel 26 such that when the panel 26 is disposed in the opening 24, the panel 28 is retracted within the hollow interior of the cowl 16, and when the panel 26 is moved inwardly to its operative position within the air intake duct 20 the panel 28 is moved inwardly so as to be disposed within the opening 24. The inner surface of the panel 28 is covered with sound absorbing material. The panel 28 is formed of four parts 28a, 28b, 28c, 28d the parts 28a, 28b being hingedly connected at 30 and the parts 28c, 28d being hingedly connected at 32. A link 36 is pivotally connected to the panel 26 at 40 and to the panel member 28a the link being enclosed within a fairing 34. Similarly a pair of links 36a, 36b is pivotally mounted on the panel 26 and is secured to the panel member 28c, the links being enclosed within fairings 34a, 34b. Actuators 54 are connected by linkage 56, 38a to the links 36a, 36b and by linkage 56, 58, 60, 62, 38 to the links 36. The rearward end of the panel member 28b carries rollers 42 which engage in cam grooves 44 in fixed structure. Similarly the panel member 28d carries rollers 42a which engage in cam grooves 44a in fixed structure. The arrangement is such that the panel members are movable between the retracted position shown in broken lines towards an operative position as indicated by full lines. In a second embodiment the outer panel 74 is formed in one piece and is pivotally mounted at its rearward end 76 to the cowl 16. Bellcrank levers 80, 82 are pivotally connected to the panel at points 84, one arm of each bellcrank lever being pivotally connected to the inner panel member 70 and the other arms of the two bellcrank levers being connected by a link 92. The forward end of the link 92 carries a roller 86 which engages in a cam groove 88 formed in fixed structure. An actuator 78 is connected to the outer panel 74 and the arrangement is such that as the outer panel 74 is pivoted inwardly so as to be disposed within the opening 72 in the cowl wall the inner panel 70 is moved to an operative position within the duct and parallel to the inner wall of the cowl.
GB1306651D
1971-03-02
1971-03-02
Air intakes for gas turbine engines
Expired
GB1306651A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB580271
1971-03-02
Publications (1)
Publication Number
Publication Date
GB1306651A
true
GB1306651A
(en)
1973-02-14
Family
ID=9802893
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1306651D
Expired
GB1306651A
(en)
1971-03-02
1971-03-02
Air intakes for gas turbine engines
Country Status (1)
Country
Link
GB
(1)
GB1306651A
(en)
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2482663A1
(en)
*
1980-05-17
1981-11-20
Rolls Royce
MULTI-LAYER ACOUSTIC INSULATION COATING
GB2266340A
(en)
*
1992-04-16
1993-10-27
Halton Oy
Air flow regulating and silencing apparatus
1971
1971-03-02
GB
GB1306651D
patent/GB1306651A/en
not_active
Expired
Cited By (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2482663A1
(en)
*
1980-05-17
1981-11-20
Rolls Royce
MULTI-LAYER ACOUSTIC INSULATION COATING
GB2266340A
(en)
*
1992-04-16
1993-10-27
Halton Oy
Air flow regulating and silencing apparatus
GB2266340B
(en)
*
1992-04-16
1996-03-06
Halton Oy
A method and a device for the regulation and sound reduction of an air flow
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Legal Events
Date
Code
Title
Description
1973-06-27
PS
Patent sealed
1976-09-29
PLNP
Patent lapsed through nonpayment of renewal fees
