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GB1279692A - Improvements in or relating to laminates - Google Patents

Improvements in or relating to laminates

Info

Publication number
GB1279692A
GB1279692A GB57276/69A GB5727669A GB1279692A GB 1279692 A GB1279692 A GB 1279692A GB 57276/69 A GB57276/69 A GB 57276/69A GB 5727669 A GB5727669 A GB 5727669A GB 1279692 A GB1279692 A GB 1279692A
Authority
GB
United Kingdom
Prior art keywords
duct
apertures
cellular structure
laminate
walls
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
GB57276/69A
Inventor
Richard James Flatman
Wilfred Selwyn Whawell
Jack Robert Reading
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.)
Filing date
Publication date
Application filed by Rolls Royce PLC filed Critical Rolls Royce PLC
Priority to GB57276/69A priority Critical patent/GB1279692A/en
Priority to DE19702057573 priority patent/DE2057573A1/en
Priority to FR7041970A priority patent/FR2080347A5/fr
Publication of GB1279692A publication Critical patent/GB1279692A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • 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
    • F02C7/24—Heat or noise insulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/02—Cellular or porous
    • B32B2305/024—Honeycomb
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Laminated Bodies (AREA)

Abstract

1279692 Laminates ROLLS-ROYCE Ltd 22 Nov 1969 57276/69 Heading B5N [Also in Divisions E1 F1 and F2] A laminate comprises a porous layer 2 e.g. of compressed wire wool or of a material made porous by drilling holes there through, an impervious layer 3 and a cellular structure 4 having walls 5 defining a plurality of cells 6, the cellular structure being attached to and located between the said two layers and having apertures 7 formed in opposed walls of each cell, the apertures being arranged in parallel lines. The cellular structure may consist of a plurality of corrugated strips welded together at their lines of contact. A drainage duct may be provided in communication with the apertures so that a fluid in anyone of the cells can drain into the drainage duct through the apertures. In a preferred embodiment, the laminate may be formed into or form part of a tapering duct, the apertures lying in a substantially circumferential plane with the drainage duct located at the lowest part of the tapering duct. The drainage duct may be provided by deforming the walls of axially adjacent cells and the impervious outer layer may be stressed to form the outer surface of the duct. The tapering duct may form the exhaust collector of a gas turbine engine; alternatively the laminate may be in the form of an acoustic lining.
GB57276/69A 1969-11-22 1969-11-22 Improvements in or relating to laminates Expired GB1279692A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB57276/69A GB1279692A (en) 1969-11-22 1969-11-22 Improvements in or relating to laminates
DE19702057573 DE2057573A1 (en) 1969-11-22 1970-11-23 Cell structure for a gas turbine engine
FR7041970A FR2080347A5 (en) 1969-11-22 1970-11-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB57276/69A GB1279692A (en) 1969-11-22 1969-11-22 Improvements in or relating to laminates

Publications (1)

Publication Number Publication Date
GB1279692A true GB1279692A (en) 1972-06-28

Family

ID=10478806

Family Applications (1)

Application Number Title Priority Date Filing Date
GB57276/69A Expired GB1279692A (en) 1969-11-22 1969-11-22 Improvements in or relating to laminates

Country Status (3)

Country Link
DE (1) DE2057573A1 (en)
FR (1) FR2080347A5 (en)
GB (1) GB1279692A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4035535A (en) * 1975-02-14 1977-07-12 Rolls-Royce (1971) Limited Sound attenuating structure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2752392B1 (en) * 1996-08-14 1999-04-23 Hispano Suiza Sa VENTILATED HONEYCOMB SANDWICH PANEL AND VENTILATION METHOD FOR SUCH A PANEL

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4035535A (en) * 1975-02-14 1977-07-12 Rolls-Royce (1971) Limited Sound attenuating structure

Also Published As

Publication number Publication date
DE2057573A1 (en) 1971-07-08
FR2080347A5 (en) 1971-11-12

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Legal Events

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