FR2427494A1 - Large dia. fan blade - has lengthwise member with plastics honeycomb cores forming leading and trailing edges - Google Patents

Large dia. fan blade - has lengthwise member with plastics honeycomb cores forming leading and trailing edges

Info

Publication number
FR2427494A1
FR2427494A1 FR7817415A FR7817415A FR2427494A1 FR 2427494 A1 FR2427494 A1 FR 2427494A1 FR 7817415 A FR7817415 A FR 7817415A FR 7817415 A FR7817415 A FR 7817415A FR 2427494 A1 FR2427494 A1 FR 2427494A1
Authority
FR
France
Prior art keywords
blade
trailing edges
fan blade
faces
honeycomb cores
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.)
Pending
Application number
FR7817415A
Other languages
French (fr)
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.)
NEU SA
Original Assignee
NEU SA
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 NEU SA filed Critical NEU SA
Priority to FR7817415A priority Critical patent/FR2427494A1/en
Publication of FR2427494A1 publication Critical patent/FR2427494A1/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F04D29/38—Blades
    • F04D29/388—Blades characterised by construction
    • 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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • F01D5/282—Selecting composite materials, e.g. blades with reinforcing filaments

Abstract

To the sides of the blade, the member has opposite faces (5, 6) shaped to conform with the upper and lower faces of the blade, while its two other faces (7, 8) are parallel to the axis of rotation of the fan when the blade is set at a zero incidence angle. At the hub end, the member extends beyond the blade in the form of a sleeve changing progressively from cylindrical to rectangular shape. Two honeycomb plastics cores (15, 16) are glued to the parallel faces of the member so as to form the leading and trailing edges, and the complete blade is finally encased in a reinforced resin skin adhering to all its components.
FR7817415A 1978-06-01 1978-06-01 Large dia. fan blade - has lengthwise member with plastics honeycomb cores forming leading and trailing edges Pending FR2427494A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7817415A FR2427494A1 (en) 1978-06-01 1978-06-01 Large dia. fan blade - has lengthwise member with plastics honeycomb cores forming leading and trailing edges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7817415A FR2427494A1 (en) 1978-06-01 1978-06-01 Large dia. fan blade - has lengthwise member with plastics honeycomb cores forming leading and trailing edges

Publications (1)

Publication Number Publication Date
FR2427494A1 true FR2427494A1 (en) 1979-12-28

Family

ID=9209335

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7817415A Pending FR2427494A1 (en) 1978-06-01 1978-06-01 Large dia. fan blade - has lengthwise member with plastics honeycomb cores forming leading and trailing edges

Country Status (1)

Country Link
FR (1) FR2427494A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997039243A1 (en) * 1996-04-17 1997-10-23 ABB Fläkt AB Vane element
EP2071193A1 (en) * 2007-12-10 2009-06-17 Cofimco S.R.L. Composite shank for axial fan blades

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918977A (en) * 1956-06-25 1959-12-29 Koppers Co Inc Blade assembly
FR2016849A1 (en) * 1968-08-01 1970-05-15 Dowty Rotol Ltd
FR2186380A1 (en) * 1972-05-31 1974-01-11 United Aircraft Corp

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918977A (en) * 1956-06-25 1959-12-29 Koppers Co Inc Blade assembly
FR2016849A1 (en) * 1968-08-01 1970-05-15 Dowty Rotol Ltd
FR2186380A1 (en) * 1972-05-31 1974-01-11 United Aircraft Corp

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/70 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997039243A1 (en) * 1996-04-17 1997-10-23 ABB Fläkt AB Vane element
EP2071193A1 (en) * 2007-12-10 2009-06-17 Cofimco S.R.L. Composite shank for axial fan blades
WO2009074568A2 (en) * 2007-12-10 2009-06-18 Cofimco S.R.L. Composite shank for axial fan blades
WO2009074568A3 (en) * 2007-12-10 2009-08-27 Cofimco S.R.L. Composite shank for axial fan blades

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