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1. (WO1991005700) ROTOR BLADE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/005700 International Application No.: PCT/US1990/005171
Publication Date: 02.05.1991 International Filing Date: 17.09.1990
IPC:
B64C 27/48 (2006.01) ,F01D 5/14 (2006.01) ,F01D 5/28 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
64
AIRCRAFT; AVIATION; COSMONAUTICS
C
AEROPLANES; HELICOPTERS
27
Rotorcraft; Rotors peculiar thereto
32
Rotors
46
Blades
473
Constructional features
48
Root attachment to rotor head
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
D
NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5
Blades; Blade-carrying members; Heating, heat-insulating, cooling, or antivibration means on the blades or the members
12
Blades
14
Form or construction
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
D
NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5
Blades; Blade-carrying members; Heating, heat-insulating, cooling, or antivibration means on the blades or the members
12
Blades
28
Selecting particular materials; Measures against erosion or corrosion
Applicants:
BELL HELICOPTER TEXTRON INC. [US/US]; 600 East Hurst Boulevard Fort Worth, TX 76053, US
Inventors:
COVINGTON, Cecil, Edward; US
SCHELLHASE, Ernst, Calvin; US
ROBINSON, Madison, Keith; US
Agent:
HITCHCOCK, David, L. ; Richards, Medlock & Andrews 4500 Renaissance Tower 1201 Elm Street Dallas, TX 75270-2197, US
Priority Data:
422,11816.10.1989US
Title (EN) ROTOR BLADE
(FR) PALE DE ROTOR
Abstract:
(EN) A composite rotor blade (10) comprising an outboard portion (12) defining an airfoil surface, an inboard portion (16) defining an end tang having a mounting section (18) and an extension lug section (20). The mounting section of the end tang having at least one mounting aperture (26) with an axis parallel to the chordline of the airfoil for mounting of the blade and the extension lug section having at least one extension lug (30) extending inboard of the mounting aperture to provide a lever surface for interaction with suitable mounting mechanisms.
(FR) La pale de rotor décrite (10) comprend une partie sortante (12) définissant un plan aérodynamique, ainsi qu'une partie rentrante (16) définissant une queue d'attache comportant une section de montage (18) et une section oreille de rallonge (20). La section de montage de la queue d'attache est pourvue d'au moins une ouverture de montage (26) avec un axe parallèle à la corde d'aile du plan aérodynamique pour permettre le montage de la pale, et la section oreille de rallonge comporte au moins une oreille de rallonge (30) s'étendant en dedans de l'ouverture de montage de façon à former une surface de levier destinée à coopérer avec les mécanismes de montage appropriés.
Designated States: AU, BR, CA, JP, KR, NO
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0448705JP3303237AU1990067232