GB2014931A - Hingeless aircraft rotor blades - Google Patents

Hingeless aircraft rotor blades

Info

Publication number
GB2014931A
GB2014931A GB7904911A GB7904911A GB2014931A GB 2014931 A GB2014931 A GB 2014931A GB 7904911 A GB7904911 A GB 7904911A GB 7904911 A GB7904911 A GB 7904911A GB 2014931 A GB2014931 A GB 2014931A
Authority
GB
United Kingdom
Prior art keywords
blade
casing
hingeless
fitting
secured
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.)
Withdrawn
Application number
GB7904911A
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 Defence and Space GmbH
Original Assignee
Messerschmitt Bolkow Blohm AG
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 Messerschmitt Bolkow Blohm AG filed Critical Messerschmitt Bolkow Blohm AG
Publication of GB2014931A publication Critical patent/GB2014931A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/51—Damping of blade movements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors
    • B64C27/46—Blades
    • B64C27/473—Constructional features
    • B64C27/48—Root attachment to rotor head

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Toys (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Hinges (AREA)

Abstract

A rotor blade for an aircraft with a rotor assembly of hingeless construction has a blade neck portion (2) which affords flap and drag movements by flexure. The rotor blade has the neck portion (2) surrounded by but not connected with a casing 6 forming a continuation of the blade (1). The neck portion is integral with the blade and has the free end secured to a blade root fitting (4) with the free end of the casing secured to the fitting only through a single point connection defined by a bolt (9) aligned with the longitudinal axis of the blade and secured to the casing and fitting by respective lugs (8 and 10). The casing is torsionally rigid so that flap or drag flexure of the blade neck produces rotational movement of the blade about the torsional axis (5). <IMAGE>
GB7904911A 1978-02-14 1979-02-12 Hingeless aircraft rotor blades Withdrawn GB2014931A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2806119A DE2806119B2 (en) 1978-02-14 1978-02-14 Rotor blades, in particular for rotary wing aircraft

Publications (1)

Publication Number Publication Date
GB2014931A true GB2014931A (en) 1979-09-05

Family

ID=6031896

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7904911A Withdrawn GB2014931A (en) 1978-02-14 1979-02-12 Hingeless aircraft rotor blades

Country Status (5)

Country Link
JP (1) JPS54115900A (en)
DE (1) DE2806119B2 (en)
FR (1) FR2416840A1 (en)
GB (1) GB2014931A (en)
IT (1) IT1110445B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5788462A (en) * 1994-12-22 1998-08-04 Eurocopter France Hingeless rotor with intermediate pitch-control rings
US10301014B2 (en) * 2016-05-17 2019-05-28 Airbus Helicopters Monolithic blade, a rotorcraft rotor fitted with such a monolithic blade, and an associated rotorcraft

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3004451C2 (en) * 1980-02-07 1985-04-04 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Elastomer damping device
DE3036093C1 (en) * 1980-09-25 1982-07-29 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Rotor especially for a rotary wing aircraft
DE3123082A1 (en) * 1981-06-11 1982-12-30 Messerschmitt-Bölkow-Blohm GmbH, 8000 München "ROTOR WITH JOINT AND BEARING-FREE BLADE CONNECTION"
DE3265934D1 (en) * 1982-02-02 1985-10-10 Messerschmitt Boelkow Blohm Rotor, particularly for a rotary wing aircraft
EP0085129B1 (en) * 1982-02-02 1985-11-06 Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung Rotor, particularly for rotary wing aircraft
DE3515968C2 (en) * 1984-05-15 1995-07-13 United Technologies Corp Flexible rotor connector for a rotary wing aircraft
JP5113734B2 (en) * 2008-12-19 2013-01-09 川崎重工業株式会社 Flex beam cross section determination method and flex beam

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5788462A (en) * 1994-12-22 1998-08-04 Eurocopter France Hingeless rotor with intermediate pitch-control rings
US10301014B2 (en) * 2016-05-17 2019-05-28 Airbus Helicopters Monolithic blade, a rotorcraft rotor fitted with such a monolithic blade, and an associated rotorcraft

Also Published As

Publication number Publication date
DE2806119C3 (en) 1981-02-05
DE2806119A1 (en) 1979-08-16
JPS54115900A (en) 1979-09-08
FR2416840A1 (en) 1979-09-07
DE2806119B2 (en) 1980-06-04
IT1110445B (en) 1985-12-23
IT7920050A0 (en) 1979-02-09

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)