GB1477490A - Helicopter rotor balde - Google Patents

Helicopter rotor balde

Info

Publication number
GB1477490A
GB1477490A GB2479274A GB2479274A GB1477490A GB 1477490 A GB1477490 A GB 1477490A GB 2479274 A GB2479274 A GB 2479274A GB 2479274 A GB2479274 A GB 2479274A GB 1477490 A GB1477490 A GB 1477490A
Authority
GB
United Kingdom
Prior art keywords
helicopter rotor
balde
june
comptroller
heading
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
GB2479274A
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.)
Raytheon Technologies Corp
Original Assignee
United Technologies Corp
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
Priority claimed from US00366825A external-priority patent/US3822105A/en
Application filed by United Technologies Corp filed Critical United Technologies Corp
Publication of GB1477490A publication Critical patent/GB1477490A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors
    • B64C27/46—Blades
    • B64C27/467—Aerodynamic features

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Hydraulic Turbines (AREA)

Abstract

1477490 Helicopter rotor blade UNITED TECHNOLOGIES CORP 4 June 1974 [4 June 1973] 24792/74 Heading B7W The subject-matter of this Specification is very similar to that described in Specification 1,391,940 but differs in respect of the negative twist of the blade tip portion, which in the present specification lies within the range of - 1 and - 8 degrees. Reference has been directed by the Comptroller to Specifications 1,391,939 and 1,391,940.
GB2479274A 1973-06-04 1974-06-04 Helicopter rotor balde Expired GB1477490A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00366825A US3822105A (en) 1971-09-22 1973-06-04 Helicopter blade

Publications (1)

Publication Number Publication Date
GB1477490A true GB1477490A (en) 1977-06-22

Family

ID=23444705

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2479274A Expired GB1477490A (en) 1973-06-04 1974-06-04 Helicopter rotor balde

Country Status (8)

Country Link
JP (1) JPS51116599A (en)
BR (1) BR7404568D0 (en)
CA (1) CA988906A (en)
DE (1) DE2426689A1 (en)
FR (1) FR2231565B1 (en)
GB (1) GB1477490A (en)
IL (1) IL44661A (en)
IT (1) IT1014735B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4331982A1 (en) * 2022-08-31 2024-03-06 Lockheed Martin Corporation Method of stabilizing articulated rotor blade

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1538055A (en) * 1975-05-19 1979-01-10 Westland Aircraft Ltd Helicopter rotor blades
US4028003A (en) * 1976-04-12 1977-06-07 United Technologies Corporation Torsionally compliant helicopter rotor blade with improved stability and performance characteristics
FR2479132A1 (en) * 1980-03-25 1981-10-02 Aerospatiale HIGH PERFORMANCE BLADE FOR HELICOPTER ROTOR
DE102015121502A1 (en) 2015-12-10 2017-06-14 Christoph Fraundorfer Gyroplane rotor blade for autorotatory lift generation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3065933A (en) * 1960-05-20 1962-11-27 Frank Krause Jr A Helicopter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4331982A1 (en) * 2022-08-31 2024-03-06 Lockheed Martin Corporation Method of stabilizing articulated rotor blade

Also Published As

Publication number Publication date
FR2231565B1 (en) 1982-02-05
DE2426689A1 (en) 1974-12-12
FR2231565A1 (en) 1974-12-27
CA988906A (en) 1976-05-11
IT1014735B (en) 1977-04-30
IL44661A (en) 1976-12-31
IL44661A0 (en) 1974-09-10
JPS51116599A (en) 1976-10-14
BR7404568D0 (en) 1975-01-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee