IT1074464B - Perfezionamento nelle pale dei rotori di elicotteri - Google Patents

Perfezionamento nelle pale dei rotori di elicotteri

Info

Publication number
IT1074464B
IT1074464B IT7649520A IT4952076A IT1074464B IT 1074464 B IT1074464 B IT 1074464B IT 7649520 A IT7649520 A IT 7649520A IT 4952076 A IT4952076 A IT 4952076A IT 1074464 B IT1074464 B IT 1074464B
Authority
IT
Italy
Prior art keywords
blades
improvement
helicopter rotors
helicopter
rotors
Prior art date
Application number
IT7649520A
Other languages
English (en)
Original Assignee
Westland Aircraft Ltd
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 Westland Aircraft Ltd filed Critical Westland Aircraft Ltd
Application granted granted Critical
Publication of IT1074464B publication Critical patent/IT1074464B/it

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
    • B64C27/463—Blade tips

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
IT7649520A 1975-05-19 1976-05-17 Perfezionamento nelle pale dei rotori di elicotteri IT1074464B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21352/75A GB1538055A (en) 1975-05-19 1975-05-19 Helicopter rotor blades

Publications (1)

Publication Number Publication Date
IT1074464B true IT1074464B (it) 1985-04-20

Family

ID=10161450

Family Applications (1)

Application Number Title Priority Date Filing Date
IT7649520A IT1074464B (it) 1975-05-19 1976-05-17 Perfezionamento nelle pale dei rotori di elicotteri

Country Status (5)

Country Link
US (1) US4077741A (it)
DE (1) DE2621982A1 (it)
FR (1) FR2311713A1 (it)
GB (1) GB1538055A (it)
IT (1) IT1074464B (it)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4248572A (en) * 1978-12-11 1981-02-03 United Technologies Corporation Helicopter blade
US4334828A (en) * 1980-01-21 1982-06-15 United Technologies Corporation Helicopter blade with a tip having a selected combination of sweep, taper and anhedral to improve hover efficiency
US4324530A (en) * 1980-01-21 1982-04-13 United Technologies Corp. Helicopter blade with a tip having a selected combination of sweep, taper and anhedral to improve hover efficiency
DE3175016D1 (en) * 1980-03-28 1986-09-04 Westland Plc Helicopter rotor blade
FR2507149A1 (fr) * 1981-06-05 1982-12-10 Onera (Off Nat Aerospatiale) Extremite de pale pour voilure tournante d'aeronef et voilure tournante pourvue de telles extremites de pale
US4722608A (en) * 1985-07-30 1988-02-02 General Signal Corp. Mixing apparatus
GB8815955D0 (en) * 1988-07-05 1988-11-16 Westland Helicopters Helicopter rotor blades
FR2639902A1 (fr) * 1988-12-06 1990-06-08 Ferry Olivier Helice de propulsion ou de sustentation pour aeronef
JP2525836Y2 (ja) * 1989-03-29 1997-02-12 川崎重工業株式会社 回転翼用ブレードの先端部形状
GB9022271D0 (en) * 1990-10-13 1991-02-20 Westland Helicopters Helicopter rotor blades
GB9022281D0 (en) * 1990-10-13 1991-02-20 Westland Helicopters Helicopter rotor blades
GB9112835D0 (en) * 1991-06-14 1992-05-27 Westland Helicopters Helicopter rotor blades
DE4206066A1 (de) * 1992-02-27 1993-09-02 Fritz Karl Hausser Boot-schrauben, flugzeug-propellern und hubschrauber-rotor-blaettern zur verringerung des wirbels und widerstandes von wasser und luft
DE4400806A1 (de) * 1994-01-13 1995-07-20 Bernd Stolz Propeller
GB9600123D0 (en) 1996-01-04 1996-03-06 Westland Helicopters Aerofoil
GB2312712A (en) * 1996-04-30 1997-11-05 Gkn Westland Helicopters Ltd Propeller/rotor blade
FR2755941B1 (fr) 1996-11-19 1999-01-15 Eurocopter France Pale a extremite en fleche pour voilure tournante d'aeronef
JP3170470B2 (ja) 1997-03-24 2001-05-28 株式会社コミュータヘリコプタ先進技術研究所 回転翼機のロータブレード
JP3916723B2 (ja) * 1997-05-15 2007-05-23 富士重工業株式会社 回転翼航空機の回転翼羽根
US6986642B2 (en) * 2002-08-30 2006-01-17 Cartercopters, L.L.C. Extreme mu rotor
AT507091B1 (de) * 2008-09-22 2010-02-15 Walter Enthammer Strömungsmaschine

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1692081A (en) * 1925-11-24 1928-11-20 Cierva Juan De La Aircraft with rotative wings
US2152861A (en) * 1934-05-16 1939-04-04 Autogiro Co Of America Blade construction for aircraft sustaining rotors
US3066742A (en) * 1957-01-11 1962-12-04 Georgia Tech Res Inst Rotor blade
US3399731A (en) * 1967-07-18 1968-09-03 Algy F. Giles Jr. Rotor-blade
US3467197A (en) * 1968-05-07 1969-09-16 Bell Aerospace Corp Rotor blade
GB1380252A (en) * 1971-01-21 1975-01-08 Secr Defence Helicopter rotor blades
GB1391940A (en) * 1971-09-22 1975-04-23 United Aircraft Corp Helicopter rotor blades
US3721507A (en) * 1971-09-22 1973-03-20 United Aircraft Corp Blade for high speed helicopter
US3822105A (en) * 1971-09-22 1974-07-02 United Aircraft Corp Helicopter blade
CA988906A (en) * 1973-06-04 1976-05-11 United Aircraft Corporation Helicopter blade
US4012172A (en) * 1975-09-10 1977-03-15 Avco Corporation Low noise blades for axial flow compressors

Also Published As

Publication number Publication date
FR2311713A1 (fr) 1976-12-17
US4077741A (en) 1978-03-07
FR2311713B1 (it) 1982-09-17
GB1538055A (en) 1979-01-10
DE2621982C2 (it) 1987-08-13
DE2621982A1 (de) 1976-12-09

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950530