DE3863989D1 - Blatt mit gebogener spitze fuer ein drehfluegelflugzeug. - Google Patents

Blatt mit gebogener spitze fuer ein drehfluegelflugzeug.

Info

Publication number
DE3863989D1
DE3863989D1 DE8888401610T DE3863989T DE3863989D1 DE 3863989 D1 DE3863989 D1 DE 3863989D1 DE 8888401610 T DE8888401610 T DE 8888401610T DE 3863989 T DE3863989 T DE 3863989T DE 3863989 D1 DE3863989 D1 DE 3863989D1
Authority
DE
Germany
Prior art keywords
sheet
curved tip
rotating plane
plane
rotating
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 - Lifetime
Application number
DE8888401610T
Other languages
German (de)
English (en)
Inventor
Alain Eric Vuillet
Jean Jacques Philippe
Andre Desopper
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.)
Office National dEtudes et de Recherches Aerospatiales ONERA
Airbus Group SAS
Original Assignee
Office National dEtudes et de Recherches Aerospatiales ONERA
Airbus Group SAS
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 Office National dEtudes et de Recherches Aerospatiales ONERA, Airbus Group SAS filed Critical Office National dEtudes et de Recherches Aerospatiales ONERA
Application granted granted Critical
Publication of DE3863989D1 publication Critical patent/DE3863989D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B64C27/463—Blade tips

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Wind Motors (AREA)
  • Toys (AREA)
DE8888401610T 1987-06-29 1988-06-24 Blatt mit gebogener spitze fuer ein drehfluegelflugzeug. Expired - Lifetime DE3863989D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8709150A FR2617118B1 (fr) 1987-06-29 1987-06-29 Pale a extremite courbe pour voilure tournante d'aeronef

Publications (1)

Publication Number Publication Date
DE3863989D1 true DE3863989D1 (de) 1991-09-05

Family

ID=9352630

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8888401610T Expired - Lifetime DE3863989D1 (de) 1987-06-29 1988-06-24 Blatt mit gebogener spitze fuer ein drehfluegelflugzeug.

Country Status (8)

Country Link
US (1) US4880355A (OSRAM)
EP (1) EP0298826B1 (OSRAM)
JP (1) JP2624785B2 (OSRAM)
BR (1) BR8803308A (OSRAM)
DE (1) DE3863989D1 (OSRAM)
ES (1) ES2024667B3 (OSRAM)
FR (1) FR2617118B1 (OSRAM)
IN (1) IN169631B (OSRAM)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8815955D0 (en) * 1988-07-05 1988-11-16 Westland Helicopters Helicopter rotor blades
FR2636593B1 (fr) * 1988-09-19 1990-11-23 Aerospatiale Pale pour voilure tournante d'aeronef et voilure tournante comportant une telle pale
GB9022281D0 (en) * 1990-10-13 1991-02-20 Westland Helicopters Helicopter rotor blades
GB9023141D0 (en) * 1990-10-24 1991-07-10 Westland Helicopters Helicopter rotor blades
US5137427A (en) * 1990-12-20 1992-08-11 United Technologies Corporation Quiet tail rotor
GB9112835D0 (en) * 1991-06-14 1992-05-27 Westland Helicopters Helicopter rotor blades
US5213287A (en) * 1991-11-04 1993-05-25 Barron David R Wing modification method and apparatus
FR2689852B1 (fr) * 1992-04-09 1994-06-17 Eurocopter France Pale pour voilure tournante d'aeronef, a extremite en fleche.
FR2755941B1 (fr) * 1996-11-19 1999-01-15 Eurocopter France Pale a extremite en fleche pour voilure tournante d'aeronef
US6024325A (en) * 1997-01-09 2000-02-15 Cartercopters, Llc Rotor for rotary wing aircraft
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
JP3189251B2 (ja) * 1999-03-12 2001-07-16 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
FR2793766B1 (fr) 1999-05-21 2001-07-13 Eurocopter France Pale pour voilure tournante d'aeronef
US6497385B1 (en) 2000-11-08 2002-12-24 Continuum Dynamics, Inc. Rotor blade with optimized twist distribution
FR2865189B1 (fr) * 2004-01-21 2007-02-16 Eurocopter France Pale de voilure tournante a double fleche et effilement limites.
EP1832744B1 (en) 2004-11-30 2019-09-18 NTN Corporation Propeller and horizontal-shaft windmill
US7252479B2 (en) * 2005-05-31 2007-08-07 Sikorsky Aircraft Corporation Rotor blade for a high speed rotary-wing aircraft
US7600976B2 (en) * 2005-05-31 2009-10-13 Sikorsky Aircraft Corporation Rotor blade twist distribution for a high speed rotary-wing aircraft
US7690895B2 (en) * 2005-07-29 2010-04-06 General Electric Company Multi-piece passive load reducing blades and wind turbines using same
US8002604B2 (en) 2006-01-19 2011-08-23 Silverlit Limited Remote controlled toy helicopter
US8357023B2 (en) 2006-01-19 2013-01-22 Silverlit Limited Helicopter
BE1016960A3 (nl) 2006-01-19 2007-11-06 Rostyne Alexander Jozef Magdal Verbeterde helikopter.
US7815482B2 (en) * 2006-01-19 2010-10-19 Silverlit Toys Manufactory, Ltd. Helicopter
US7883392B2 (en) 2008-08-04 2011-02-08 Silverlit Toys Manufactory Ltd. Toy helicopter
US7662013B2 (en) 2006-01-19 2010-02-16 Silverlit Toys Manufactory Ltd. Helicopter with horizontal control
US7513750B2 (en) * 2006-03-08 2009-04-07 Sikorsky Aircraft Corporation Rotor blade tip planform
US7762785B2 (en) * 2007-12-10 2010-07-27 Sikorsky Aircraft Corporation Main rotor blade with integral tip section
US7854595B2 (en) * 2008-07-30 2010-12-21 General Electric Company Wind turbine blade tip shapes
AT507091B1 (de) * 2008-09-22 2010-02-15 Walter Enthammer Strömungsmaschine
US8052500B2 (en) 2008-11-25 2011-11-08 Silverlit Limited Helicopter with main and auxiliary rotors
US8167567B2 (en) 2008-12-17 2012-05-01 United Technologies Corporation Gas turbine engine airfoil
USD790139S1 (en) 2010-10-15 2017-06-20 Spectrum Brands, Inc. Convex blade grooming tool
USD672924S1 (en) * 2010-10-15 2012-12-18 United Pet Group, Inc. Concave grooming tool blade
USD672923S1 (en) * 2010-10-15 2012-12-18 United Pet Group, Inc. Convex grooming tool blade
USD790140S1 (en) 2010-10-15 2017-06-20 Spectrum Brands, Inc. Concave blade grooming tool
GB2486021B (en) * 2010-12-02 2017-07-19 Agustawestland Ltd Aerofoil
IN2012DE00573A (OSRAM) * 2012-02-29 2015-06-05 Gen Electric
US9017036B2 (en) 2012-02-29 2015-04-28 United Technologies Corporation High order shaped curve region for an airfoil
US9845683B2 (en) 2013-01-08 2017-12-19 United Technology Corporation Gas turbine engine rotor blade
WO2015126449A1 (en) * 2014-02-19 2015-08-27 United Technologies Corporation Gas turbine engine airfoil
CN104044736B (zh) * 2014-07-08 2016-04-13 天津宏泽天成科技有限公司 无人直升机旋翼桨尖
US10899440B2 (en) * 2017-03-09 2021-01-26 Sikorsky Aircraft Corporation Rotor blade tip design for improved hover and cruise performance
US11498671B2 (en) 2019-05-13 2022-11-15 Lockheed Martin Corporation Replacement tip section for a rotor blade and method of replacing a rotor blade tip section
JP2024051734A (ja) * 2022-09-30 2024-04-11 本田技研工業株式会社 ブレード及びロータ

Family Cites Families (7)

* 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
US1967795A (en) * 1932-09-07 1934-07-24 Vickers Aviat Ltd Cantilever wing for aircraft
US3411738A (en) * 1966-10-27 1968-11-19 William E. Sargent Airfoil tip
US3721507A (en) * 1971-09-22 1973-03-20 United Aircraft Corp Blade for high speed helicopter
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
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
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

Also Published As

Publication number Publication date
JPS6422698A (en) 1989-01-25
EP0298826B1 (fr) 1991-07-31
US4880355A (en) 1989-11-14
EP0298826A1 (fr) 1989-01-11
JP2624785B2 (ja) 1997-06-25
FR2617118B1 (fr) 1992-08-21
ES2024667B3 (es) 1992-03-01
BR8803308A (pt) 1989-01-24
FR2617118A1 (fr) 1988-12-30
IN169631B (OSRAM) 1991-11-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition