IN169631B - - Google Patents

Info

Publication number
IN169631B
IN169631B IN520/CAL/88A IN520CA1988A IN169631B IN 169631 B IN169631 B IN 169631B IN 520CA1988 A IN520CA1988 A IN 520CA1988A IN 169631 B IN169631 B IN 169631B
Authority
IN
India
Application number
IN520/CAL/88A
Other languages
English (en)
Inventor
Alain Eric Vuillet
Jean Jacques Phillpe
Andre Desopper
Original Assignee
Aerospatiale
L Etat Dit Ets Public De
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 Aerospatiale, L Etat Dit Ets Public De filed Critical Aerospatiale
Publication of IN169631B publication Critical patent/IN169631B/en

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)
IN520/CAL/88A 1987-06-29 1988-06-27 IN169631B (en])

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
IN169631B true IN169631B (en]) 1991-11-23

Family

ID=9352630

Family Applications (1)

Application Number Title Priority Date Filing Date
IN520/CAL/88A IN169631B (en]) 1987-06-29 1988-06-27

Country Status (8)

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

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.
WO2006059472A1 (ja) * 2004-11-30 2006-06-08 Global Energy Co., Ltd. プロペラ並びに横軸風車
US7600976B2 (en) * 2005-05-31 2009-10-13 Sikorsky Aircraft Corporation Rotor blade twist distribution for a high speed rotary-wing aircraft
US7252479B2 (en) * 2005-05-31 2007-08-07 Sikorsky Aircraft Corporation Rotor blade 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
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
US7662013B2 (en) 2006-01-19 2010-02-16 Silverlit Toys Manufactory Ltd. Helicopter with horizontal control
US7883392B2 (en) 2008-08-04 2011-02-08 Silverlit Toys Manufactory Ltd. Toy helicopter
US8357023B2 (en) 2006-01-19 2013-01-22 Silverlit Limited Helicopter
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
USD790140S1 (en) 2010-10-15 2017-06-20 Spectrum Brands, Inc. Concave blade grooming tool
USD672923S1 (en) * 2010-10-15 2012-12-18 United Pet Group, Inc. Convex grooming tool blade
USD672924S1 (en) * 2010-10-15 2012-12-18 United Pet Group, Inc. Concave grooming tool blade
GB2486021B (en) 2010-12-02 2017-07-19 Agustawestland Ltd Aerofoil
IN2012DE00573A (en]) * 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
EP3108106B1 (en) * 2014-02-19 2022-05-04 Raytheon 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
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
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
EP0298826A1 (fr) 1989-01-11
EP0298826B1 (fr) 1991-07-31
BR8803308A (pt) 1989-01-24
FR2617118B1 (fr) 1992-08-21
US4880355A (en) 1989-11-14
DE3863989D1 (de) 1991-09-05
FR2617118A1 (fr) 1988-12-30
ES2024667B3 (es) 1992-03-01
JPS6422698A (en) 1989-01-25
JP2624785B2 (ja) 1997-06-25

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