DE69301241T2 - Rotor mit veränderlichem durchmesser und mit verschobener verdrehung - Google Patents

Rotor mit veränderlichem durchmesser und mit verschobener verdrehung

Info

Publication number
DE69301241T2
DE69301241T2 DE69301241T DE69301241T DE69301241T2 DE 69301241 T2 DE69301241 T2 DE 69301241T2 DE 69301241 T DE69301241 T DE 69301241T DE 69301241 T DE69301241 T DE 69301241T DE 69301241 T2 DE69301241 T2 DE 69301241T2
Authority
DE
Germany
Prior art keywords
section
inboard
twist
outboard
rotor
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 - Fee Related
Application number
DE69301241T
Other languages
English (en)
Other versions
DE69301241D1 (de
Inventor
Evan Fradenburgh
S Davis
Robert Moffitt
Joseph Visintainer
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
Application filed by United Technologies Corp filed Critical United Technologies Corp
Application granted granted Critical
Publication of DE69301241D1 publication Critical patent/DE69301241D1/de
Publication of DE69301241T2 publication Critical patent/DE69301241T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
DE69301241T 1992-06-01 1993-05-26 Rotor mit veränderlichem durchmesser und mit verschobener verdrehung Expired - Fee Related DE69301241T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/891,577 US5253979A (en) 1992-06-01 1992-06-01 Variable diameter rotor having an offset twist
PCT/US1993/004985 WO1993024365A1 (en) 1992-06-01 1993-05-26 Variable diameter rotor having an offset twist

Publications (2)

Publication Number Publication Date
DE69301241D1 DE69301241D1 (de) 1996-02-15
DE69301241T2 true DE69301241T2 (de) 1996-07-04

Family

ID=25398452

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69301241T Expired - Fee Related DE69301241T2 (de) 1992-06-01 1993-05-26 Rotor mit veränderlichem durchmesser und mit verschobener verdrehung

Country Status (8)

Country Link
US (1) US5253979A (de)
EP (1) EP0642441B1 (de)
JP (1) JPH07507256A (de)
AT (1) ATE132448T1 (de)
CA (1) CA2134747C (de)
DE (1) DE69301241T2 (de)
RU (1) RU2130406C1 (de)
WO (1) WO1993024365A1 (de)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5655879A (en) * 1995-03-28 1997-08-12 Sikorsky Aircraft Corporation Mounting arrangement for variable diameter rotor blade assemblies
US5636969A (en) * 1995-03-28 1997-06-10 Sikorsky Aircraft Corporation Torque tube/spar assembly for variable diameter helicopter rotors
US5642982A (en) * 1995-12-11 1997-07-01 Sikorsky Aircraft Corporation Retraction/extension mechanism for variable diameter rotors
US5735670A (en) * 1995-12-11 1998-04-07 Sikorsky Aircraft Corporation Rotor system having alternating length rotor blades and positioning means therefor for reducing blade-vortex interaction (BVI) noise
US5620304A (en) * 1995-12-11 1997-04-15 Sikorsky Aircraft Corporation Rotor system having alternating length rotor blades and positioning means therefor for reducing blade-vortex interaction (BVI) noise
US5620303A (en) * 1995-12-11 1997-04-15 Sikorsky Aircraft Corporation Rotor system having alternating length rotor blades for reducing blade-vortex interaction (BVI) noise
DE29602559U1 (de) * 1996-02-14 1996-04-18 Kaehler Kai Drehflügelluftfahrzeug
US6884034B1 (en) 1998-04-07 2005-04-26 University Of Central Florida Enhancements to high efficiency ceiling fan
US6659721B1 (en) 1998-04-07 2003-12-09 University Of Central Florida High efficiency ceiling fan blades
US6039541A (en) * 1998-04-07 2000-03-21 University Of Central Florida High efficiency ceiling fan
US7396212B1 (en) 1998-04-07 2008-07-08 University Of Central Florida Research Foundation, Inc. High efficiency twisted leaf blade ceiling fan
US7210910B1 (en) 1998-04-07 2007-05-01 Research Foundation Of The University Of Central Florida, Inc. Enhancements to high efficiency ceiling fan
US6030177A (en) 1998-12-18 2000-02-29 Sikorsky Aircraft Corporation Drive system for a variable diameter tilt rotor
US6019578A (en) 1998-12-18 2000-02-01 Sikorsky Aircraft Corporation Variable diameter rotor blade actuation system
KR20020034793A (ko) * 2000-11-01 2002-05-09 김창환 헬기의 이륙 가속방법
US6671590B1 (en) * 2001-04-30 2003-12-30 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method and system for active noise control of tiltrotor aircraft
US6726439B2 (en) 2001-08-22 2004-04-27 Clipper Windpower Technology, Inc. Retractable rotor blades for power generating wind and ocean current turbines and means for operating below set rotor torque limits
US6923622B1 (en) 2002-03-07 2005-08-02 Clipper Windpower Technology, Inc. Mechanism for extendable rotor blades for power generating wind and ocean current turbines and means for counter-balancing the extendable rotor blade
JP2005061320A (ja) * 2003-08-12 2005-03-10 Kunio Miyazaki 風力発電装置における風車構造
US7317260B2 (en) * 2004-05-11 2008-01-08 Clipper Windpower Technology, Inc. Wind flow estimation and tracking using tower dynamics
US7582977B1 (en) * 2005-02-25 2009-09-01 Clipper Windpower Technology, Inc. Extendable rotor blades for power generating wind and ocean current turbines within a module mounted atop a main blade
US7507151B1 (en) 2006-05-12 2009-03-24 University Of Central Florida Research Foundation, Inc. High efficiency solar powered fan
US7850513B1 (en) 2006-05-12 2010-12-14 University Of Central Florida Research Foundation, Inc. High efficiency solar powered fans
DE102007041649A1 (de) * 2007-09-03 2009-03-05 Daubner & Stommel GbR Bau-Werk-Planung (vertretungsberechtigter Gesellschafter: Matthias Stommel, 27777 Ganderkesee) Rotorblatt, Windenergieanlage sowie Verfahren zum Betreiben einer Windenergieanlage
FR2948631B1 (fr) * 2009-07-28 2012-01-27 Eurocopter France Procede pour reduire voire supprimer les vibrations d'un rotor de sustentation et de propulsion d'un giravion, ainsi qu'un ensemble aerodynamique et un rotor mettant en oeuvre ledit procede
US9637221B2 (en) 2009-12-21 2017-05-02 The Boeing Company Optimization of downstream open fan propeller position and placement of acoustic sensors
US8821118B2 (en) * 2009-12-21 2014-09-02 The Boeing Company Optimization of downstream open fan propeller position
EP2752577B1 (de) 2010-01-14 2020-04-01 Senvion GmbH Rotorblattkomponenten einer Windturbine und Herstellungsverfahren dafür
US10137542B2 (en) 2010-01-14 2018-11-27 Senvion Gmbh Wind turbine rotor blade components and machine for making same
DK177421B1 (en) * 2011-04-29 2013-04-22 Envision Energy Denmark Aps A Wind Turbine and Partial Pitch Wind Turbine Blade
US10822076B2 (en) 2014-10-01 2020-11-03 Sikorsky Aircraft Corporation Dual rotor, rotary wing aircraft
WO2016053408A1 (en) 2014-10-01 2016-04-07 Sikorsky Aircraft Corporation Acoustic signature variation of aircraft utilizing a clutch
JP6980962B2 (ja) * 2017-04-26 2021-12-15 国立研究開発法人宇宙航空研究開発機構 メインロータブレード及びヘリコプタ
CN109878699B (zh) * 2019-03-04 2022-02-15 吉林大学 一种跨介质飞行器螺旋桨伸缩及机头倾转装置
CN111056036B (zh) * 2019-12-27 2021-08-13 北京电子工程总体研究所 一种高空螺旋桨快速迭代生成方法
CN111674546B (zh) * 2020-06-19 2023-01-24 南京航空航天大学 一种适用于中小型无人倾转旋翼飞行器的旋翼气动外形
US11661177B2 (en) * 2020-07-23 2023-05-30 Wing Aviation Llc Fold-out propeller tip extensions

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR851766A (fr) * 1939-03-17 1940-01-15 Perfectionnements aux rotors pour aéronefs
US2450440A (en) * 1944-12-19 1948-10-05 Roscoe H Mills Propeller blade construction
FR1059072A (fr) * 1951-04-23 1954-03-22 Howden James & Co Ltd Rotor à écoulement radial de fluide applicable notamment aux ventilateurs et aux pompes
US3173490A (en) * 1962-07-25 1965-03-16 Hiller Aircraft Company Inc Propeller blade for vtol aircraft
US3297094A (en) * 1965-10-20 1967-01-10 Boeing Co Aircraft propelling assembly
FR1536732A (fr) * 1967-09-13 1968-08-16 Westland Aircraft Ltd Perfectionnements aux aéronefs combinés
CA1017729A (en) * 1968-09-12 1977-09-20 Evan A. Fradenburgh Mechanism for synchronously varying diameter of a plurality of rotors and for limiting the diameters thereof
US3768923A (en) * 1969-09-18 1973-10-30 United Aircraft Corp Variable length blade
US3713751A (en) * 1970-10-29 1973-01-30 United Aircraft Corp Aerodynamic blade with high stiffness-to-weight ratio
US3829240A (en) * 1971-05-17 1974-08-13 Textron Inc Advanced geometry main rotor blade
US3884594A (en) * 1973-12-26 1975-05-20 United Aircraft Corp Variable length blade
US4007997A (en) * 1975-11-05 1977-02-15 United Technologies Corporation Rotor diameter indicator
US4074952A (en) * 1976-06-28 1978-02-21 United Technologies Corporation Locking control and overtravel safety stop system for variable length rotor blades
US4080097A (en) * 1976-06-28 1978-03-21 United Technologies Corporation Locking control and overtravel safety stop system for variable length rotor blades
US4137010A (en) * 1977-07-25 1979-01-30 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Constant lift rotor for a heavier than air craft
US4248572A (en) * 1978-12-11 1981-02-03 United Technologies Corporation Helicopter blade
US4655685A (en) * 1985-12-16 1987-04-07 United Technologies Corporation Helicopter main rotor blade having a short span slot near the tip end

Also Published As

Publication number Publication date
CA2134747C (en) 2000-01-18
RU2130406C1 (ru) 1999-05-20
WO1993024365A1 (en) 1993-12-09
RU94046116A (ru) 1996-09-20
JPH07507256A (ja) 1995-08-10
ATE132448T1 (de) 1996-01-15
EP0642441B1 (de) 1996-01-03
CA2134747A1 (en) 1993-12-09
EP0642441A1 (de) 1995-03-15
DE69301241D1 (de) 1996-02-15
US5253979A (en) 1993-10-19

Similar Documents

Publication Publication Date Title
DE69301241T2 (de) Rotor mit veränderlichem durchmesser und mit verschobener verdrehung
US7594625B2 (en) Proprotor blade with leading edge slot
US4789306A (en) Marine propeller
US4941803A (en) Airfoiled blade
RU93004973A (ru) Лопасть со стреловидной законцовкой для несущего винта летательного аппарата
US20060104812A1 (en) Mission replaceable rotor blade tip section
US4392781A (en) High performance blade for helicopter rotor
US4844698A (en) Propeller blade
KR100211390B1 (ko) 저소음 미부 로우터
US3173490A (en) Propeller blade for vtol aircraft
US8991768B1 (en) Highly efficient transonic laminar flow wing
US2532753A (en) Transonic airfoil design
US5161953A (en) Aircraft propeller and blade element
US5791878A (en) Airfoiled blade for cargo transport aircraft
CA2503270A1 (en) Laminar flow wing for transonic cruise
US5911559A (en) Airfoiled blade for a propeller
GB2100688A (en) Airfoil construction
USRE34109E (en) Propeller blade
US1949611A (en) Propeller blade
RU2123453C1 (ru) Лопасть винта
JPH0825513B2 (ja) 船の推進装置
CN219154732U (zh) 一种桨叶、螺旋桨及飞行器
US3282352A (en) Dual air screw propeller
RU13200U1 (ru) Лопасть несущего винта вертолета
CN116522485A (zh) 一种降噪螺旋桨及优化方法

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee