CH652980A5 - Hubschrauberrotorblatt. - Google Patents
Hubschrauberrotorblatt. Download PDFInfo
- Publication number
- CH652980A5 CH652980A5 CH263/81A CH26381A CH652980A5 CH 652980 A5 CH652980 A5 CH 652980A5 CH 263/81 A CH263/81 A CH 263/81A CH 26381 A CH26381 A CH 26381A CH 652980 A5 CH652980 A5 CH 652980A5
- Authority
- CH
- Switzerland
- Prior art keywords
- blade
- tip
- rotor
- radius
- rotor blade
- Prior art date
Links
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 description 11
- 238000010408 sweeping Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000036961 partial effect Effects 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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)
- Toys (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/114,131 US4324530A (en) | 1980-01-21 | 1980-01-21 | Helicopter blade with a tip having a selected combination of sweep, taper and anhedral to improve hover efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH652980A5 true CH652980A5 (de) | 1985-12-13 |
Family
ID=22353519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH263/81A CH652980A5 (de) | 1980-01-21 | 1981-01-16 | Hubschrauberrotorblatt. |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4324530A (Direct) |
| JP (1) | JPS56167599A (Direct) |
| AU (1) | AU536734B2 (Direct) |
| CA (1) | CA1143354A (Direct) |
| CH (1) | CH652980A5 (Direct) |
| DE (1) | DE3100800A1 (Direct) |
| ES (1) | ES8203288A1 (Direct) |
| FR (1) | FR2473983A1 (Direct) |
| GB (1) | GB2067493B (Direct) |
| IL (1) | IL61879A (Direct) |
| IT (1) | IT1135095B (Direct) |
Families Citing this family (56)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| FR2617118B1 (fr) * | 1987-06-29 | 1992-08-21 | Aerospatiale | Pale a extremite courbe pour voilure tournante d'aeronef |
| GB8815955D0 (en) * | 1988-07-05 | 1988-11-16 | Westland Helicopters | Helicopter rotor blades |
| 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 |
| US5190441A (en) * | 1990-08-13 | 1993-03-02 | General Electric Company | Noise reduction in aircraft propellers |
| 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 |
| US5320494A (en) * | 1992-12-22 | 1994-06-14 | United Technologies Corporation | Helicopter rotor blade having a replaceable anhedral tip |
| DE4400806A1 (de) * | 1994-01-13 | 1995-07-20 | Bernd Stolz | Propeller |
| AUPN163795A0 (en) * | 1995-03-10 | 1995-04-06 | DIPNALL, David | A device for extracting energy from moving water particles |
| GB9600123D0 (en) * | 1996-01-04 | 1996-03-06 | Westland Helicopters | Aerofoil |
| DE29602559U1 (de) * | 1996-02-14 | 1996-04-18 | Kähler, Kai, 20355 Hamburg | Drehflügelluftfahrzeug |
| FR2755941B1 (fr) | 1996-11-19 | 1999-01-15 | Eurocopter France | Pale a extremite en fleche pour voilure tournante d'aeronef |
| US5885059A (en) * | 1996-12-23 | 1999-03-23 | Sikorsky Aircraft Corporation | Composite tip cap assembly for a helicopter main rotor blade |
| 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 |
| US6200096B1 (en) | 1999-04-16 | 2001-03-13 | Sikorsky Aircraft Corporation | Actuation system for an active rotor control system |
| US6295006B1 (en) | 1999-04-16 | 2001-09-25 | Sikorsky Aircraft Corporation | Flap angle measurement system for an active rotor control system |
| US6196796B1 (en) | 1999-04-22 | 2001-03-06 | Sikorsky Aircraft Corporation | High torque actuation system for an active rotor control system |
| US6354536B1 (en) | 2000-08-08 | 2002-03-12 | Sikorsky Aircraft Corporation | Rotor hub mounted actuator for controlling a blade on a rotorcraft |
| US6497385B1 (en) | 2000-11-08 | 2002-12-24 | Continuum Dynamics, Inc. | Rotor blade with optimized twist distribution |
| KR20050088325A (ko) * | 2003-01-02 | 2005-09-05 | 알로이즈 우벤 | 풍력 발전 플랜트를 위한 회전자 날개 |
| DE10300284A1 (de) * | 2003-01-02 | 2004-07-15 | Aloys Wobben | Rotorblatt für eine Windenergieanlage |
| DE20301445U1 (de) * | 2003-01-30 | 2004-06-09 | Moser, Josef | Rotorblatt |
| DE10332875B4 (de) * | 2003-07-19 | 2016-11-24 | Windreich GmbH | Rotorflügelblatt |
| RU2253506C1 (ru) * | 2003-10-22 | 2005-06-10 | Орловский государственный технический университет (ОрелГТУ) | Пропеллерная мешалка конструкции землякова н.в. для перемешивания жидких сред |
| JP2005335621A (ja) * | 2004-05-28 | 2005-12-08 | Fuji Heavy Ind Ltd | ヘリコプタのロータブレード |
| JP4740580B2 (ja) * | 2004-11-30 | 2011-08-03 | 株式会社ベルシオン | 横軸風車のブレード並びに横軸風車 |
| JP5348822B2 (ja) * | 2005-09-15 | 2013-11-20 | 株式会社ベルシオン | 横軸プロペラ |
| WO2006059472A1 (ja) * | 2004-11-30 | 2006-06-08 | Global Energy Co., Ltd. | プロペラ並びに横軸風車 |
| US7513750B2 (en) * | 2006-03-08 | 2009-04-07 | Sikorsky Aircraft Corporation | Rotor blade tip planform |
| MX2009009244A (es) | 2007-03-01 | 2009-09-08 | Delta T Corp | Extension angular de plano aerodinamico para aspa de ventilador. |
| US7762785B2 (en) * | 2007-12-10 | 2010-07-27 | Sikorsky Aircraft Corporation | Main rotor blade with integral tip section |
| DE102007062490B4 (de) * | 2007-12-20 | 2011-07-28 | Eurocopter Deutschland GmbH, 86609 | Rotorblatt für ein Drehflügelflugzeug |
| US8066219B2 (en) * | 2008-04-25 | 2011-11-29 | Karem Aircraft, Inc. | Anhedral tip blades for tiltrotor aircraft |
| US8419371B2 (en) * | 2008-05-30 | 2013-04-16 | General Electric Company | Wind turbine blades with twisted and tapered tips |
| US8858183B2 (en) * | 2010-02-26 | 2014-10-14 | Sikorsky Aircraft Corporation | Rotor blade for a rotary-wing aircraft |
| US20120128501A1 (en) * | 2010-11-23 | 2012-05-24 | 4Front Engineered Solutions, Inc. | Fan blade tips |
| GB2486021B (en) * | 2010-12-02 | 2017-07-19 | Agustawestland Ltd | Aerofoil |
| JP5602060B2 (ja) * | 2011-02-28 | 2014-10-08 | 三菱重工業株式会社 | 風車翼およびこれを備えた風力発電装置ならびに風車翼の設計方法 |
| US8842000B2 (en) | 2012-07-17 | 2014-09-23 | 4Front Engineered Solutions, Inc. | Fire control systems |
| FR3005301B1 (fr) * | 2013-05-03 | 2015-05-29 | Eurocopter France | Rotor carene d'aeronef, et giravion |
| EP2821634A1 (en) * | 2013-07-05 | 2015-01-07 | youWINenergy GmbH | Mountable wing tip device for mounting on a rotor blade of a wind turbine arrangement |
| US9874214B2 (en) | 2014-01-28 | 2018-01-23 | 4Front Engineered Solutions, Inc. | Fan with fan blade mounting structure |
| US9726192B2 (en) | 2015-03-31 | 2017-08-08 | Assa Abloy Entrance Systems Ab | Fan blades and associated blade tips |
| US10414486B2 (en) | 2015-11-30 | 2019-09-17 | General Electric Company | Airfoil for a rotary machine including a propellor assembly |
| EP3293113B1 (en) | 2016-09-07 | 2018-12-12 | LEONARDO S.p.A. | Rotor for a hover-capable aircraft and related method of control |
| US10207793B2 (en) | 2016-11-30 | 2019-02-19 | Bell Helicopter Textron Inc. | Rotor blade having variable twist |
| 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 |
| CN115343003B (zh) * | 2022-04-29 | 2025-08-29 | 南京航空航天大学 | 基于桨叶剖面测量弯矩的直升机桨叶动载荷识别方法 |
| FR3137136B1 (fr) * | 2022-06-28 | 2025-07-11 | Sas Flexeole | Pale d'éolienne ayant une forme d'extrémité optimisée |
| JP7793500B2 (ja) * | 2022-09-30 | 2026-01-05 | 本田技研工業株式会社 | ブレード及びロータ |
| US12448111B1 (en) * | 2024-04-17 | 2025-10-21 | Textron Innovations Inc. | Method and system for inverse-tapered high-speed rotors |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3399731A (en) * | 1967-07-18 | 1968-09-03 | Algy F. Giles Jr. | Rotor-blade |
| US3558081A (en) * | 1969-02-20 | 1971-01-26 | Airmarine Corp | Airborne vehicles |
| US3721507A (en) * | 1971-09-22 | 1973-03-20 | United Aircraft Corp | Blade for high speed helicopter |
| GB1538055A (en) * | 1975-05-19 | 1979-01-10 | Westland Aircraft Ltd | Helicopter rotor blades |
| US4130377A (en) * | 1977-07-13 | 1978-12-19 | United Technologies Corporation | Helicopter blade and rotor |
-
1980
- 1980-01-21 US US06/114,131 patent/US4324530A/en not_active Expired - Lifetime
- 1980-11-21 CA CA000365237A patent/CA1143354A/en not_active Expired
-
1981
- 1981-01-07 IL IL61879A patent/IL61879A/xx unknown
- 1981-01-08 GB GB8100490A patent/GB2067493B/en not_active Expired
- 1981-01-12 AU AU66153/81A patent/AU536734B2/en not_active Ceased
- 1981-01-13 DE DE19813100800 patent/DE3100800A1/de not_active Withdrawn
- 1981-01-16 CH CH263/81A patent/CH652980A5/de not_active IP Right Cessation
- 1981-01-20 ES ES498662A patent/ES8203288A1/es not_active Expired
- 1981-01-21 FR FR8101410A patent/FR2473983A1/fr active Granted
- 1981-01-21 IT IT19222/81A patent/IT1135095B/it active
- 1981-01-21 JP JP857081A patent/JPS56167599A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| ES498662A0 (es) | 1982-04-01 |
| GB2067493A (en) | 1981-07-30 |
| IT1135095B (it) | 1986-08-20 |
| IT8119222A0 (it) | 1981-01-21 |
| GB2067493B (en) | 1983-07-06 |
| DE3100800A1 (de) | 1982-01-07 |
| FR2473983B1 (Direct) | 1984-04-20 |
| JPS56167599A (en) | 1981-12-23 |
| IL61879A (en) | 1985-07-31 |
| AU6615381A (en) | 1981-07-30 |
| CA1143354A (en) | 1983-03-22 |
| US4324530A (en) | 1982-04-13 |
| ES8203288A1 (es) | 1982-04-01 |
| AU536734B2 (en) | 1984-05-24 |
| FR2473983A1 (fr) | 1981-07-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased | ||
| PL | Patent ceased |