ZA979933B - Blade with swept-back tip for the rotary wings of an aircraft. - Google Patents
Blade with swept-back tip for the rotary wings of an aircraft.Info
- Publication number
- ZA979933B ZA979933B ZA9709933A ZA979933A ZA979933B ZA 979933 B ZA979933 B ZA 979933B ZA 9709933 A ZA9709933 A ZA 9709933A ZA 979933 A ZA979933 A ZA 979933A ZA 979933 B ZA979933 B ZA 979933B
- Authority
- ZA
- South Africa
- Prior art keywords
- swept
- aircraft
- blade
- rotary wings
- back tip
- Prior art date
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
- B64C27/467—Aerodynamic features
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S416/00—Fluid reaction surfaces, i.e. impellers
- Y10S416/05—Variable camber or chord length
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9614066A FR2755941B1 (fr) | 1996-11-19 | 1996-11-19 | Pale a extremite en fleche pour voilure tournante d'aeronef |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA979933B true ZA979933B (en) | 1998-05-25 |
Family
ID=9497748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA9709933A ZA979933B (en) | 1996-11-19 | 1997-11-05 | Blade with swept-back tip for the rotary wings of an aircraft. |
Country Status (8)
Country | Link |
---|---|
US (1) | US6000911A (ru) |
EP (1) | EP0842846B1 (ru) |
JP (1) | JP3802209B2 (ru) |
CN (1) | CN1077859C (ru) |
DE (1) | DE69714947T2 (ru) |
FR (1) | FR2755941B1 (ru) |
RU (1) | RU2139811C1 (ru) |
ZA (1) | ZA979933B (ru) |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
GB0420601D0 (en) * | 2004-09-16 | 2004-10-20 | Qinetiq Ltd | Wing tip devices |
US7344360B2 (en) * | 2004-09-29 | 2008-03-18 | General Electric Company | Wind turbine rotor blade with in-plane sweep and devices using same, and methods for making same |
US7946526B2 (en) * | 2004-11-05 | 2011-05-24 | Nachman Zimet | Rotary-wing vehicle system |
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 |
US7815482B2 (en) | 2006-01-19 | 2010-10-19 | Silverlit Toys Manufactory, Ltd. | Helicopter |
BE1016960A3 (nl) | 2006-01-19 | 2007-11-06 | Rostyne Alexander Jozef Magdal | Verbeterde helikopter. |
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 |
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 |
US7854593B2 (en) * | 2006-02-16 | 2010-12-21 | Sikorsky Aircraft Corporation | Airfoil for a helicopter rotor blade |
US8016566B2 (en) * | 2006-08-03 | 2011-09-13 | Bell Helicopter Textron Inc. | High performance low noise rotorcraft blade aerodynamic design |
US7762785B2 (en) * | 2007-12-10 | 2010-07-27 | Sikorsky Aircraft Corporation | Main rotor blade with integral tip section |
PT2123556E (pt) * | 2008-05-22 | 2011-02-04 | Agusta Spa | Pá do rotor da cauda anti-torque para helicóptero |
US7854595B2 (en) * | 2008-07-30 | 2010-12-21 | General Electric Company | Wind turbine blade tip shapes |
US8052500B2 (en) | 2008-11-25 | 2011-11-08 | Silverlit Limited | Helicopter with main and auxiliary rotors |
EP2505500B1 (en) | 2011-03-31 | 2016-09-14 | AIRBUS HELICOPTERS DEUTSCHLAND GmbH | Noise and performance improved rotor blade for a helicopter |
FR3005301B1 (fr) * | 2013-05-03 | 2015-05-29 | Eurocopter France | Rotor carene d'aeronef, et giravion |
FR3045564B1 (fr) | 2015-12-21 | 2018-08-17 | Airbus Helicopters | Pale de rotor d'aeronef a geometrie adaptee pour l'amelioration acoustique lors de vols d'approche et l'amelioration des performances en vols stationnaire et d'avancement |
FR3045565B1 (fr) * | 2015-12-21 | 2018-07-27 | Airbus Helicopters | Pale de rotor d'aeronef a geometrie adaptee pour l'ameloration acoustique lors d'un vol d'approche et l'amelioration des performances en vol d'avancement |
CN105947160B (zh) * | 2016-05-05 | 2018-07-24 | 哈尔滨工程大学 | 一种降低叶根处应力并减小梢涡的螺旋桨 |
US10858088B2 (en) * | 2016-08-31 | 2020-12-08 | David E. Shormann | Biomimetic airfoil bodies and methods of designing and making same |
EP3293113B1 (en) | 2016-09-07 | 2018-12-12 | LEONARDO S.p.A. | Rotor for a hover-capable aircraft and related method of control |
CN108688794A (zh) * | 2018-04-18 | 2018-10-23 | 中山市朗宇模型有限公司 | 螺旋桨 |
CN110337404A (zh) * | 2018-05-28 | 2019-10-15 | 深圳市大疆创新科技有限公司 | 螺旋桨组件、动力组件及飞行器 |
US20210253232A1 (en) * | 2018-06-15 | 2021-08-19 | The Texas A&M University System | Hover-capable aircraft |
US11999466B2 (en) | 2019-11-14 | 2024-06-04 | Skydio, Inc. | Ultra-wide-chord propeller |
CN112173075B (zh) * | 2020-09-25 | 2022-12-30 | 中国直升机设计研究所 | 一种直升机低噪声旋翼桨叶气动外形 |
CN112977816B (zh) * | 2021-05-17 | 2021-08-06 | 北京三快在线科技有限公司 | 旋翼飞行器的桨叶及旋翼飞行器 |
CN114560082B (zh) * | 2022-02-16 | 2023-07-04 | 西南科技大学 | 一种能有效控制桨尖涡的组合修形的桨尖结构及设计方法 |
US12116119B2 (en) * | 2022-03-28 | 2024-10-15 | Lockheed Martin Corporation | High speed rotor blade design |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3066742A (en) * | 1957-01-11 | 1962-12-04 | Georgia Tech Res Inst | Rotor blade |
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 |
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 |
FR2617118B1 (fr) * | 1987-06-29 | 1992-08-21 | Aerospatiale | Pale a extremite courbe pour voilure tournante d'aeronef |
FR2636593B1 (fr) * | 1988-09-19 | 1990-11-23 | Aerospatiale | Pale pour voilure tournante d'aeronef et voilure tournante comportant une telle pale |
FR2689852B1 (fr) * | 1992-04-09 | 1994-06-17 | Eurocopter France | Pale pour voilure tournante d'aeronef, a extremite en fleche. |
-
1996
- 1996-11-19 FR FR9614066A patent/FR2755941B1/fr not_active Expired - Lifetime
-
1997
- 1997-11-05 EP EP97402633A patent/EP0842846B1/fr not_active Expired - Lifetime
- 1997-11-05 ZA ZA9709933A patent/ZA979933B/xx unknown
- 1997-11-05 DE DE69714947T patent/DE69714947T2/de not_active Expired - Lifetime
- 1997-11-18 US US08/972,274 patent/US6000911A/en not_active Expired - Lifetime
- 1997-11-18 RU RU97120828A patent/RU2139811C1/ru active
- 1997-11-19 JP JP31851197A patent/JP3802209B2/ja not_active Expired - Lifetime
- 1997-11-19 CN CN97126455A patent/CN1077859C/zh not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
RU2139811C1 (ru) | 1999-10-20 |
US6000911A (en) | 1999-12-14 |
FR2755941A1 (fr) | 1998-05-22 |
DE69714947T2 (de) | 2003-04-24 |
CN1077859C (zh) | 2002-01-16 |
JPH1199994A (ja) | 1999-04-13 |
DE69714947D1 (de) | 2002-10-02 |
CN1185399A (zh) | 1998-06-24 |
JP3802209B2 (ja) | 2006-07-26 |
FR2755941B1 (fr) | 1999-01-15 |
EP0842846B1 (fr) | 2002-08-28 |
EP0842846A1 (fr) | 1998-05-20 |
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