BR8101833A - Pa para rotor de helicoptero - Google Patents
Pa para rotor de helicopteroInfo
- Publication number
- BR8101833A BR8101833A BR8101833A BR8101833A BR8101833A BR 8101833 A BR8101833 A BR 8101833A BR 8101833 A BR8101833 A BR 8101833A BR 8101833 A BR8101833 A BR 8101833A BR 8101833 A BR8101833 A BR 8101833A
- Authority
- BR
- Brazil
- Prior art keywords
- helicopter rotor
- helicopter
- rotor
- 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
-
- 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
- Y10S416/02—Formulas of curves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8006577A FR2479132A1 (fr) | 1980-03-25 | 1980-03-25 | Pale a hautes performances pour rotor d'helicoptere |
Publications (1)
Publication Number | Publication Date |
---|---|
BR8101833A true BR8101833A (pt) | 1981-09-29 |
Family
ID=9240061
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR8101833A BR8101833A (pt) | 1980-03-25 | 1981-03-25 | Pa para rotor de helicoptero |
Country Status (7)
Country | Link |
---|---|
US (1) | US4392781A (pt) |
EP (1) | EP0036825B1 (pt) |
JP (1) | JPS56149296A (pt) |
BR (1) | BR8101833A (pt) |
DE (1) | DE3162082D1 (pt) |
FR (1) | FR2479132A1 (pt) |
IN (1) | IN153698B (pt) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2142597B (en) * | 1983-07-04 | 1986-10-29 | Westland Plc | Helicopter rotor blade |
CA1243993A (en) * | 1983-07-04 | 1988-11-01 | Westland Plc | Helicopter rotor blade |
DE3482317D1 (de) * | 1983-08-17 | 1990-06-28 | Oscar Asboth | Luftschraube. |
US4557666A (en) * | 1983-09-29 | 1985-12-10 | The Boeing Company | Wind turbine rotor |
US4565929A (en) * | 1983-09-29 | 1986-01-21 | The Boeing Company | Wind powered system for generating electricity |
US4655685A (en) * | 1985-12-16 | 1987-04-07 | United Technologies Corporation | Helicopter main rotor blade having a short span slot near the tip end |
FR2628062B1 (fr) * | 1988-03-07 | 1990-08-10 | Aerospatiale | Pale pour helice carenee a hautes performances, helice carenee multipale pourvue de telles pales et agencement de rotor de queue a helice carenee pour aeronef a voilure tournante |
US4976587A (en) * | 1988-07-20 | 1990-12-11 | Dwr Wind Technologies Inc. | Composite wind turbine rotor blade and method for making same |
GB8911360D0 (en) * | 1989-05-17 | 1989-07-05 | Sarnoff David Res Center | Electronic charge protection devices |
US5173023A (en) * | 1991-08-12 | 1992-12-22 | Cannon Energy Corporation | Wind turbine generator blade and retention system |
FR2689852B1 (fr) * | 1992-04-09 | 1994-06-17 | Eurocopter France | Pale pour voilure tournante d'aeronef, a extremite en fleche. |
US5879131A (en) * | 1994-04-25 | 1999-03-09 | Arlton; Paul E. | Main rotor system for model helicopters |
GB2312712A (en) * | 1996-04-30 | 1997-11-05 | Gkn Westland Helicopters Ltd | Propeller/rotor blade |
FR2765187B1 (fr) * | 1997-06-25 | 1999-08-27 | Onera (Off Nat Aerospatiale) | Profil de pale pour voilure tournante d'aeronef et pale pour voilure tournante presentant un tel profil |
US7854593B2 (en) * | 2006-02-16 | 2010-12-21 | Sikorsky Aircraft Corporation | Airfoil for a helicopter rotor blade |
US7857598B2 (en) * | 2006-06-26 | 2010-12-28 | Aerovel Corporation | Variable-twist rotor blade controlled by hub pitch angle and rotational speed |
GB2472451B (en) | 2009-08-07 | 2014-06-25 | Christopher Jarvis | Rotor assembly for a rotocraft |
US9199718B2 (en) * | 2011-02-12 | 2015-12-01 | Shaun P. Fogarty | Auto-rotating device |
WO2016054209A1 (en) | 2014-10-01 | 2016-04-07 | 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 |
CN206954494U (zh) * | 2017-06-30 | 2018-02-02 | 深圳市大疆创新科技有限公司 | 螺旋桨、动力组件及飞行器 |
FR3110893B1 (fr) | 2020-05-29 | 2022-07-01 | Airbus Helicopters | Méthode de construction d’une pale de rotor destinée à un giravion, pales et giravion |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1369600A (fr) * | 1963-07-23 | 1964-08-14 | Electric Auto Lite Co | Hélice, notamment pour avions à décollage et atterrissage verticaux |
GB1391940A (en) * | 1971-09-22 | 1975-04-23 | United Aircraft Corp | Helicopter rotor blades |
CA988906A (en) * | 1973-06-04 | 1976-05-11 | United Aircraft Corporation | Helicopter blade |
US3902821A (en) * | 1973-12-07 | 1975-09-02 | Summa Corp | Helicopter rotor |
US4248572A (en) * | 1978-12-11 | 1981-02-03 | United Technologies Corporation | Helicopter blade |
FR2463054A1 (fr) * | 1979-08-10 | 1981-02-20 | Aerospatiale | Profil de pale pour voilure tournante d'aeronef |
-
1980
- 1980-03-25 FR FR8006577A patent/FR2479132A1/fr active Granted
-
1981
- 1981-03-12 IN IN270/CAL/81A patent/IN153698B/en unknown
- 1981-03-13 US US06/243,348 patent/US4392781A/en not_active Expired - Lifetime
- 1981-03-24 DE DE8181400464T patent/DE3162082D1/de not_active Expired
- 1981-03-24 EP EP81400464A patent/EP0036825B1/fr not_active Expired
- 1981-03-25 JP JP4254281A patent/JPS56149296A/ja active Granted
- 1981-03-25 BR BR8101833A patent/BR8101833A/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JPS56149296A (en) | 1981-11-19 |
US4392781A (en) | 1983-07-12 |
EP0036825A1 (fr) | 1981-09-30 |
DE3162082D1 (en) | 1984-03-08 |
EP0036825B1 (fr) | 1984-02-01 |
FR2479132B1 (pt) | 1984-03-23 |
FR2479132A1 (fr) | 1981-10-02 |
IN153698B (pt) | 1984-08-11 |
JPH036039B2 (pt) | 1991-01-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK | Patent expired |
Effective date: 19960325 |