FR2408518A1 - Pale d'helicoptere perfectionnee - Google Patents
Pale d'helicoptere perfectionneeInfo
- Publication number
- FR2408518A1 FR2408518A1 FR7831779A FR7831779A FR2408518A1 FR 2408518 A1 FR2408518 A1 FR 2408518A1 FR 7831779 A FR7831779 A FR 7831779A FR 7831779 A FR7831779 A FR 7831779A FR 2408518 A1 FR2408518 A1 FR 2408518A1
- Authority
- FR
- France
- Prior art keywords
- blade
- rope
- helicopter blade
- dimension
- approximately
- 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.)
- Granted
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
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)
- Cosmetics (AREA)
Abstract
L'INVENTION CONCERNE UNE PALE D'HELICOPTERE PERFECTIONNEE. CETTE PALE 10 COMPORTE UN TALON 16 CONCU POUR ETRE ASSEMBLE AU MOYEU 12 D'UN ROTOR, UNE PARTIE CENTRALE 18 ET UNE POINTE 20 QUI, DE PREFERENCE, EST DEPORTEE VERS L'ARRIERE. CETTE PARTIE CENTRALE 18 A UNE EPAISSEUR EGALE A ENVIRON 9,4 DE LA DIMENSION DE LA CORDE 26 ET ELLE PRESENTE UNE COURBURE MAXIMUM D'ENVIRON 1 DE CETTE DIMENSION EN UN POINT SITUE A L'AVANT DES 30 DE CETTE DERNIERE. L'INVENTION EST UTILISEE POUR REDUIRE OU SUPPRIMER LE DECROCHAGE EN RETRAIT DES PALES EN REDUISANT LA PRESSION MAXIMUM EXERCEE SUR LA SURFACE SUPERIEURE DE LA VOILURE ET EN REPARTISSANT CETTE PRESSION SUR UNE PLUS GRANDE SECTION DE LA CORDE.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/850,765 US4142837A (en) | 1977-11-11 | 1977-11-11 | Helicopter blade |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2408518A1 true FR2408518A1 (fr) | 1979-06-08 |
FR2408518B1 FR2408518B1 (fr) | 1983-08-26 |
Family
ID=25309054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7831779A Granted FR2408518A1 (fr) | 1977-11-11 | 1978-11-10 | Pale d'helicoptere perfectionnee |
Country Status (12)
Country | Link |
---|---|
US (1) | US4142837A (fr) |
JP (1) | JPS5475796A (fr) |
AU (1) | AU524387B2 (fr) |
BE (1) | BE871886A (fr) |
BR (1) | BR7807428A (fr) |
CA (1) | CA1092581A (fr) |
DE (1) | DE2849067A1 (fr) |
FR (1) | FR2408518A1 (fr) |
GB (1) | GB2011333B (fr) |
IL (1) | IL55887A (fr) |
IT (1) | IT1101063B (fr) |
NO (1) | NO144953C (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2463054A1 (fr) * | 1979-08-10 | 1981-02-20 | Aerospatiale | Profil de pale pour voilure tournante d'aeronef |
EP0024229A2 (fr) * | 1979-08-10 | 1981-02-25 | AEROSPATIALE Société Nationale Industrielle | Profil de pale pour voilure tournante d'aéronef |
EP0067097A1 (fr) * | 1981-06-05 | 1982-12-15 | Office National d'Etudes et de Recherches Aérospatiales (O.N.E.R.A.) | Extrémité de pale pour voilure tournante d'aéronef |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4248572A (en) * | 1978-12-11 | 1981-02-03 | United Technologies Corporation | Helicopter blade |
US4314795A (en) * | 1979-09-28 | 1982-02-09 | The Boeing Company | Advanced airfoils for helicopter rotor application |
EP0037633B1 (fr) * | 1980-03-28 | 1986-07-30 | WESTLAND plc | Pale de rotor pour hélicoptère |
FR2490586A1 (fr) * | 1980-09-24 | 1982-03-26 | Aerospatiale | Profil de pale pour voilure tournante d'aeronef |
FR2536365A1 (fr) * | 1982-11-18 | 1984-05-25 | Onera (Off Nat Aerospatiale) | Pale pour propulseur d'aeronef |
US4569633A (en) * | 1983-04-18 | 1986-02-11 | United Technologies Corporation | Airfoil section for a rotor blade of a rotorcraft |
US4789305A (en) * | 1985-04-26 | 1988-12-06 | Vaughen Jack F | Self-feathering rotary wing |
US4744728A (en) * | 1986-09-03 | 1988-05-17 | United Technologies Corporation | Helicopter blade airfoil |
USRE33589E (en) * | 1986-09-03 | 1991-05-14 | United Technologies Corporation | Helicopter blade airfoil |
GB9022281D0 (en) * | 1990-10-13 | 1991-02-20 | Westland Helicopters | Helicopter rotor blades |
US5137427A (en) * | 1990-12-20 | 1992-08-11 | United Technologies Corporation | Quiet tail rotor |
DE4401596A1 (de) * | 1994-01-20 | 1995-07-27 | Ekato Ruehr Mischtechnik | Rührorgan |
DE4444256C2 (de) * | 1994-12-13 | 1999-03-04 | Gerhard Benker | Rotorblattaufbau für einen Hubschrauber |
DE19713591C2 (de) * | 1997-04-02 | 2001-01-04 | Karl Mayer | Rotor für ein Drehflügelflugzeug mit Schlagflügelantrieb |
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 |
FR2768121B1 (fr) * | 1997-09-10 | 1999-11-19 | Onera (Off Nat Aerospatiale) | Pale a signature sonore reduite, pour voilure tournante d'aeronef, et voilure tournante comportant une telle pale |
CN100486867C (zh) * | 2004-02-02 | 2009-05-13 | 章洪 | 一种直升旋翼机 |
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 |
KR101275846B1 (ko) * | 2010-11-30 | 2013-06-17 | 부산대학교 산학협력단 | 돌출된 뒷전을 구비한 회전익 |
US20170267338A1 (en) | 2014-10-01 | 2017-09-21 | Sikorsky Aircraft Corporation | Acoustic signature variation of aircraft utilizing a clutch |
US10822076B2 (en) | 2014-10-01 | 2020-11-03 | Sikorsky Aircraft Corporation | Dual rotor, rotary wing aircraft |
EP3112258B1 (fr) * | 2015-07-03 | 2017-09-13 | AIRBUS HELICOPTERS DEUTSCHLAND GmbH | Profils aérodynamiques pour pales de rotors pour des aéronefs à voilure tournante |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB615318A (en) * | 1944-06-07 | 1949-01-05 | Glenn L Martin Co | Improvements in or relating to low drag airfoils |
FR2153253A1 (fr) * | 1971-09-22 | 1973-05-04 | United Aircraft Corp | |
FR2153254A1 (fr) * | 1971-09-22 | 1973-05-04 | United Aircraft Corp | |
FR2159422A1 (fr) * | 1971-11-09 | 1973-06-22 | Nasa | |
FR2261177A1 (en) * | 1974-02-20 | 1975-09-12 | Boeing Co | Aerodynamic rotor blade for helicopter - has an airfoil profile with component which has thickness distribution based on NACA series |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3822105A (en) * | 1971-09-22 | 1974-07-02 | United Aircraft Corp | Helicopter blade |
US3999888A (en) * | 1975-06-25 | 1976-12-28 | United Technologies Corporation | Composite tip weight attachment |
-
1977
- 1977-11-11 US US05/850,765 patent/US4142837A/en not_active Expired - Lifetime
-
1978
- 1978-11-01 AU AU41239/78A patent/AU524387B2/en not_active Expired
- 1978-11-06 IL IL55887A patent/IL55887A/xx unknown
- 1978-11-07 NO NO783728A patent/NO144953C/no unknown
- 1978-11-09 BE BE191628A patent/BE871886A/fr not_active IP Right Cessation
- 1978-11-09 CA CA316,033A patent/CA1092581A/fr not_active Expired
- 1978-11-10 FR FR7831779A patent/FR2408518A1/fr active Granted
- 1978-11-10 JP JP13875878A patent/JPS5475796A/ja active Granted
- 1978-11-10 IT IT29666/78A patent/IT1101063B/it active
- 1978-11-10 BR BR7807428A patent/BR7807428A/pt unknown
- 1978-11-11 DE DE19782849067 patent/DE2849067A1/de active Granted
- 1978-11-13 GB GB7844216A patent/GB2011333B/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB615318A (en) * | 1944-06-07 | 1949-01-05 | Glenn L Martin Co | Improvements in or relating to low drag airfoils |
FR2153253A1 (fr) * | 1971-09-22 | 1973-05-04 | United Aircraft Corp | |
FR2153254A1 (fr) * | 1971-09-22 | 1973-05-04 | United Aircraft Corp | |
FR2159422A1 (fr) * | 1971-11-09 | 1973-06-22 | Nasa | |
FR2261177A1 (en) * | 1974-02-20 | 1975-09-12 | Boeing Co | Aerodynamic rotor blade for helicopter - has an airfoil profile with component which has thickness distribution based on NACA series |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2463054A1 (fr) * | 1979-08-10 | 1981-02-20 | Aerospatiale | Profil de pale pour voilure tournante d'aeronef |
EP0024229A2 (fr) * | 1979-08-10 | 1981-02-25 | AEROSPATIALE Société Nationale Industrielle | Profil de pale pour voilure tournante d'aéronef |
EP0024229A3 (en) * | 1979-08-10 | 1981-04-29 | Societe Nationale Industrielle Aerospatiale Societe Anonyme Dite: | Blade profile for rotary-wing aircraft |
EP0067097A1 (fr) * | 1981-06-05 | 1982-12-15 | Office National d'Etudes et de Recherches Aérospatiales (O.N.E.R.A.) | Extrémité de pale pour voilure tournante d'aéronef |
Also Published As
Publication number | Publication date |
---|---|
DE2849067C2 (fr) | 1987-07-30 |
GB2011333B (en) | 1982-02-24 |
FR2408518B1 (fr) | 1983-08-26 |
US4142837A (en) | 1979-03-06 |
NO144953C (no) | 1981-12-16 |
GB2011333A (en) | 1979-07-11 |
JPS6133760B2 (fr) | 1986-08-04 |
AU4123978A (en) | 1979-05-17 |
BE871886A (fr) | 1979-03-01 |
JPS5475796A (en) | 1979-06-16 |
BR7807428A (pt) | 1979-07-24 |
IT7829666A0 (it) | 1978-11-10 |
NO144953B (no) | 1981-09-07 |
IT1101063B (it) | 1985-09-28 |
NO783728L (no) | 1979-05-14 |
AU524387B2 (en) | 1982-09-16 |
DE2849067A1 (de) | 1979-05-17 |
IL55887A (en) | 1980-12-31 |
CA1092581A (fr) | 1980-12-30 |
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