IT7829666A0 - Pala di elicottero perfezionata. - Google Patents
Pala di elicottero perfezionata.Info
- Publication number
- IT7829666A0 IT7829666A0 IT7829666A IT2966678A IT7829666A0 IT 7829666 A0 IT7829666 A0 IT 7829666A0 IT 7829666 A IT7829666 A IT 7829666A IT 2966678 A IT2966678 A IT 2966678A IT 7829666 A0 IT7829666 A0 IT 7829666A0
- Authority
- IT
- Italy
- Prior art keywords
- helicopter blade
- improved helicopter
- improved
- blade
- helicopter
- 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
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)
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 |
---|---|
IT7829666A0 true IT7829666A0 (it) | 1978-11-10 |
IT1101063B IT1101063B (it) | 1985-09-28 |
Family
ID=25309054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT29666/78A IT1101063B (it) | 1977-11-11 | 1978-11-10 | Pala di elicottero perfezionata |
Country Status (12)
Country | Link |
---|---|
US (1) | US4142837A (it) |
JP (1) | JPS5475796A (it) |
AU (1) | AU524387B2 (it) |
BE (1) | BE871886A (it) |
BR (1) | BR7807428A (it) |
CA (1) | CA1092581A (it) |
DE (1) | DE2849067A1 (it) |
FR (1) | FR2408518A1 (it) |
GB (1) | GB2011333B (it) |
IL (1) | IL55887A (it) |
IT (1) | IT1101063B (it) |
NO (1) | NO144953C (it) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4248572A (en) * | 1978-12-11 | 1981-02-03 | United Technologies Corporation | Helicopter blade |
CA1141738A (fr) * | 1979-08-10 | 1983-02-22 | Jacques Gallot | Profil de pale voilure tournante d'aeronef |
FR2463054A1 (fr) * | 1979-08-10 | 1981-02-20 | Aerospatiale | Profil de pale pour voilure tournante d'aeronef |
US4314795A (en) * | 1979-09-28 | 1982-02-09 | The Boeing Company | Advanced airfoils for helicopter rotor application |
DE3175016D1 (en) * | 1980-03-28 | 1986-09-04 | Westland Plc | Helicopter rotor blade |
FR2490586A1 (fr) * | 1980-09-24 | 1982-03-26 | Aerospatiale | Profil de pale pour voilure tournante d'aeronef |
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 |
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 |
WO2016053408A1 (en) | 2014-10-01 | 2016-04-07 | Sikorsky Aircraft Corporation | Acoustic signature variation of aircraft utilizing a clutch |
WO2016054209A1 (en) | 2014-10-01 | 2016-04-07 | Sikorsky Aircraft Corporation | Dual rotor, rotary wing aircraft |
EP3112258B1 (en) * | 2015-07-03 | 2017-09-13 | AIRBUS HELICOPTERS DEUTSCHLAND GmbH | Airfoils for rotor blades of rotary wing aircrafts |
Family Cites Families (7)
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 |
US3822105A (en) * | 1971-09-22 | 1974-07-02 | United Aircraft Corp | Helicopter blade |
GB1391940A (en) * | 1971-09-22 | 1975-04-23 | United Aircraft Corp | Helicopter rotor blades |
US3728045A (en) * | 1971-09-22 | 1973-04-17 | United Aircraft Corp | Helicopter blade |
US3952971A (en) * | 1971-11-09 | 1976-04-27 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Airfoil shape for flight at subsonic speeds |
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 |
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/xx not_active IP Right Cessation
- 1978-11-09 CA CA316,033A patent/CA1092581A/en not_active Expired
- 1978-11-10 JP JP13875878A patent/JPS5475796A/ja active Granted
- 1978-11-10 BR BR7807428A patent/BR7807428A/pt unknown
- 1978-11-10 FR FR7831779A patent/FR2408518A1/fr active Granted
- 1978-11-10 IT IT29666/78A patent/IT1101063B/it active
- 1978-11-11 DE DE19782849067 patent/DE2849067A1/de active Granted
- 1978-11-13 GB GB7844216A patent/GB2011333B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IT1101063B (it) | 1985-09-28 |
AU524387B2 (en) | 1982-09-16 |
DE2849067C2 (it) | 1987-07-30 |
CA1092581A (en) | 1980-12-30 |
NO783728L (no) | 1979-05-14 |
US4142837A (en) | 1979-03-06 |
IL55887A (en) | 1980-12-31 |
GB2011333B (en) | 1982-02-24 |
FR2408518B1 (it) | 1983-08-26 |
NO144953B (no) | 1981-09-07 |
DE2849067A1 (de) | 1979-05-17 |
JPS5475796A (en) | 1979-06-16 |
JPS6133760B2 (it) | 1986-08-04 |
FR2408518A1 (fr) | 1979-06-08 |
BE871886A (fr) | 1979-03-01 |
NO144953C (no) | 1981-12-16 |
AU4123978A (en) | 1979-05-17 |
GB2011333A (en) | 1979-07-11 |
BR7807428A (pt) | 1979-07-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19971031 |