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
Application number
IT7829666A
Other languages
English (en)
Other versions
IT1101063B (it
Original Assignee
United Technologies Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by United Technologies Corp filed Critical United Technologies Corp
Publication of IT7829666A0 publication Critical patent/IT7829666A0/it
Application granted granted Critical
Publication of IT1101063B publication Critical patent/IT1101063B/it

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)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Cosmetics (AREA)
IT29666/78A 1977-11-11 1978-11-10 Pala di elicottero perfezionata IT1101063B (it)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CA1141738A (fr) * 1979-08-10 1983-02-22 Jacques Gallot Profil de pale 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
USRE33589E (en) * 1986-09-03 1991-05-14 United Technologies Corporation Helicopter blade airfoil
US4744728A (en) * 1986-09-03 1988-05-17 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
US10822076B2 (en) 2014-10-01 2020-11-03 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
EP3112258B1 (en) * 2015-07-03 2017-09-13 AIRBUS HELICOPTERS DEUTSCHLAND GmbH Airfoils for rotor blades of rotary wing aircrafts

Family Cites Families (7)

* Cited by examiner, † Cited by third party
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
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
US3822105A (en) * 1971-09-22 1974-07-02 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

Also Published As

Publication number Publication date
JPS5475796A (en) 1979-06-16
BR7807428A (pt) 1979-07-24
NO783728L (no) 1979-05-14
IL55887A (en) 1980-12-31
FR2408518A1 (fr) 1979-06-08
GB2011333B (en) 1982-02-24
CA1092581A (en) 1980-12-30
FR2408518B1 (it) 1983-08-26
DE2849067A1 (de) 1979-05-17
AU4123978A (en) 1979-05-17
GB2011333A (en) 1979-07-11
AU524387B2 (en) 1982-09-16
NO144953C (no) 1981-12-16
BE871886A (fr) 1979-03-01
US4142837A (en) 1979-03-06
DE2849067C2 (it) 1987-07-30
JPS6133760B2 (it) 1986-08-04
IT1101063B (it) 1985-09-28
NO144953B (no) 1981-09-07

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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