GB1247966A - Rotatable airfoils - Google Patents

Rotatable airfoils

Info

Publication number
GB1247966A
GB1247966A GB21269/69A GB2126969A GB1247966A GB 1247966 A GB1247966 A GB 1247966A GB 21269/69 A GB21269/69 A GB 21269/69A GB 2126969 A GB2126969 A GB 2126969A GB 1247966 A GB1247966 A GB 1247966A
Authority
GB
United Kingdom
Prior art keywords
sweep
outboard
swept portion
aft
swept
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.)
Expired
Application number
GB21269/69A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bell Aerospace Corp
Original Assignee
Bell Aerospace 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 Bell Aerospace Corp filed Critical Bell Aerospace Corp
Publication of GB1247966A publication Critical patent/GB1247966A/en
Expired legal-status Critical Current

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
    • B64C27/463—Blade tips

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
GB21269/69A 1968-05-07 1969-04-25 Rotatable airfoils Expired GB1247966A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72727868A 1968-05-07 1968-05-07

Publications (1)

Publication Number Publication Date
GB1247966A true GB1247966A (en) 1971-09-29

Family

ID=24922028

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21269/69A Expired GB1247966A (en) 1968-05-07 1969-04-25 Rotatable airfoils

Country Status (4)

Country Link
US (1) US3467197A (enExample)
DE (1) DE1923215A1 (enExample)
FR (1) FR2007973A1 (enExample)
GB (1) GB1247966A (enExample)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2621982A1 (de) * 1975-05-19 1976-12-09 Westland Aircraft Ltd Hubschrauber-rotorblatt
GB2312712A (en) * 1996-04-30 1997-11-05 Gkn Westland Helicopters Ltd Propeller/rotor blade
EP2505500A1 (en) * 2011-03-31 2012-10-03 Eurocopter Deutschland GmbH Noise and performance improved rotor blade for a helicopter
US9102397B2 (en) 2011-12-20 2015-08-11 General Electric Company Airfoils including tip profile for noise reduction and method for fabricating same

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854845A (en) * 1971-07-02 1974-12-17 De Water F Van Propeller having angularly disposed tip
US3822105A (en) * 1971-09-22 1974-07-02 United Aircraft Corp Helicopter blade
US4012172A (en) * 1975-09-10 1977-03-15 Avco Corporation Low noise blades for axial flow compressors
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
GB9023141D0 (en) * 1990-10-24 1991-07-10 Westland Helicopters Helicopter rotor blades
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
DE19812624A1 (de) * 1998-03-23 1999-09-30 Bmw Rolls Royce Gmbh Rotor-Schaufelblatt einer Axialströmungsmaschine
BR0003706A (pt) * 2000-05-30 2002-02-13 Tecsis Tecnologia E Sist S Ava Pá para ventilador axial de baixo ruìdo e alta eficiência
US6986642B2 (en) * 2002-08-30 2006-01-17 Cartercopters, L.L.C. Extreme mu rotor
KR101016010B1 (ko) * 2009-04-08 2011-02-23 건국대학교 산학협력단 회전익-와류-상호작용 소음 저감을 위한 가변돌기를 가진 회전익항공기용 회전익
US8684698B2 (en) 2011-03-25 2014-04-01 General Electric Company Compressor airfoil with tip dihedral
US8702398B2 (en) 2011-03-25 2014-04-22 General Electric Company High camber compressor rotor blade
FR2999151B1 (fr) * 2012-12-07 2017-01-27 Snecma Pale d'helice pour turbomachine
WO2019241725A1 (en) * 2018-06-15 2019-12-19 The Texas A&M University System Hover-capable aircraft
US12448111B1 (en) * 2024-04-17 2025-10-21 Textron Innovations Inc. Method and system for inverse-tapered high-speed rotors

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1692081A (en) * 1925-11-24 1928-11-20 Cierva Juan De La Aircraft with rotative wings
US1888056A (en) * 1932-05-31 1932-11-15 Verzillo Jack Four blade propeller
US2070657A (en) * 1933-11-09 1937-02-16 Hafner Raoul Rotative wing aircraft
US2152861A (en) * 1934-05-16 1939-04-04 Autogiro Co Of America Blade construction for aircraft sustaining rotors
US2422388A (en) * 1943-04-05 1947-06-17 Arthur W Billings Airplane propeller
US3066742A (en) * 1957-01-11 1962-12-04 Georgia Tech Res Inst Rotor blade
US3053325A (en) * 1961-10-25 1962-09-11 Paul F Ferreira Aeronautical propeller

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2621982A1 (de) * 1975-05-19 1976-12-09 Westland Aircraft Ltd Hubschrauber-rotorblatt
GB2312712A (en) * 1996-04-30 1997-11-05 Gkn Westland Helicopters Ltd Propeller/rotor blade
EP2505500A1 (en) * 2011-03-31 2012-10-03 Eurocopter Deutschland GmbH Noise and performance improved rotor blade for a helicopter
US9061758B2 (en) 2011-03-31 2015-06-23 Airbus Helicopters Deutschland GmbH Noise and performance improved rotor blade for a helicopter
US9102397B2 (en) 2011-12-20 2015-08-11 General Electric Company Airfoils including tip profile for noise reduction and method for fabricating same

Also Published As

Publication number Publication date
US3467197A (en) 1969-09-16
DE1923215A1 (de) 1969-11-20
FR2007973A1 (enExample) 1970-01-16

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