IT1028036B - Pala a lunghezza variabile per rotori di aeromobili - Google Patents

Pala a lunghezza variabile per rotori di aeromobili

Info

Publication number
IT1028036B
IT1028036B IT31003/74A IT3100374A IT1028036B IT 1028036 B IT1028036 B IT 1028036B IT 31003/74 A IT31003/74 A IT 31003/74A IT 3100374 A IT3100374 A IT 3100374A IT 1028036 B IT1028036 B IT 1028036B
Authority
IT
Italy
Prior art keywords
variable length
length blade
aircraft rotors
rotors
aircraft
Prior art date
Application number
IT31003/74A
Other languages
English (en)
Original Assignee
United Aircraft 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 Aircraft Corp filed Critical United Aircraft Corp
Application granted granted Critical
Publication of IT1028036B publication Critical patent/IT1028036B/it

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/003—Variable-diameter propellers; Mechanisms therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Braking Arrangements (AREA)
  • Catching Or Destruction (AREA)
IT31003/74A 1973-12-26 1974-12-24 Pala a lunghezza variabile per rotori di aeromobili IT1028036B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US428480A US3884594A (en) 1973-12-26 1973-12-26 Variable length blade

Publications (1)

Publication Number Publication Date
IT1028036B true IT1028036B (it) 1979-01-30

Family

ID=23699077

Family Applications (1)

Application Number Title Priority Date Filing Date
IT31003/74A IT1028036B (it) 1973-12-26 1974-12-24 Pala a lunghezza variabile per rotori di aeromobili

Country Status (7)

Country Link
US (1) US3884594A (it)
JP (1) JPS5097100A (it)
CA (1) CA1001144A (it)
DE (1) DE2453039A1 (it)
FR (1) FR2256332A1 (it)
GB (1) GB1491253A (it)
IT (1) IT1028036B (it)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5253979A (en) * 1992-06-01 1993-10-19 United Technologies Corporation Variable diameter rotor having an offset twist
US5299912A (en) * 1992-07-28 1994-04-05 United Technologies Corporation Drive system for changing the diameter of a variable diameter rotor
US5636969A (en) * 1995-03-28 1997-06-10 Sikorsky Aircraft Corporation Torque tube/spar assembly for variable diameter helicopter rotors
US5655879A (en) * 1995-03-28 1997-08-12 Sikorsky Aircraft Corporation Mounting arrangement for variable diameter rotor blade assemblies
US5735670A (en) * 1995-12-11 1998-04-07 Sikorsky Aircraft Corporation Rotor system having alternating length rotor blades and positioning means therefor for reducing blade-vortex interaction (BVI) noise
US5620303A (en) * 1995-12-11 1997-04-15 Sikorsky Aircraft Corporation Rotor system having alternating length rotor blades for reducing blade-vortex interaction (BVI) noise
US5642982A (en) * 1995-12-11 1997-07-01 Sikorsky Aircraft Corporation Retraction/extension mechanism for variable diameter rotors
US5620304A (en) * 1995-12-11 1997-04-15 Sikorsky Aircraft Corporation Rotor system having alternating length rotor blades and positioning means therefor for reducing blade-vortex interaction (BVI) noise
US6030177A (en) 1998-12-18 2000-02-29 Sikorsky Aircraft Corporation Drive system for a variable diameter tilt rotor
US6019578A (en) 1998-12-18 2000-02-01 Sikorsky Aircraft Corporation Variable diameter rotor blade actuation system
US6132329A (en) * 1999-07-07 2000-10-17 Meritor Heavy Vehicle Systems, Llc Axle assembly lubricant temperature reduction apparatus
US8152466B2 (en) * 2008-04-30 2012-04-10 Agustawestland North America, Inc. Centrifugal force actuated variable span helicopter rotor
RU2569165C1 (ru) * 2014-09-09 2015-11-20 Акционерное общество "Военно-промышленная корпорация "Научно-производственное объединение машиностроения" (АО "ВПК "НПО машиностроения") Самолет
WO2016201079A1 (en) 2015-06-11 2016-12-15 Sikorsky Aircraft Corporation Tension torsion strap
CN112607003B (zh) * 2020-11-25 2023-06-20 常州市长昊机械有限公司 一种易收纳式航空叶片

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2163482A (en) * 1936-01-01 1939-06-20 Cameron Peter Aircraft having rotative sustaining means
US2145413A (en) * 1936-12-16 1939-01-31 William A Belfield Propeller
US3297094A (en) * 1965-10-20 1967-01-10 Boeing Co Aircraft propelling assembly
US3768923A (en) * 1969-09-18 1973-10-30 United Aircraft Corp Variable length blade
US3713751A (en) * 1970-10-29 1973-01-30 United Aircraft Corp Aerodynamic blade with high stiffness-to-weight ratio

Also Published As

Publication number Publication date
JPS5097100A (it) 1975-08-01
US3884594A (en) 1975-05-20
FR2256332A1 (it) 1975-07-25
DE2453039A1 (de) 1975-07-10
CA1001144A (en) 1976-12-07
GB1491253A (en) 1977-11-09

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