FR2967135B1 - Ameliorations aux propulseurs a rotors contrarotatifs silencieux au decollage - Google Patents

Ameliorations aux propulseurs a rotors contrarotatifs silencieux au decollage

Info

Publication number
FR2967135B1
FR2967135B1 FR1100481A FR1100481A FR2967135B1 FR 2967135 B1 FR2967135 B1 FR 2967135B1 FR 1100481 A FR1100481 A FR 1100481A FR 1100481 A FR1100481 A FR 1100481A FR 2967135 B1 FR2967135 B1 FR 2967135B1
Authority
FR
France
Prior art keywords
contrarotable
takeoffs
rotors
thermally
thermally contrarotable
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 - Fee Related
Application number
FR1100481A
Other languages
English (en)
Other versions
FR2967135A1 (fr
Inventor
Gerard Fernand Fournier
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.)
GFIC
Original Assignee
GFIC
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 GFIC filed Critical GFIC
Priority to FR1100481A priority Critical patent/FR2967135B1/fr
Priority to PCT/FR2011/000590 priority patent/WO2012062976A1/fr
Publication of FR2967135A1 publication Critical patent/FR2967135A1/fr
Application granted granted Critical
Publication of FR2967135B1 publication Critical patent/FR2967135B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B64C11/46—Arrangements of, or constructional features peculiar to, multiple propellers
    • B64C11/48—Units of two or more coaxial propellers
    • 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
    • B64C11/30—Blade pitch-changing mechanisms
    • B64C11/306—Blade pitch-changing mechanisms specially adapted for contrarotating propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D31/00—Power plant control systems; Arrangement of power plant control systems in aircraft
    • B64D31/02—Initiating means
    • B64D31/06—Initiating means actuated automatically
    • B64D31/12—Initiating means actuated automatically for equalising or synchronising power plants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D35/00—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions
    • B64D35/04—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions characterised by the transmission driving a plurality of propellers or rotors
    • B64D35/06—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions characterised by the transmission driving a plurality of propellers or rotors the propellers or rotors being counter-rotating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D27/00—Arrangement or mounting of power plants in aircraft; Aircraft characterised by the type or position of power plants
    • B64D2027/005—Aircraft with an unducted turbofan comprising contra-rotating rotors, e.g. contra-rotating open rotors [CROR]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
FR1100481A 2010-11-10 2011-02-17 Ameliorations aux propulseurs a rotors contrarotatifs silencieux au decollage Expired - Fee Related FR2967135B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR1100481A FR2967135B1 (fr) 2010-11-10 2011-02-17 Ameliorations aux propulseurs a rotors contrarotatifs silencieux au decollage
PCT/FR2011/000590 WO2012062976A1 (fr) 2010-11-10 2011-11-04 Améliorations aux propulseurs à rotors contrarotatifs silencieux au décollage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1004400A FR2967131A1 (fr) 2010-11-10 2010-11-10 Propulseur a rotors contrarotatif silencieux au decollage
FR1100481A FR2967135B1 (fr) 2010-11-10 2011-02-17 Ameliorations aux propulseurs a rotors contrarotatifs silencieux au decollage

Publications (2)

Publication Number Publication Date
FR2967135A1 FR2967135A1 (fr) 2012-05-11
FR2967135B1 true FR2967135B1 (fr) 2015-01-02

Family

ID=44022005

Family Applications (2)

Application Number Title Priority Date Filing Date
FR1004400A Withdrawn FR2967131A1 (fr) 2010-11-10 2010-11-10 Propulseur a rotors contrarotatif silencieux au decollage
FR1100481A Expired - Fee Related FR2967135B1 (fr) 2010-11-10 2011-02-17 Ameliorations aux propulseurs a rotors contrarotatifs silencieux au decollage

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR1004400A Withdrawn FR2967131A1 (fr) 2010-11-10 2010-11-10 Propulseur a rotors contrarotatif silencieux au decollage

Country Status (2)

Country Link
FR (2) FR2967131A1 (fr)
WO (1) WO2012062976A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9835093B2 (en) * 2013-09-19 2017-12-05 The Boeing Company Contra-rotating open fan propulsion system
US11873767B2 (en) 2021-10-22 2024-01-16 Ge Avio S.R.L. Gearbox configurations for clockwise and counterclockwise propeller rotation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR706552A (fr) 1929-12-18 1931-06-25 Georg Mann & Co Ltd Dispositif pour enlever d'un tas ou pile les plaques, planches, feuilles ou tablettes composant la pile
FR1004400A (fr) 1947-04-16 1952-03-28 Cie Ind Des Telephones Perfectionnement aux amplificateurs à très large bande
DE3347679C2 (de) * 1983-12-31 1985-11-14 Sita Bauelemente Gmbh, 2080 Pinneberg Doppelpropeller
US5054998A (en) * 1988-09-30 1991-10-08 The Boeing Company, Inc. Thrust reversing system for counter rotating propellers
DE102009007013A1 (de) * 2009-01-31 2010-08-12 Deutsches Zentrum für Luft- und Raumfahrt e.V. Triebwerk, insbesondere CROR-Antrieb, für ein Flugzeug
US8661781B2 (en) * 2009-02-13 2014-03-04 The Boeing Company Counter rotating fan design and variable blade row spacing optimization for low environmental impact

Also Published As

Publication number Publication date
FR2967131A1 (fr) 2012-05-11
WO2012062976A1 (fr) 2012-05-18
FR2967135A1 (fr) 2012-05-11

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Legal Events

Date Code Title Description
PLFP Fee payment

Year of fee payment: 5

ST Notification of lapse

Effective date: 20161028