FR998574A - Improvement in variable pitch coaxial propellers - Google Patents

Improvement in variable pitch coaxial propellers

Info

Publication number
FR998574A
FR998574A FR998574DA FR998574A FR 998574 A FR998574 A FR 998574A FR 998574D A FR998574D A FR 998574DA FR 998574 A FR998574 A FR 998574A
Authority
FR
France
Prior art keywords
improvement
variable pitch
coaxial propellers
pitch coaxial
propellers
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
Other languages
French (fr)
Inventor
Robert Doussain
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 filed Critical
Application granted granted Critical
Publication of FR998574A publication Critical patent/FR998574A/en
Expired legal-status Critical Current

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
    • B64C11/30—Blade pitch-changing mechanisms
    • B64C11/306—Blade pitch-changing mechanisms specially adapted for contrarotating propellers

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
FR998574D 1945-11-02 1945-11-02 Improvement in variable pitch coaxial propellers Expired FR998574A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR998574T 1945-11-02

Publications (1)

Publication Number Publication Date
FR998574A true FR998574A (en) 1952-01-21

Family

ID=9559450

Family Applications (1)

Application Number Title Priority Date Filing Date
FR998574D Expired FR998574A (en) 1945-11-02 1945-11-02 Improvement in variable pitch coaxial propellers

Country Status (1)

Country Link
FR (1) FR998574A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2948343A (en) * 1953-12-04 1960-08-09 Gen Motors Corp Propeller mechanism
US5137425A (en) * 1989-12-19 1992-08-11 Mtu Motoren- Und Turbinen-Union Muchen Gmbh Propfan engine having two oppositely rotating fan rotors
FR2911930A1 (en) * 2007-01-26 2008-08-01 Snecma Sa Turboprop for controlling pitch of blade, has groups of planet gearwheels, where one group is interposed between toothed rings of support and casing and other group is interposed between toothed rings of actuator annulus and control annulus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2948343A (en) * 1953-12-04 1960-08-09 Gen Motors Corp Propeller mechanism
US5137425A (en) * 1989-12-19 1992-08-11 Mtu Motoren- Und Turbinen-Union Muchen Gmbh Propfan engine having two oppositely rotating fan rotors
FR2911930A1 (en) * 2007-01-26 2008-08-01 Snecma Sa Turboprop for controlling pitch of blade, has groups of planet gearwheels, where one group is interposed between toothed rings of support and casing and other group is interposed between toothed rings of actuator annulus and control annulus
EP1953084A1 (en) 2007-01-26 2008-08-06 Snecma Turbo-propeller with adjustable pitch propeller
CN101234668B (en) * 2007-01-26 2012-03-28 斯奈克玛 Turboprop with a variable-pitch propeller
RU2453711C2 (en) * 2007-01-26 2012-06-20 Снекма Turboprop with variable-pitch propeller
US8272833B2 (en) 2007-01-26 2012-09-25 Snecma Turboprop with a variable-pitch propeller

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