FR2715909B1 - Twin girder helicopter using a differentiated coaxial birotor. - Google Patents

Twin girder helicopter using a differentiated coaxial birotor.

Info

Publication number
FR2715909B1
FR2715909B1 FR9401518A FR9401518A FR2715909B1 FR 2715909 B1 FR2715909 B1 FR 2715909B1 FR 9401518 A FR9401518 A FR 9401518A FR 9401518 A FR9401518 A FR 9401518A FR 2715909 B1 FR2715909 B1 FR 2715909B1
Authority
FR
France
Prior art keywords
helicopter
differentiated
girder
twin
coaxial birotor
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
FR9401518A
Other languages
French (fr)
Other versions
FR2715909A1 (en
Inventor
Olivier Jean Marcel Boute
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR9401518A priority Critical patent/FR2715909B1/en
Publication of FR2715909A1 publication Critical patent/FR2715909A1/en
Application granted granted Critical
Publication of FR2715909B1 publication Critical patent/FR2715909B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/04—Helicopters
    • B64C27/08—Helicopters with two or more rotors
    • B64C27/10—Helicopters with two or more rotors arranged coaxially
FR9401518A 1994-02-10 1994-02-10 Twin girder helicopter using a differentiated coaxial birotor. Expired - Fee Related FR2715909B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9401518A FR2715909B1 (en) 1994-02-10 1994-02-10 Twin girder helicopter using a differentiated coaxial birotor.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9401518A FR2715909B1 (en) 1994-02-10 1994-02-10 Twin girder helicopter using a differentiated coaxial birotor.

Publications (2)

Publication Number Publication Date
FR2715909A1 FR2715909A1 (en) 1995-08-11
FR2715909B1 true FR2715909B1 (en) 1996-04-05

Family

ID=9459965

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9401518A Expired - Fee Related FR2715909B1 (en) 1994-02-10 1994-02-10 Twin girder helicopter using a differentiated coaxial birotor.

Country Status (1)

Country Link
FR (1) FR2715909B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20060460A1 (en) * 2006-06-23 2007-12-24 Quercetti Alessandro & Co FLYING DEVICE REPLACED BY A BIROTOR WITH DIEDRO BLADES
RU2496681C1 (en) * 2012-04-04 2013-10-27 Иван Петрович Шевченко Coaxial rotors

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4589611A (en) * 1983-03-01 1986-05-20 Maurice Ramme Air jet reaction contrarotating rotor gyrodyne

Also Published As

Publication number Publication date
FR2715909A1 (en) 1995-08-11

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20091030