FR2405870A1 - Ensemble de deux voilures tournantes de diametres differents pour giravions - Google Patents

Ensemble de deux voilures tournantes de diametres differents pour giravions

Info

Publication number
FR2405870A1
FR2405870A1 FR7730642A FR7730642A FR2405870A1 FR 2405870 A1 FR2405870 A1 FR 2405870A1 FR 7730642 A FR7730642 A FR 7730642A FR 7730642 A FR7730642 A FR 7730642A FR 2405870 A1 FR2405870 A1 FR 2405870A1
Authority
FR
France
Prior art keywords
blades
helicopter
rotor head
rotor
different lengths
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.)
Withdrawn
Application number
FR7730642A
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.)
LECOMTE RAOUL
Original Assignee
LECOMTE RAOUL
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 LECOMTE RAOUL filed Critical LECOMTE RAOUL
Priority to FR7730642A priority Critical patent/FR2405870A1/fr
Publication of FR2405870A1 publication Critical patent/FR2405870A1/fr
Withdrawn legal-status Critical Current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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Ensemble de voilures tournantes pour giravions. L'ensemble est composé de deux rotors de diamètres nettement différents, co-axiaux, contrarotatifs qui tournent à des vitesses différentes sous un rapport qui peut être constant ou variable. Cette conception équilibre les couples de renversement, les couples et moments gyroscopiques ainsi que les dissymétries aérodynamiques, ce qui permet de supprimer le rotor vertical anti-couple de queue apportant un gain de puissance appréciable (10 à 30 %) avantageusement reporté sur les deux rotors. La différence de diamètres des deux rotors permet de réduire ou supprimer l'interaction aérodynamique du rotor supérieur sur le rotor inférieur, selon la constitution du rotor grand diamètre. L'amplitude du battement vertical des pales de chacun des rotors étant réduit à leur point de croisement, la distance de garde entre les rotors est considérablement diminuée. Le rendement de l'ensemble est amélioré et le pilotage de l'appareil en est facilité.
FR7730642A 1977-10-12 1977-10-12 Ensemble de deux voilures tournantes de diametres differents pour giravions Withdrawn FR2405870A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7730642A FR2405870A1 (fr) 1977-10-12 1977-10-12 Ensemble de deux voilures tournantes de diametres differents pour giravions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7730642A FR2405870A1 (fr) 1977-10-12 1977-10-12 Ensemble de deux voilures tournantes de diametres differents pour giravions

Publications (1)

Publication Number Publication Date
FR2405870A1 true FR2405870A1 (fr) 1979-05-11

Family

ID=9196393

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7730642A Withdrawn FR2405870A1 (fr) 1977-10-12 1977-10-12 Ensemble de deux voilures tournantes de diametres differents pour giravions

Country Status (1)

Country Link
FR (1) FR2405870A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT396453B (de) * 1984-06-04 1993-09-27 Pichler Hubert Drehflügelfluggerät
DE10256916B4 (de) * 2002-11-28 2006-12-28 Siegfried Pauli Hubschrauber
DE10125077B4 (de) * 2001-05-14 2014-02-06 Siegfried Pauli Der Hubschrauber
CN104494822A (zh) * 2014-12-19 2015-04-08 四川精石航空科技开发有限公司 一种封闭式超轻型双座直升机的板式旋翼头
DE10203504B4 (de) * 2002-01-23 2016-06-09 Siegfried Pauli Hubschrauber
CN110963028A (zh) * 2019-11-11 2020-04-07 彩虹无人机科技有限公司 一种适用于倾转旋翼飞行器的共轴双旋翼
CN113741492A (zh) * 2021-08-06 2021-12-03 航天时代飞鹏有限公司 六旋翼无人机悬停抗风控制方法及装置

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT396453B (de) * 1984-06-04 1993-09-27 Pichler Hubert Drehflügelfluggerät
DE10125077B4 (de) * 2001-05-14 2014-02-06 Siegfried Pauli Der Hubschrauber
DE10203504B4 (de) * 2002-01-23 2016-06-09 Siegfried Pauli Hubschrauber
DE10256916B4 (de) * 2002-11-28 2006-12-28 Siegfried Pauli Hubschrauber
CN104494822A (zh) * 2014-12-19 2015-04-08 四川精石航空科技开发有限公司 一种封闭式超轻型双座直升机的板式旋翼头
CN110963028A (zh) * 2019-11-11 2020-04-07 彩虹无人机科技有限公司 一种适用于倾转旋翼飞行器的共轴双旋翼
CN113741492A (zh) * 2021-08-06 2021-12-03 航天时代飞鹏有限公司 六旋翼无人机悬停抗风控制方法及装置
CN113741492B (zh) * 2021-08-06 2023-10-17 航天时代飞鹏有限公司 六旋翼无人机悬停抗风控制方法及装置

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Legal Events

Date Code Title Description
ST Notification of lapse