FR3085349B1 - MAIN TRANSMISSION BOX FOR CONTRAROTARY HELICOPTER - Google Patents

MAIN TRANSMISSION BOX FOR CONTRAROTARY HELICOPTER Download PDF

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Publication number
FR3085349B1
FR3085349B1 FR1857882A FR1857882A FR3085349B1 FR 3085349 B1 FR3085349 B1 FR 3085349B1 FR 1857882 A FR1857882 A FR 1857882A FR 1857882 A FR1857882 A FR 1857882A FR 3085349 B1 FR3085349 B1 FR 3085349B1
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FR
France
Prior art keywords
output shaft
helicopter
main transmission
transmission box
contrarotary
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.)
Active
Application number
FR1857882A
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French (fr)
Other versions
FR3085349A1 (en
Inventor
De Lizoreux Aldric Renaud Gabriel Marie Moreau
Dreuille De Longeville Thomas Marie Joseph De
Antoine Mathieu
Boris Pierre Marcel Morelli
Serge Dominique Pettinotti
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.)
Safran Transmission Systems SAS
Original Assignee
Safran Transmission Systems SAS
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.)
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Publication date
Application filed by Safran Transmission Systems SAS filed Critical Safran Transmission Systems SAS
Priority to FR1857882A priority Critical patent/FR3085349B1/en
Publication of FR3085349A1 publication Critical patent/FR3085349A1/en
Application granted granted Critical
Publication of FR3085349B1 publication Critical patent/FR3085349B1/en
Active legal-status Critical Current
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/04—Helicopters
    • B64C27/12—Rotor drives

Abstract

Une boite de transmission principale (1) pour un hélicoptère comportant deux rotors contrarotatifs entrainés par un même moteur, la boite de transmission principale (1) comprenant un arbre d'entrée (10) adapté pour être entrainé en rotation par le moteur d'hélicoptère selon un axe d'entrée E, un premier arbre de sortie (11) et un deuxième arbre de sortie (12) respectivement adaptés pour entrainer les rotors de l'hélicoptère selon un même axe de sortie S, l'arbre d'entrée (10) étant relié au premier arbre de sortie (11) par une première ligne d'engrenage (LE1) comprenant un pignon d'orientation (31), l'arbre d'entrée (10) est relié au deuxième arbre de sortie (12) par une deuxième ligne d'engrenage (LE2), la deuxième ligne d'engrenage (LE2) comprenant un pignon d'orientation (32), les pignons d'orientation (31, 32) des lignes d'engrenage (LE1, LE2) étant montés de manière opposée afin que le premier arbre de sortie (11) et le deuxième arbre de sortie (12) soient entrainés de manière contrarotative.A main transmission box (1) for a helicopter comprising two counter-rotating rotors driven by the same engine, the main transmission box (1) comprising an input shaft (10) adapted to be rotated by the helicopter engine along an input axis E, a first output shaft (11) and a second output shaft (12) respectively adapted to drive the helicopter rotors along a same output axis S, the input shaft ( 10) being connected to the first output shaft (11) by a first gear line (LE1) comprising an orientation pinion (31), the input shaft (10) is connected to the second output shaft (12) ) by a second gear line (LE2), the second gear line (LE2) comprising an orientation pinion (32), the orientation pinions (31, 32) of the gear lines (LE1, LE2) ) being mounted oppositely so that the first output shaft (11) and the second output shaft (12) are driven in the same manner trarotative.

FR1857882A 2018-09-03 2018-09-03 MAIN TRANSMISSION BOX FOR CONTRAROTARY HELICOPTER Active FR3085349B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1857882A FR3085349B1 (en) 2018-09-03 2018-09-03 MAIN TRANSMISSION BOX FOR CONTRAROTARY HELICOPTER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1857882A FR3085349B1 (en) 2018-09-03 2018-09-03 MAIN TRANSMISSION BOX FOR CONTRAROTARY HELICOPTER

Publications (2)

Publication Number Publication Date
FR3085349A1 FR3085349A1 (en) 2020-03-06
FR3085349B1 true FR3085349B1 (en) 2021-04-09

Family

ID=63963223

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1857882A Active FR3085349B1 (en) 2018-09-03 2018-09-03 MAIN TRANSMISSION BOX FOR CONTRAROTARY HELICOPTER

Country Status (1)

Country Link
FR (1) FR3085349B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112141326A (en) * 2020-08-21 2020-12-29 中电科芜湖钻石飞机制造有限公司 Coaxial double-oar flying device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB151181A (en) * 1919-11-19 1920-09-23 Raul Pateras Pescara Means for the transmission of power stress or torque to the propellers of flying machines of helicopteral type
US4531692A (en) * 1982-03-15 1985-07-30 Ernesto Mateus Helicopter flight control and transmission system
IT1261872B (en) * 1993-09-17 1996-06-03 Fiatavio Spa APPLICATION OF FACIAL GEARS FOR TRANSMISSIONS FOR HELICOPTERS.
US7413142B2 (en) * 2005-05-31 2008-08-19 Sikorsky Aircraft Corporation Split torque gearbox for rotary wing aircraft with translational thrust system
US9278760B2 (en) * 2013-09-04 2016-03-08 Sikorsky Aircraft Corporation Torque split gearbox for rotary wing aircraft

Also Published As

Publication number Publication date
FR3085349A1 (en) 2020-03-06

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