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beta rod springs

French translation: ressorts de biellette de calage

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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)

English term or phrase:	beta rod springs
French translation:	ressorts de biellette de calage
Entered by:	Daniel Bouchard

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12:14 May 27, 2011

English to French translations [PRO]
Tech/Engineering - Aerospace / Aviation / Space

English term or phrase: beta rod springs

"Examination of the pitch change mechanism within the hub and the location of the marks on the propeller blade butts from striking the beta rod springs confirmed that the propeller was operating at a positive blade angle when the marks were made during the impact sequence"

Description of an aircraft occurrence.

Thanks for the help!

Daniel Bouchard KudoZ activity Questions: 704 (7 open) (1 without valid answers) (14 closed without grading) Answers: 2
Local time: 05:37

ressorts de biellette de calage

Explanation:
Le rod suggère une héilce à calage variable du type CSP (Constant Speed Propeller) avec un régulateur centrifuge commandant un piston qui lui-même agit sur des biellettes pour modifier le calage du pied de pale d'héilce (les autres systèmes utilisent des couronnes, des pignons ou un moteur électrique).

Pour le bêta j'ai un doute, la seule occurrence que j'ai trouvée concerne une position Beta du régulateur sur un Beech 200:
http://www.simucockpit.fr/B200-5-gaz-volets-trims.htm
"En position Beta, le "Prop Governor" est inactif, c'est la manette des gaz qui règle le pas d'hélice"

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Note added at 1 heure (2011-05-27 13:38:26 GMT)
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Un brevet mentionne des "beta feedback rods" qui transmettraient l'angle du pied de pale au régulateur, ça date de 1987 donc il n'est pas impossible que les réalisations volent mais ça demande une vérification:
http://www.freepatentsonline.com/4648798.html
dans ce cas la biellette deviendrait une "biellette bêta"

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Note added at 2 heures (2011-05-27 14:57:00 GMT)
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Cela ne change rien à la traduction "biellettes bêta" mais un tiroir hydraulique spécifique Beta serait chargé de la commande de pas entre le pas minimal en avant et l'inversion:
http://www.placo.co.za/propellers11.html
On peut commander des Beta rods (mais pas trouvé de schéma):
https://myduncan.aero/online/components/CapabilitiesCatalogS...

Donc la traduction "ressort de biellette bêta" semble logique; en cas de doute dans la phrase sur le rôle on peut préciser "de calage"

Selected response from:

Didier Fourcot
Local time: 11:37

Grading comment

Merci!
4 KudoZ points were awarded for this answer

Summary of answers provided

ressorts de biellette de plage Beta

Bernard LOMBARD

3 +1

ressorts de biellette de calage

Didier Fourcot

Discussion entries: 2

Answers

1 hr confidence:

peer agreement (net): +1

ressorts de biellette de calage

Didier Fourcot
Local time: 11:37
Works in field
Native speaker of:

French
PRO pts in category: 16

Grading comment

Merci!

9 hrs confidence:

ressorts de biellette de plage Beta

Explanation:
ref:
11 août 2010 ... toutes les hélices possèdent la plage beta, qui consiste en un calage nul ou négatif du pas de l'hélice, dans le but de freiner l'aéronef ...
wiki.x-plane.fr/index.php?title=Plane...V8... - En cache - Pages similaires

Bernard LOMBARD
Local time: 11:37
Specializes in field
Native speaker of:

French
PRO pts in category: 55

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French translation: ressorts de biellette de calage

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French translation: ressorts de biellette de calage

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