B - Operations – Transporting – 64 – C
Patent
B - Operations, Transporting
64
C
B64C 11/38 (2006.01)
Patent
CA 2742925
An arrangement for the hydraulic adjustment of the propeller blades of an aircraft propeller (1) with the help of a hydraulic pump (5) having a hydraulic cylinder (3) which is acted upon by compressed oil comprises a pressure control valve (11) arranged parallel to the hydraulic pump and connected directly to the pressure connection (4) and intake connection (8) thereof, preferably integrated into the pump housing (14) . The pump losses and heating of the oil are therefore reduced and hydraulic efficiency is improved.
L'invention concerne un dispositif de réglage hydraulique des pales d'une hélice d'avion (1) au moyen d'un cylindre hydraulique (3) alimenté en huile sous pression par une pompe hydraulique (5). Le dispositif selon l'invention comporte une soupape de limitation de pression (11) disposée parallèlement à la pompe hydraulique, connectée directement au raccord de pression (4) et au raccord d'aspiration (8) de la pompe hydraulique, de préférence intégrée au carter de pompe (14). Les pertes de pompe et le réchauffement de l'huile sont ainsi réduits et le rendement hydraulique est amélioré.
Cassan Maclean
Thielert Aircraft Engines Gmbh Represented By The Insolvency Adm
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