The invention relates to an auxiliary system for mechanically driving a relay shaft (8) of a helicopter propulsion system, comprising: a hydraulic motor (7), mechanically connected to said relay shaft (8); a hydraulic circuit (10) for supplying a pressurised liquid to said hydraulic motor(7) a controlled, fast-opening hydraulic valve (11) arranged on the hydraulic circuit (10); a pyro-hydraulic storage unit (9) driven by a control unit (12) and connected to said hydraulic valve (11), said pyro-hydraulic storage unit (9)comprising: an enclosure (20) including a piston (16) that defines a main compartment (17) having at least one solid propellant cartridge (19) and a compartment (18) for a liquid supply; an ignition charge (25) connected to said main compartment (17) and suitable for initiating the combustion of at least one solid propellant cartridge (19) upon receiving a command from said control unit (12).
SYSTEME AUXILIAIRE D'ENTRAINEMENT D'UN ARBRE D'UN SYSTEME PROPULSIF D'UN HELICOPTERE
AUXILIARY SYSTEM FOR DRIVING A SHAFT OF A HELICOPTER PROPULSION SYSTEM
HILFSSYSTEM ZUM ANTRIEB EINER WELLE EINES HUBSCHRAUBERANTRIEBSSYSTEMS
2020-10-14
Patent
Electronic Resource
French
SYSTEME AUXILIAIRE D'ENTRAINEMENT D'UN ARBRE D'UN SYSTEME PROPULSIF D'UN HELICOPTERE
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