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1. EP3577333 - THRUST REVERSER ACTUATION WITH A LIMITED FLOW OF PRESSURISED FLUID

Office
European Patent Office
Application Number 18705263
Application Date 30.01.2018
Publication Number 3577333
Publication Date 11.12.2019
Publication Kind B1
IPC
F02K 1/76
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
KJET-PROPULSION PLANTS
1Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
54Nozzles having means for reversing jet thrust
76Control or regulation of thrust reversers
CPC
F02K 1/763
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
KJET-PROPULSION PLANTS
1Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
54Nozzles having means for reversing jet thrust
76Control or regulation of thrust reversers
763with actuating systems or actuating devices; Arrangement of actuators for thrust reversers
F02K 1/605
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
KJET-PROPULSION PLANTS
1Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
54Nozzles having means for reversing jet thrust
56Reversing jet main flow
60by blocking the rearward discharge by means of pivoted eyelids or clamshells, e.g. target-type reversers
605the aft end of the engine cowling being movable to uncover openings for the reversed flow
F05D 2270/64
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
2270Control
60Control system actuates means
64Hydraulic actuators
F05D 2270/051
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
2270Control
01Purpose of the control system
05to affect the output of the engine
051Thrust
F02K 1/60
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
KJET-PROPULSION PLANTS
1Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
54Nozzles having means for reversing jet thrust
56Reversing jet main flow
60by blocking the rearward discharge by means of pivoted eyelids or clamshells, e.g. target-type reversers
F05D 2270/18
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
2270Control
01Purpose of the control system
18using fluidic amplifiers or actuators
Applicants WOODWARD INC
Inventors KOPECEK JOSEPH THOMAS
Designated States
Priority Data 15422726 02.02.2017 US
Title
(DE) SCHUBUMKEHRBETÄTIGUNG MIT BEGRENZTEM DRUCKFLUIDSTROM
(EN) THRUST REVERSER ACTUATION WITH A LIMITED FLOW OF PRESSURISED FLUID
(FR) ACTIONNEMENT D'INVERSEUR DE POUSSÉE AVEC UN DÉBIT LIMITÉ DE FLUIDE SOUS PRESSION
Abstract
(EN) An engine assembly includes a nacelle configured to at least partially surround an engine and a thrust reverser coupled to the nacelle. The thrust reverser includes: a thrust-reversing element movable relative to the nacelle between a stowed position and a deployed position; a hydraulic actuator operably coupled to move the thrust-reversing element; and a fluid control system configured to operate the hydraulic actuator. The fluid control system includes: a directional control unit including a directional control valve operable to selectively route fluid between a pressurized fluid source, the actuator, and a fluid return reservoir; one or more bypass fluid lines providing fluid communication between the actuator and the fluid return reservoir independent of the directional control valve; and a flow limiter residing between the pressurized fluid source and the directional control valve, the flow limiter configured to inhibit a pressure draw by the actuator from surpassing a predetermined threshold.
(FR) Selon la présente invention, un ensemble de moteur comprend une nacelle configurée pour entourer au moins partiellement un moteur et un inverseur de poussée couplé à la nacelle. L’inverseur de poussée comprend : un élément d’inversion de poussée mobile par rapport à la nacelle entre une position de rangement et une position déployée ; un actionneur hydraulique fonctionnellement raccordé pour déplacer l’élément d’inversion de poussée ; et un système de commande de fluide configuré pour actionner l’actionneur hydraulique. Le système de commande de fluide comprend : une unité de commande directionnelle comprenant une vanne de commande de direction opérationnelle pour acheminer sélectivement un fluide entre une source de fluide sous pression, l’actionneur et un réservoir de retour de fluide ; une ou plusieurs conduites de fluide de dérivation assurant une communication fluidique entre l’actionneur et le réservoir de retour de fluide indépendamment de la vanne de commande de direction ; et un limiteur de débit situé entre la source de fluide sous pression et la vanne de commande de direction, le limiteur de débit étant configuré pour éviter qu’une aspiration sous pression par l’actionneur dépasse un seuil prédéterminé.