Hydraulic control system for controlling the orientation of fan blades
Hydraulic control system for controlling the orientation of fan blades of a turbomachine comprising at least one set of variable-pitch fan blades operated by actuators (10, 12) connected to a hydraulic pump (18), a small pitches protection valve (24, 26) controlled by an associated electrovalve (22)...
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| creator | REGIS MICHEL PAUL DELDALLE CAROLINE FRANTZ |
| description | Hydraulic control system for controlling the orientation of fan blades of a turbomachine comprising at least one set of variable-pitch fan blades operated by actuators (10, 12) connected to a hydraulic pump (18), a small pitches protection valve (24, 26) controlled by an associated electrovalve (22) making it possible, on the ground, when the blades are oriented almost perpendicular to the axis of the turbomachine, to switch from a first operating zone (A) in which the rate at which the blades are oriented is slow to a second operating zone (B) in which the rate of orientation is appreciably higher, in which system the operating pressure of the hydraulic pump is controlled by the electrovalve that controls the small pitches protection valve so as to define two levels of output corresponding to the two operating zones. |
| format | Patent |
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AIRCRAFT ; AVIATION ; BLASTING ; COMBUSTION ENGINES ; COSMONAUTICS ; HEATING ; HELICOPTERS ; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS ; JET-PROPULSION PLANTS ; LIGHTING ; MECHANICAL ENGINEERING ; NON-POSITIVE DISPLACEMENT PUMPS ; PERFORMING OPERATIONS ; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS ; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ; TRANSPORTING ; WEAPONS</subject><creationdate>2014</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20140416&DB=EPODOC&CC=GB&NR=2507017A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20140416&DB=EPODOC&CC=GB&NR=2507017A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>REGIS MICHEL PAUL DELDALLE</creatorcontrib><creatorcontrib>CAROLINE FRANTZ</creatorcontrib><title>Hydraulic control system for controlling the orientation of fan blades</title><description>Hydraulic control system for controlling the orientation of fan blades of a turbomachine comprising at least one set of variable-pitch fan blades operated by actuators (10, 12) connected to a hydraulic pump (18), a small pitches protection valve (24, 26) controlled by an associated electrovalve (22) making it possible, on the ground, when the blades are oriented almost perpendicular to the axis of the turbomachine, to switch from a first operating zone (A) in which the rate at which the blades are oriented is slow to a second operating zone (B) in which the rate of orientation is appreciably higher, in which system the operating pressure of the hydraulic pump is controlled by the electrovalve that controls the small pitches protection valve so as to define two levels of output corresponding to the two operating zones.</description><subject>AEROPLANES</subject><subject>AIRCRAFT</subject><subject>AVIATION</subject><subject>BLASTING</subject><subject>COMBUSTION ENGINES</subject><subject>COSMONAUTICS</subject><subject>HEATING</subject><subject>HELICOPTERS</subject><subject>HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS</subject><subject>JET-PROPULSION PLANTS</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>NON-POSITIVE DISPLACEMENT PUMPS</subject><subject>PERFORMING OPERATIONS</subject><subject>POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS</subject><subject>PUMPS FOR LIQUIDS OR ELASTIC FLUIDS</subject><subject>TRANSPORTING</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2014</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZHDzqEwpSizNyUxWSM7PKynKz1EoriwuSc1VSMsvggnlZOalK5RkpCrkF2Wm5pUklmTm5ynkpymkJeYpJOUkpqQW8zCwpiXmFKfyQmluBnk31xBnD93Ugvz41OKCxOTUvNSSeHcnI1MDcwNDc0djwioAnVIzBA</recordid><startdate>20140416</startdate><enddate>20140416</enddate><creator>REGIS MICHEL PAUL DELDALLE</creator><creator>CAROLINE FRANTZ</creator><scope>EVB</scope></search><sort><creationdate>20140416</creationdate><title>Hydraulic control system for controlling the orientation of fan blades</title><author>REGIS MICHEL PAUL DELDALLE ; CAROLINE FRANTZ</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_GB2507017A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2014</creationdate><topic>AEROPLANES</topic><topic>AIRCRAFT</topic><topic>AVIATION</topic><topic>BLASTING</topic><topic>COMBUSTION ENGINES</topic><topic>COSMONAUTICS</topic><topic>HEATING</topic><topic>HELICOPTERS</topic><topic>HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS</topic><topic>JET-PROPULSION PLANTS</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>NON-POSITIVE DISPLACEMENT PUMPS</topic><topic>PERFORMING OPERATIONS</topic><topic>POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS</topic><topic>PUMPS FOR LIQUIDS OR ELASTIC FLUIDS</topic><topic>TRANSPORTING</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>REGIS MICHEL PAUL DELDALLE</creatorcontrib><creatorcontrib>CAROLINE FRANTZ</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>REGIS MICHEL PAUL DELDALLE</au><au>CAROLINE FRANTZ</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Hydraulic control system for controlling the orientation of fan blades</title><date>2014-04-16</date><risdate>2014</risdate><abstract>Hydraulic control system for controlling the orientation of fan blades of a turbomachine comprising at least one set of variable-pitch fan blades operated by actuators (10, 12) connected to a hydraulic pump (18), a small pitches protection valve (24, 26) controlled by an associated electrovalve (22) making it possible, on the ground, when the blades are oriented almost perpendicular to the axis of the turbomachine, to switch from a first operating zone (A) in which the rate at which the blades are oriented is slow to a second operating zone (B) in which the rate of orientation is appreciably higher, in which system the operating pressure of the hydraulic pump is controlled by the electrovalve that controls the small pitches protection valve so as to define two levels of output corresponding to the two operating zones.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | AEROPLANES AIRCRAFT AVIATION BLASTING COMBUSTION ENGINES COSMONAUTICS HEATING HELICOPTERS HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS JET-PROPULSION PLANTS LIGHTING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS PERFORMING OPERATIONS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS TRANSPORTING WEAPONS |
| title | Hydraulic control system for controlling the orientation of fan blades |
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