Damped combustor cowl structure

A friction-damped combustor cowl (30) is formed of first (32) and second (38) plies of sheet material of mating, generally annular configuration defining a central cowl axis and of axially elongated and aerodynamically contoured configuration have respective fore end portions (34,40) which are curle...

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Hauptverfasser:	KOSHOFFER, JOHN MICHAEL, NAPOLI, PHILLIP DANIEL
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING COMBUSTION APPARATUS COMBUSTION PROCESSES GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS HEATING LIGHTING MECHANICAL ENGINEERING WEAPONS
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creator	KOSHOFFER, JOHN MICHAEL NAPOLI, PHILLIP DANIEL
description	A friction-damped combustor cowl (30) is formed of first (32) and second (38) plies of sheet material of mating, generally annular configuration defining a central cowl axis and of axially elongated and aerodynamically contoured configuration have respective fore end portions (34,40) which are curled to form a cowl leading edge (44) of arcuate cross section and corresponding fore edges which are integrally joined, and respective aft end portions (42,36) which define a cowl trailing edge (46) and corresponding aft edges which are integrally joined. Surface contact of the contiguous surfaces of the laminated and mating first and second plies (32,38) provides vibration damping under normal operating conditions in an alternative and combustor cowl, a spring element is received and maintained under compression within the curled leading edge of the combustor cowl and maintains a resilient biasing force maintaining surface contact between the spring element and the interior surface of the curled leading edge, thereby maintaining frictional surface contact and requisite vibration damping under normal operating conditions.
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Surface contact of the contiguous surfaces of the laminated and mating first and second plies (32,38) provides vibration damping under normal operating conditions in an alternative and combustor cowl, a spring element is received and maintained under compression within the curled leading edge of the combustor cowl and maintains a resilient biasing force maintaining surface contact between the spring element and the interior surface of the curled leading edge, thereby maintaining frictional surface contact and requisite vibration damping under normal operating conditions.</description><language>eng ; fre ; ger</language><subject>BLASTING ; COMBUSTION APPARATUS ; COMBUSTION PROCESSES ; GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS ; HEATING ; LIGHTING ; MECHANICAL ENGINEERING ; WEAPONS</subject><creationdate>1992</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=19921021&DB=EPODOC&CC=EP&NR=0509801A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76318</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19921021&DB=EPODOC&CC=EP&NR=0509801A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KOSHOFFER, JOHN MICHAEL</creatorcontrib><creatorcontrib>NAPOLI, PHILLIP DANIEL</creatorcontrib><title>Damped combustor cowl structure</title><description>A friction-damped combustor cowl (30) is formed of first (32) and second (38) plies of sheet material of mating, generally annular configuration defining a central cowl axis and of axially elongated and aerodynamically contoured configuration have respective fore end portions (34,40) which are curled to form a cowl leading edge (44) of arcuate cross section and corresponding fore edges which are integrally joined, and respective aft end portions (42,36) which define a cowl trailing edge (46) and corresponding aft edges which are integrally joined. Surface contact of the contiguous surfaces of the laminated and mating first and second plies (32,38) provides vibration damping under normal operating conditions in an alternative and combustor cowl, a spring element is received and maintained under compression within the curled leading edge of the combustor cowl and maintains a resilient biasing force maintaining surface contact between the spring element and the interior surface of the curled leading edge, thereby maintaining frictional surface contact and requisite vibration damping under normal operating conditions.</description><subject>BLASTING</subject><subject>COMBUSTION APPARATUS</subject><subject>COMBUSTION PROCESSES</subject><subject>GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1992</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJB3ScwtSE1RSM7PTSotLskvArLKcxSKS4pKk0tKi1J5GFjTEnOKU3mhNDeDgptriLOHbmpBfnxqcUFicmpeakm8a4CBqYGlhYGho6ExEUoA_SUkyw</recordid><startdate>19921021</startdate><enddate>19921021</enddate><creator>KOSHOFFER, JOHN MICHAEL</creator><creator>NAPOLI, PHILLIP DANIEL</creator><scope>EVB</scope></search><sort><creationdate>19921021</creationdate><title>Damped combustor cowl structure</title><author>KOSHOFFER, JOHN MICHAEL ; NAPOLI, PHILLIP DANIEL</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP0509801A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>1992</creationdate><topic>BLASTING</topic><topic>COMBUSTION APPARATUS</topic><topic>COMBUSTION PROCESSES</topic><topic>GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>KOSHOFFER, JOHN MICHAEL</creatorcontrib><creatorcontrib>NAPOLI, PHILLIP DANIEL</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KOSHOFFER, JOHN MICHAEL</au><au>NAPOLI, PHILLIP DANIEL</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Damped combustor cowl structure</title><date>1992-10-21</date><risdate>1992</risdate><abstract>A friction-damped combustor cowl (30) is formed of first (32) and second (38) plies of sheet material of mating, generally annular configuration defining a central cowl axis and of axially elongated and aerodynamically contoured configuration have respective fore end portions (34,40) which are curled to form a cowl leading edge (44) of arcuate cross section and corresponding fore edges which are integrally joined, and respective aft end portions (42,36) which define a cowl trailing edge (46) and corresponding aft edges which are integrally joined. 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subjects	BLASTING COMBUSTION APPARATUS COMBUSTION PROCESSES GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS HEATING LIGHTING MECHANICAL ENGINEERING WEAPONS
title	Damped combustor cowl structure
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