INNER BARREL OF AN ENGINE INLET WITH LASER-MACHINED ACOUSTIC PERFORATIONS

A forming system includes a femtosecond laser and a control unit that includes one or more processors operatively connected to the femtosecond laser. The femtosecond laser is configured to emit laser pulses (302) onto an inner surface (218) of a face sheet (134) of an acoustic inner barrel (120). Th...

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Hauptverfasser: BERTOLUCCI, Brandon L, HORST, Perry T, BAUMAN, John Scott, REEVES, Jake Adam, NEGLEY, Mark Alan, HERRERA, Eric
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Sprache:eng ; fre ; ger
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creator BERTOLUCCI, Brandon L
HORST, Perry T
BAUMAN, John Scott
REEVES, Jake Adam
NEGLEY, Mark Alan
HERRERA, Eric
description A forming system includes a femtosecond laser and a control unit that includes one or more processors operatively connected to the femtosecond laser. The femtosecond laser is configured to emit laser pulses (302) onto an inner surface (218) of a face sheet (134) of an acoustic inner barrel (120). The acoustic inner barrel (120) includes an acoustic core (128) comprising an array of hexagonal cells attached to an outer surface of the face sheet (134) that is opposite the inner surface (128). The control unit is configured to control the femtosecond laser to laser drill a plurality of perforations (150) in the face sheet (134) via emitting laser pulses (302) at pulse durations between about 100 femtoseconds and about 10,000 femtoseconds and at frequencies over 100,000 Hz such that the perforations (150) are formed without burning portions of the face sheet (134) or the acoustic core (128) surrounding the perforations (150).
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The control unit is configured to control the femtosecond laser to laser drill a plurality of perforations (150) in the face sheet (134) via emitting laser pulses (302) at pulse durations between about 100 femtoseconds and about 10,000 femtoseconds and at frequencies over 100,000 Hz such that the perforations (150) are formed without burning portions of the face sheet (134) or the acoustic core (128) surrounding the perforations (150).</description><language>eng ; fre ; ger</language><subject>AIR INTAKES FOR JET-PROPULSION PLANTS ; BLASTING ; CLADDING OR PLATING BY SOLDERING OR WELDING ; COMBUSTION ENGINES ; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ; GAS-TURBINE PLANTS ; HEATING ; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS ; LIGHTING ; MACHINE TOOLS ; MECHANICAL ENGINEERING ; METAL-WORKING NOT OTHERWISE PROVIDED FOR ; PERFORMING OPERATIONS ; SOLDERING OR UNSOLDERING ; TRANSPORTING ; WEAPONS ; WELDING ; WORKING BY LASER BEAM</subject><creationdate>2019</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&amp;date=20191211&amp;DB=EPODOC&amp;CC=EP&amp;NR=3578288A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20191211&amp;DB=EPODOC&amp;CC=EP&amp;NR=3578288A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>BERTOLUCCI, Brandon L</creatorcontrib><creatorcontrib>HORST, Perry T</creatorcontrib><creatorcontrib>BAUMAN, John Scott</creatorcontrib><creatorcontrib>REEVES, Jake Adam</creatorcontrib><creatorcontrib>NEGLEY, Mark Alan</creatorcontrib><creatorcontrib>HERRERA, Eric</creatorcontrib><title>INNER BARREL OF AN ENGINE INLET WITH LASER-MACHINED ACOUSTIC PERFORATIONS</title><description>A forming system includes a femtosecond laser and a control unit that includes one or more processors operatively connected to the femtosecond laser. 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subjects AIR INTAKES FOR JET-PROPULSION PLANTS
BLASTING
CLADDING OR PLATING BY SOLDERING OR WELDING
COMBUSTION ENGINES
CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
GAS-TURBINE PLANTS
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MACHINE TOOLS
MECHANICAL ENGINEERING
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SOLDERING OR UNSOLDERING
TRANSPORTING
WEAPONS
WELDING
WORKING BY LASER BEAM
title INNER BARREL OF AN ENGINE INLET WITH LASER-MACHINED ACOUSTIC PERFORATIONS
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