MISTUNED ROTORS FOR GAS TURBINE ENGINES
A mistuned rotor for a gas turbine engine includes a plurality of airfoils (112, 114) and each airfoil has a span (S) that extends from 0% at a root to 100% at a tip, a chord (CH) that extends from 0% at a leading edge (206) to 100% at a trailing edge (208) and a pressure side opposite a suction sid...
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| creator | REPP, John GEBRE-GIORGIS, Yoseph NOLCHEFF, Nick GUNARAJ, John A |
| description | A mistuned rotor for a gas turbine engine includes a plurality of airfoils (112, 114) and each airfoil has a span (S) that extends from 0% at a root to 100% at a tip, a chord (CH) that extends from 0% at a leading edge (206) to 100% at a trailing edge (208) and a pressure side opposite a suction side. The pressure side of each airfoil has a pressure side surface shape and the suction side of each airfoil has a suction side surface shape based on an operating state of the rotor. Each airfoil has the same suction side surface shape between 10% and 90% of the chord and between 80% and 100% of the span at a first state. At least one first airfoil has a different suction side surface shape between 10% and 90% of the chord and between 80% and 100% of the span than at least one second airfoil at a static state of the rotor. A method of manufacturing a mistuned rotor includes determining a second working shape and a third working shape for at least one of the suction or pressure side surface that are different from each other. |
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The pressure side of each airfoil has a pressure side surface shape and the suction side of each airfoil has a suction side surface shape based on an operating state of the rotor. Each airfoil has the same suction side surface shape between 10% and 90% of the chord and between 80% and 100% of the span at a first state. At least one first airfoil has a different suction side surface shape between 10% and 90% of the chord and between 80% and 100% of the span than at least one second airfoil at a static state of the rotor. A method of manufacturing a mistuned rotor includes determining a second working shape and a third working shape for at least one of the suction or pressure side surface that are different from each other.</description><language>eng ; fre ; ger</language><subject>BLASTING ; ENGINE PLANTS IN GENERAL ; HEATING ; LIGHTING ; MACHINES OR ENGINES IN GENERAL ; MECHANICAL ENGINEERING ; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES ; NON-POSITIVE DISPLACEMENT PUMPS ; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS ; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ; STEAM ENGINES ; WEAPONS</subject><creationdate>2024</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=20240911&DB=EPODOC&CC=EP&NR=3650638B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76516</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20240911&DB=EPODOC&CC=EP&NR=3650638B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>REPP, John</creatorcontrib><creatorcontrib>GEBRE-GIORGIS, Yoseph</creatorcontrib><creatorcontrib>NOLCHEFF, Nick</creatorcontrib><creatorcontrib>GUNARAJ, John A</creatorcontrib><title>MISTUNED ROTORS FOR GAS TURBINE ENGINES</title><description>A mistuned rotor for a gas turbine engine includes a plurality of airfoils (112, 114) and each airfoil has a span (S) that extends from 0% at a root to 100% at a tip, a chord (CH) that extends from 0% at a leading edge (206) to 100% at a trailing edge (208) and a pressure side opposite a suction side. The pressure side of each airfoil has a pressure side surface shape and the suction side of each airfoil has a suction side surface shape based on an operating state of the rotor. Each airfoil has the same suction side surface shape between 10% and 90% of the chord and between 80% and 100% of the span at a first state. At least one first airfoil has a different suction side surface shape between 10% and 90% of the chord and between 80% and 100% of the span than at least one second airfoil at a static state of the rotor. A method of manufacturing a mistuned rotor includes determining a second working shape and a third working shape for at least one of the suction or pressure side surface that are different from each other.</description><subject>BLASTING</subject><subject>ENGINE PLANTS IN GENERAL</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MACHINES OR ENGINES IN GENERAL</subject><subject>MECHANICAL ENGINEERING</subject><subject>NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES</subject><subject>NON-POSITIVE DISPLACEMENT PUMPS</subject><subject>POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS</subject><subject>PUMPS FOR LIQUIDS OR ELASTIC FLUIDS</subject><subject>STEAM ENGINES</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2024</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFD39QwOCfVzdVEI8g_xDwpWcPMPUnB3DFYICQ1y8vRzVXD1cwdSwTwMrGmJOcWpvFCam0HBzTXE2UM3tSA_PrW4IDE5NS-1JN41wNjM1MDM2MLJ0JgIJQCt5COM</recordid><startdate>20240911</startdate><enddate>20240911</enddate><creator>REPP, John</creator><creator>GEBRE-GIORGIS, Yoseph</creator><creator>NOLCHEFF, Nick</creator><creator>GUNARAJ, John A</creator><scope>EVB</scope></search><sort><creationdate>20240911</creationdate><title>MISTUNED ROTORS FOR GAS TURBINE ENGINES</title><author>REPP, John ; GEBRE-GIORGIS, Yoseph ; NOLCHEFF, Nick ; GUNARAJ, John A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP3650638B13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2024</creationdate><topic>BLASTING</topic><topic>ENGINE PLANTS IN GENERAL</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MACHINES OR ENGINES IN GENERAL</topic><topic>MECHANICAL ENGINEERING</topic><topic>NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES</topic><topic>NON-POSITIVE DISPLACEMENT PUMPS</topic><topic>POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS</topic><topic>PUMPS FOR LIQUIDS OR ELASTIC FLUIDS</topic><topic>STEAM ENGINES</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>REPP, John</creatorcontrib><creatorcontrib>GEBRE-GIORGIS, Yoseph</creatorcontrib><creatorcontrib>NOLCHEFF, Nick</creatorcontrib><creatorcontrib>GUNARAJ, John A</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>REPP, John</au><au>GEBRE-GIORGIS, Yoseph</au><au>NOLCHEFF, Nick</au><au>GUNARAJ, John A</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>MISTUNED ROTORS FOR GAS TURBINE ENGINES</title><date>2024-09-11</date><risdate>2024</risdate><abstract>A mistuned rotor for a gas turbine engine includes a plurality of airfoils (112, 114) and each airfoil has a span (S) that extends from 0% at a root to 100% at a tip, a chord (CH) that extends from 0% at a leading edge (206) to 100% at a trailing edge (208) and a pressure side opposite a suction side. The pressure side of each airfoil has a pressure side surface shape and the suction side of each airfoil has a suction side surface shape based on an operating state of the rotor. Each airfoil has the same suction side surface shape between 10% and 90% of the chord and between 80% and 100% of the span at a first state. At least one first airfoil has a different suction side surface shape between 10% and 90% of the chord and between 80% and 100% of the span than at least one second airfoil at a static state of the rotor. A method of manufacturing a mistuned rotor includes determining a second working shape and a third working shape for at least one of the suction or pressure side surface that are different from each other.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | BLASTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS STEAM ENGINES WEAPONS |
| title | MISTUNED ROTORS FOR GAS TURBINE ENGINES |
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