VORTEX GENERATORS ON ROTOR BLADES TO DELAY AN ONSET OF LARGE OSCILLATORY PITCHING MOMENTS AND INCREASE MAXIMUM LIFT
An airborne mobile platform generally includes a plurality of rotating rotor blades operating in an airflow that forms a boundary layer on each of the rotor blades. At least one of the rotor blades includes a section that encounters the airflow that includes an unsteady subsonic airflow having at le...
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| creator | MCVEIGH MICHAEL A MACIOLEK ROBERT F |
| description | An airborne mobile platform generally includes a plurality of rotating rotor blades operating in an airflow that forms a boundary layer on each of the rotor blades. At least one of the rotor blades includes a section that encounters the airflow that includes an unsteady subsonic airflow having at least a varying angle of attack. At least one of the rotor blades also includes one or more vortex generators on the at least one of the rotor blades that generate a vortex that interacts with the boundary layer to at least delay an onset of separation of the boundary layer, to increase a value of an unsteady maximum lift coefficient and to reduce a value of an unsteady pitching moment coefficient for the section. |
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At least one of the rotor blades includes a section that encounters the airflow that includes an unsteady subsonic airflow having at least a varying angle of attack. At least one of the rotor blades also includes one or more vortex generators on the at least one of the rotor blades that generate a vortex that interacts with the boundary layer to at least delay an onset of separation of the boundary layer, to increase a value of an unsteady maximum lift coefficient and to reduce a value of an unsteady pitching moment coefficient for the section.</description><language>eng</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 ; STEAM ENGINES ; WEAPONS</subject><creationdate>2008</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=20080619&DB=EPODOC&CC=US&NR=2008145219A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20080619&DB=EPODOC&CC=US&NR=2008145219A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MCVEIGH MICHAEL A</creatorcontrib><creatorcontrib>MACIOLEK ROBERT F</creatorcontrib><title>VORTEX GENERATORS ON ROTOR BLADES TO DELAY AN ONSET OF LARGE OSCILLATORY PITCHING MOMENTS AND INCREASE MAXIMUM LIFT</title><description>An airborne mobile platform generally includes a plurality of rotating rotor blades operating in an airflow that forms a boundary layer on each of the rotor blades. 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At least one of the rotor blades also includes one or more vortex generators on the at least one of the rotor blades that generate a vortex that interacts with the boundary layer to at least delay an onset of separation of the boundary layer, to increase a value of an unsteady maximum lift coefficient and to reduce a value of an unsteady pitching moment coefficient for the section.</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>STEAM ENGINES</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2008</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNi0EKwjAQRbtxIeodBlwLbVXQ5dhOayDJSDKVdlWKxJVood4fI3gAV__Bf2-eTFd2Qi3UZMmhsPPAFhxHgpPGkjwIQ0kaO0AbP08CXIFGVxOwL5TW36yDi5LirGwNhg1Z8VEvQdnCEXoCg60yjQGtKlkms_vwmMLqt4tkXVGMN2F89WEah1t4hnff-DxND9lun2dHzLb_WR9jejmQ</recordid><startdate>20080619</startdate><enddate>20080619</enddate><creator>MCVEIGH MICHAEL A</creator><creator>MACIOLEK ROBERT F</creator><scope>EVB</scope></search><sort><creationdate>20080619</creationdate><title>VORTEX GENERATORS ON ROTOR BLADES TO DELAY AN ONSET OF LARGE OSCILLATORY PITCHING MOMENTS AND INCREASE MAXIMUM LIFT</title><author>MCVEIGH MICHAEL A ; MACIOLEK ROBERT F</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US2008145219A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2008</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>STEAM ENGINES</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>MCVEIGH MICHAEL A</creatorcontrib><creatorcontrib>MACIOLEK ROBERT F</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>MCVEIGH MICHAEL A</au><au>MACIOLEK ROBERT F</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>VORTEX GENERATORS ON ROTOR BLADES TO DELAY AN ONSET OF LARGE OSCILLATORY PITCHING MOMENTS AND INCREASE MAXIMUM LIFT</title><date>2008-06-19</date><risdate>2008</risdate><abstract>An airborne mobile platform generally includes a plurality of rotating rotor blades operating in an airflow that forms a boundary layer on each of the rotor blades. At least one of the rotor blades includes a section that encounters the airflow that includes an unsteady subsonic airflow having at least a varying angle of attack. At least one of the rotor blades also includes one or more vortex generators on the at least one of the rotor blades that generate a vortex that interacts with the boundary layer to at least delay an onset of separation of the boundary layer, to increase a value of an unsteady maximum lift coefficient and to reduce a value of an unsteady pitching moment coefficient for the section.</abstract><oa>free_for_read</oa></addata></record> |
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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 STEAM ENGINES WEAPONS |
| title | VORTEX GENERATORS ON ROTOR BLADES TO DELAY AN ONSET OF LARGE OSCILLATORY PITCHING MOMENTS AND INCREASE MAXIMUM LIFT |
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