Active Separation Control on the Flap of a Two-Dimensional Generic High-Lift Configuration
The paper describes experimental results of controlling flow separation by periodic excitation on the flap of a generic high-lift configuration. The single slotted flap of the two-dimensional test model is equipped with a robust and reliable actuator system that fits inside the flap. The flow is exc...
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Veröffentlicht in: | Journal of aircraft 2007-05, Vol.44 (3), p.865-874 |
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container_title | Journal of aircraft |
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creator | Petz, Ralf Nitsche, Wolfgang |
description | The paper describes experimental results of controlling flow separation by periodic excitation on the flap of a generic high-lift configuration. The single slotted flap of the two-dimensional test model is equipped with a robust and reliable actuator system that fits inside the flap. The flow is excited using a pulsed wall jet that emanates from the upper surface near the flap's leading edge through a small spanwise-oriented slot. By preventing the flow from separating or by reattaching the separated flow, lift and drag are substantially improved, resulting in a lift-to-drag ratio enhancement of 20-25%. Because of the actuator assembly with spanwise individually addressable segments, the separated flow can be forced to attach only to certain parts of the flap. Local spanwise excitation is thus used to generate a rolling moment without the need to deflect an aileron. [PUBLICATION ABSTRACT] |
doi_str_mv | 10.2514/1.25425 |
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The single slotted flap of the two-dimensional test model is equipped with a robust and reliable actuator system that fits inside the flap. The flow is excited using a pulsed wall jet that emanates from the upper surface near the flap's leading edge through a small spanwise-oriented slot. By preventing the flow from separating or by reattaching the separated flow, lift and drag are substantially improved, resulting in a lift-to-drag ratio enhancement of 20-25%. Because of the actuator assembly with spanwise individually addressable segments, the separated flow can be forced to attach only to certain parts of the flap. Local spanwise excitation is thus used to generate a rolling moment without the need to deflect an aileron. 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[PUBLICATION ABSTRACT]</description><subject>Aerodynamics</subject><subject>Aircraft</subject><subject>Applied fluid mechanics</subject><subject>Exact sciences and technology</subject><subject>Flow control</subject><subject>Flow velocity</subject><subject>Fluid dynamics</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Physics</subject><issn>0021-8669</issn><issn>1533-3868</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNpt0E1LHTEUBuBQWuitLf0LobSKi7H5mkxmKddPuOBCu-kmnJubaCR3Mk0yWv-90RGE1tUJ5Mmbcw5CXyk5YC0VP2ktgrXv0IK2nDdcSfUeLQhhtFFS9h_Rp5xvCSGKdN0C_T40xd9ZfGlHSFB8HPAyDiXFgOux3Fh8EmDE0WHAV_exOfJbO-TKIOBTO9jkDT7z1zfNyrvy9NT562kO-ow-OAjZfnmpO-jXyfHV8qxZXZyeLw9XDfBOlqZlfc85U8QZBpwou3YgxLrrDGG8JaCoFRuzkdxJC653pq_jub72zzaW8jXfQbtz7pjin8nmorc-GxsCDDZOWdf8tpW9qPDbP_A2TqlOUg3pJGmZYBXtzcikmHOyTo_JbyE9aEr004I11c8LrvLHSxxkA8ElGIzPr1wpwYRU1X2fHXiA1y__j9t_k83Xetw47aYQiv1b-CP5yZJZ</recordid><startdate>20070501</startdate><enddate>20070501</enddate><creator>Petz, Ralf</creator><creator>Nitsche, Wolfgang</creator><general>American Institute of Aeronautics and Astronautics</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>L7M</scope><scope>U9A</scope></search><sort><creationdate>20070501</creationdate><title>Active Separation Control on the Flap of a Two-Dimensional Generic High-Lift Configuration</title><author>Petz, Ralf ; Nitsche, Wolfgang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a376t-529933280fc2a308ebfa44b77c02350a81e4dcd63f6eaf9fc9542f90802de13b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Aerodynamics</topic><topic>Aircraft</topic><topic>Applied fluid mechanics</topic><topic>Exact sciences and technology</topic><topic>Flow control</topic><topic>Flow velocity</topic><topic>Fluid dynamics</topic><topic>Fundamental areas of phenomenology (including applications)</topic><topic>Physics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Petz, Ralf</creatorcontrib><creatorcontrib>Nitsche, Wolfgang</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of aircraft</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Petz, Ralf</au><au>Nitsche, Wolfgang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Active Separation Control on the Flap of a Two-Dimensional Generic High-Lift Configuration</atitle><jtitle>Journal of aircraft</jtitle><date>2007-05-01</date><risdate>2007</risdate><volume>44</volume><issue>3</issue><spage>865</spage><epage>874</epage><pages>865-874</pages><issn>0021-8669</issn><eissn>1533-3868</eissn><coden>JAIRAM</coden><abstract>The paper describes experimental results of controlling flow separation by periodic excitation on the flap of a generic high-lift configuration. 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subjects | Aerodynamics Aircraft Applied fluid mechanics Exact sciences and technology Flow control Flow velocity Fluid dynamics Fundamental areas of phenomenology (including applications) Physics |
title | Active Separation Control on the Flap of a Two-Dimensional Generic High-Lift Configuration |
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