Circulation control wing: Difference between revisions

Revision as of 10:09, 24 July 2012

Revision as of 14:09, 5 August 2012

Line 1:

A '''circulation control wing''' (CCW) is a form of [[high-lift device]] for use on the main wing of an aircraft to increase the [[lift coefficient]]. CCW technology has been in the research and development phase for over sixty years, and the early models were called [[blown flaps]].<ref>{{cite web |url=http://www.sae.org/technical/papers/2005-01-3192 |title=Circulation Control Wing |accessdate=2007-12-15}}</ref>

The CCW works by increasing the velocity of the airflow over the [[leading edge]] and [[trailing edge]] of a specially designed aircraft [[wing]] using a series of blowing slots that eject high pressure jet air. The wing has a rounded trailing edge to tangentially eject the air through the [[Coanda]]Coandă effect]] thus causing lift.<ref>{{cite web |url=http://pdf.aiaa.org/preview/CDReadyMFLC06_1187/PV2006_3011.pdf |title=Large Eddy Simulation of a Circulation Control Airfoil. |accessdate=2007-12-18 |last=Slomski |first=J.F. |coauthors= |date=2006-06-05|format=PDF}}</ref> The increase in [[velocity]] of the airflow over the wing also adds to the lift force through conventional [[airfoil]] lift production.<ref name="cc">{{cite book |title=FlightWise |last=Carpenter |first=Chris |year=1996 |publisher=Airlife Publishing Ltd |___location= UK |}}</ref>

[[Image:Circulation Control Airfoil.svg|thumb|The [[trailing edge]] of a CCW showing the blowing slot and tangential [[coanda]] airflow.]]