NDLI: Trailing edge blowing on a two-dimensional six-percent thick elliptical circulation control airfoil up to transonic conditions

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Trailing edge blowing on a two-dimensional six-percent thick elliptical circulation control airfoil up to transonic conditions

Content Provider	NASA Technical Reports Server (NTRS)
Author	Alexander, Michael G. Florance, Jennifer P. Keller, Donald F. Johnson, Stuart K. Anders, Scott G.
Copyright Year	2005
Description	A wind tunnel test was conducted in the NASA Langley Transonic Dynamics Tunnel (TDT) on a six percent thick slightly cambered elliptical circulation control airfoil with both upper and lower surface blowing capability. Parametric evaluations of jet slot heights and Coanda surface shapes were conducted at momentum coefficients (Cm) from 0.0 to 0.12. Test data were acquired at Mach numbers of 0.3, 0.5, 0.7, 0.8, and 0.84 at Reynolds numbers per foot of 2.43 x 105 to 1.05 x 106. For a transonic condition, (Mach = 0.8 at alpha = 3 degrees), it was generally found the smaller slot and larger Coanda surface combination was overall more effective than other slot/Coanda surface combinations. Lower surface blowing was not as effective as the upper surface blowing over the same range of momentum coefficients. No appreciable Coanda surface, slot height, or slot blowing position preference was indicated transonically with the dual slot blowing.
File Size	6426506
Page Count	134
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20050165090
Archival Resource Key	ark:/13960/t5m95629g
Language	English
Publisher Date	2005-03-01
Access Restriction	Open
Subject Keyword	Aerodynamics Static Pressure Pitching Moments Data Acquisition Transonic Wind Tunnels Reynolds Number Two Dimensional Models Momentum Airfoils Upper Surface Blowing Wing Slots Circulation Control Airfoils Wing Camber Ellipticity Trailing Edges Wind Tunnel Tests Coanda Effect Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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