HALE airfoil

DESIGN OF AN AIRFOIL FOR
A HIGH-ALTITUDE, LONG-ENDURANCE REMOTELY PILOTED VEHICLE

http://www.rollinghillsresearch.com/Aero_Research/Files/AIAA-2003-0211_NLFairfoil.pdf

NLF1015 coordinates
NLF1015 picture
More accurate picture of NLF1015

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    • dodlithr
    • February 1st, 2009

    Yes, Dan Somers:

    http://www.airfoils.com/resume.htm

    He has also patented very interesting SNLF laminar airfoil, which has only cd=0.00283 @ cl=0.2314.

    http://www.freepatentsonline.com/y2004/0094659.html?query=Dan+Somers&stemming=on

    There are several Dan Somers airfoil patents in that collection.

    But check his wind tunnels:

    NASA Langley Low-Turbulence Pressure Tunnel (LTPT)
    Low-turbulence wind tunnel of Delft University of Technology Low Speed Laboratory
    The Pennsylvania State University low-speed, low-turbulence wind tunnel
    DLR Transonic Wind Tunnel Braunschweig (TWB)

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