Effect Of Blade Section Drag Characteristics On Rotor Performance

[kolibri282]

report: naca-acr-L4H05
title: Effect On Helicopter Performance Of Modifications in Profile-Drag Characteristics Of Rotor Blade Airfoil Sections
author: F. B. Gustavson
http://www.dtic.mil/cgi-bin/GetTRDoc?Location=U2&doc=GetTRDoc.pdf&AD=ADA800614