[Flightgear-devel] Gold mine of helicopter airfoil data

[Joacim P. <no...@tu...>]

Thought I'd share this find -- discovered it just now:
http://ntrs.nasa.gov/
Document-ID: 19770018207
Title: US Army helicopter design datcom. Volume 1 Airfoils
Author: Leo Dadone
Abstract:
 	This report contains airfoil data of interest for rotor
 	applications. The data is presented in the form of lift, drag, and
 	pitching moment coefficients and, in most cases, it covers the
 	complete Mach number range from low subsonic to supercritical flow
 	conditions. An introductory section presents airfoil data trends
 	and information pertaining to the source and usefulness of such
 	data.

The pdf is >19MB

No traces of a volume 2 at NTRS. Maybe there never was one.