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Charts for Helicopter-Performance Estimation
Report presenting charts relating helicopter aerodynamic design variables to performance in steady powered flight. The flight conditions covered are hovering, climb, and horizontal flight. The use of the charts is illustrated by numerical examples in order that computations can be made for particular problems.
Date:
August 1945
Creator:
Talkin, Herbert W.
System:
The UNT Digital Library
A simple method for estimating terminal velocity including effect of compressibility on drag
Report presenting a generalized drag curve providing an estimate for the drag rise due to compressibility as obtained from an analysis of wind-tunnel data of several airfoils, fuselages, nacelles, and windshields at speeds up to and above the wing critical speed. Results regarding drag characteristics and terminal-velocity calculation are provided.
Date:
August 1945
Creator:
Bielat, Ralph P.
System:
The UNT Digital Library