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in subjects: "wind tunnels"

open access

Aerodynamic characteristics at subcritical and supercritical Mach numbers of two airfoil sections having sharp leading edges and extreme rearward positions of maximum thickness

From Introduction: "A 12-percent-chord-thick wedge section and a reversed NACA 0012 section were chosen for these tests as they are representative of sections having no boat tailing and appreciable boat tailing (i.e., blunt and rounded trailing edges, respectively), and the results of this investigation are compared with those obtained from a previous investigation of the NACA 0012 section. Conclusions are drawn regarding the relative merits of the two unconventional sections and the convention… more

Date: November 6, 1947

Creator: Eggers, A. J., Jr.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

An analysis of longitudinal-control problems encountered in flight at transonic speeds with a jet-propelled airplane

From Introduction: "This report presents an analysis based on flight and wind-tunnel test data directed toward the determination of the probable cause of the pitch-up. Wing pressure distribution and stability and control characteristics in the dive are also included."

Date: September 25, 1947

Creator: Brown, Harvey H.; Rolls, L. Stewart & Clousing, Lawrence A.