A Study of the Effects of Radii of Gyration and Altitude on Aileron Effectiveness at High Speed (open access)

A Study of the Effects of Radii of Gyration and Altitude on Aileron Effectiveness at High Speed

"The variation in the necessary aileron control and in the time required to bank to 45 degrees and 90 degrees with altitude and radii of gyration for a typical fighter or a pursuit airplane have been computed and are presented herein." The lateral motions and impact pressure for several conditions of flight are provided. The report concludes that "the aileron system...should be designed for rolling-moment requirements at high altitude and the hinge-moment limitations at low altitude".
Date: April 1943
Creator: Fehlner, Leo F.
System: The UNT Digital Library
Flight Tests of a Glider Model Towed by Twin Parallel Towlines (open access)

Flight Tests of a Glider Model Towed by Twin Parallel Towlines

"The stability characteristics of a glider towed by twin parallel towlines have been studied in the NACA free-flight tunnel. A preliminary theoretical analysis of the stability of a glider restrained from yawing was followed by an experimental investigation of the stability of a model towed from fixed tunnel points in such a way as to simulate tow in level flight. The results of the tests confirm the theoretical analysis and indicate that a pilotless, stable, towed-glider system is possible when twin parallel towcables are used" (p. 1).
Date: April 1943
Creator: Pitkin, Marvin & McKinney, Marion O., Jr.
System: The UNT Digital Library
Effect of Varying Percentages of Exhaust Gas on Engine Performance (open access)

Effect of Varying Percentages of Exhaust Gas on Engine Performance

"These tests were run to determine the effect that mixing engine exhaust gas with engine intake air has on fuel knock limit, specific fuel consumption, and air consumption." Information about the effect on pressure, air consumption, and fuel consumption is detailed.
Date: April 1943
Creator: Sanders, Newell D. & Barnett, Henry C.
System: The UNT Digital Library