Wind-tunnel Investigations on Flexural-torsional Wing Flutter
This is a 1938 technical report from NASA's Technical Reports Server, a wind-tunnel study of wing flutter that combines bending and twisting, written for aeronautical engineers and researchers. The pictures are black-and-white plates of graphs of critical velocity, elastic radius and radius of gyration, plus photographs of a side attachment and a test model with a flat plate on a bracket, offering a designer little beyond the stark diagram style of engineering documentation.
