Torsional Stiffness of Thin-walled Shells Having Reinforcing Cores and Rectangular, Triangular, Or Diamond Cross Section

by Alberta Y. Alksne, George J. Nothwang, Harvey G. McComb, Henry H. Heyson, John H. Povolny, Keith C. Harder, Max A. Heaslet, Mitchel H. Bertram, Rinaldo J. Brun, W. E. Moeckel, United States. National Advisory Committee for Aeronautics, E. B. Klunker, Fred W. Steffen, John R. Spreiter, S. Katzoff, Jack G. McArdle