The Online Books Page

Books by Richard R. Heldenfels:

Books in the extended shelves:

• Heldenfels, Richard R.: The effect of nonuniform temperature distributions on the stresses and distortions of stiffened-shell structures (National Advisory Committee for Aeronautics, 1950), also by United States National Advisory Committee for Aeronautics (page images at HathiTrust)
• Heldenfels, Richard R.: Experimental and theoretical determination of thermal stresses in a flat plate (National Advisory Committee for Aeronautics, 1952), also by William M. Roberts, Langley Aeronautical Laboratory, and United States National Advisory Committee for Aeronautics (page images at HathiTrust)
• Heldenfels, Richard R.: Historical perspectives on thermostructural research at the NACA Langley Aeronautical Laboratory from 1948 to 1958 (National Aeronautics and Space Administration, Scientific and Technical Information Branch ;, 1982), also by United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch and Langley Research Center (page images at HathiTrust)
• Heldenfels, Richard R.: A numerical method for the stress analysis of stiffened-shell structures under nonuniform temperature distributions (National Advisory Committee for Aeronautics, 1950), also by United States National Advisory Committee for Aeronautics (page images at HathiTrust)
• Heldenfels, Richard R.: Preliminary results of supersonic-jet tests of simplified wing structures (National Advisory Committee for Aeronautics, 1953), also by Richard Rosecrans, Langley Aeronautical Laboratory, and United States. National Adviosry Committee for Aeronautics (page images at HathiTrust)

Find more by Richard R. Heldenfels at your library, or elsewhere.