High-Speed Aircraft (open access)

High-Speed Aircraft

This report details the designs of high-speed aircraft from various countries from 1931 on, with special emphasis on the United States and Germany.
Date: May 1934
Creator: Schrenk, M.
System: The UNT Digital Library
The High-Speed Heinkel HE 70 Mail Airplane (open access)

The High-Speed Heinkel HE 70 Mail Airplane

This report details the design and construction of the Heinkel 70 mailplane and its comparison with the Lockheed "Orion".
Date: May 1934
Creator: Heinkel, Ernst
System: The UNT Digital Library
Torsional Stresses in Box Beams With Cross Sections Partially Restrained Against Warping (open access)

Torsional Stresses in Box Beams With Cross Sections Partially Restrained Against Warping

"The present report gives a method for computing the torsion of boxes with thin shear-resistant or simply tension-resistant walls under any torsional load, support and dimension. The final stress condition is developed from that of a principal system with unconstrained sectional warping corresponding to Bredt's formula and an additional stress condition due to constrained cross-sectional warping. This is computed by means of the deflection condition of the principal system from a statically indeterminate calculation" (p. 1).
Date: May 1934
Creator: Ebner, Hans
System: The UNT Digital Library