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Full-Scale Investigation of the Maximum Lift and Flow Characteristics of an Airplane Having Approximately Triangular Plan Form
Report discussing an investigation of the DM-1 glider, which has an approximately triangular plan form, with auxiliary studies of a model of triangular wings. The pitching-moment coefficient, drag coefficient, and angle of attack with the lift coefficient are provided. Results indicated that the angles of descent without power are likely to be prohibitive and airplanes with the tested type of wings will not be able to land safely without power.
Date:
February 12, 1947
Creator:
Wilson, Herbert A., Jr. & Lovell, J. Calvin
System:
The UNT Digital Library
Investigation of Rim Cracking in Turbine Wheels with Welded Blades
Rim cracking in turbine wheels with welded blades was evaluated. The problem is explained on the basis of the occurrence of plastic flow in the rim during transient starting conditions when thermal compressive stresses resulting from high-temperature gradients exceed the proportional elastic limit of the material.
Date:
February 12, 1947
Creator:
Millenson, M. B. & Manson, S. S.
System:
The UNT Digital Library