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The Influence of the Diameter Ratio on the Characteristics Diagram of the Axial Compressor

Description: With the further development of axial blowers into highly loaded flow machines, the influence of the diameter ratio upon air output and efficiency gains in significance. Clarification of this matter is important for single-stage axial compressors, and is of still greater importance for multistage ones, and particularly for aircraft power plants. Tests with a single-stage axial blower gave a decrease in the attainable maximum pressure coefficient and optimum efficiency as the diameter ratio incr… more
Date: April 1948
Creator: Eckert, B.; Pflüger, F. & Weinig, F.
Item Type: Refine your search to only Report
open access

[Memorandums on the Subject of Wind Tunnel Measurements of the Henschel Missile "Zitterrochen"]

Description: "At the request of the Henschel Aircraft Works. A. G. Berlin. three models of the missile "Zitterrochen" were investigated at subsonic velocities.(open jet 215-millimeter diameter) and at supersonic velocities (open jet 110 by 130 millimeters) in order to determine the effect of various wing forms on the air forces and moments. Three-component measurements were taken, and one model was also investigated with deflected control plates" (p. 1).
Date: April 1948
Creator: Weber & Kehl
Item Type: Refine your search to only Report
open access

Planing of Watercraft

Description: The present report deals with the processes accompanying the planing of a planing boat or a seaplane on water. The study is largely based upon theoretical investigations; mathematical problems and proofs are not discussed. To analyze theoretical actual planing processes, giving due consideration to all aspects of the problem, is probably not possible. The theories therefore treat various simple limiting cases, which in their entirety give a picture of the planing processes and enable the interp… more
Date: April 1948
Creator: Wagner, Herbert
Item Type: Refine your search to only Report
open access

Theoretical Analysis of Stationary Potential Flows and Boundary Layers at High Speed

Description: "The present report consists of two parts. The first part deals with the two-dimensional stationary flow in the presence of local supersonic zones. A numerical method of integration of the equation of gas dynamics is developed. Proceeding from solutions at great distance from the body the flow pattern is calculated step by step" (p. 1).
Date: April 1948
Creator: Oswatitsch, K. & Wieghardt, K.
Item Type: Refine your search to only Report
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