Geometry parametrization and aerodynamic characteristics of axisymmetric afterbodies

A key aspect of the preliminary design process for a new generation combat aircraft is the prediction of afterbody aerodynamic drag. Current prediction methods for preliminary design are constrained in terms of number of independent geometric degrees of freedom that can be studied due to the classic circular arc or conical afterbody geometry parametrization. In addition, the amount of data available for the construction of the reliable performance correlations is too sparse. This paper presents a methodology for the generation of aerodynamic performance maps for transonic axisymmetric afterbody and exhaust systems. It uses a novel parametric geometry definition along with a compressible flow solver to conduct an extensive design space exploration. The proposed geometry parametrization is based on the Class Shape Transformation method and it enables the assessment of the aerodynamic performance of a wider range of afterbodies at the expense of one additional geometric degree of freedom. Relative to the conventional approach, this enables the exploration of a wider design space and the construction of more complete aerodynamic performance maps. This research quantifies the impact of a number of geometric degrees of freedom on the aerodynamic performance of transonic afterbody and exhaust systems at different operating conditions

Published reports and memoranda of the Aeronautical Research Council numbers 3751-3850

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Reports and memoranda.

Beginning with no. 650 each hundredth number contains a list of the Reports and memoranda published since the last list.Beginning with no. 650 each hundredth number contains a list of the Reports and memoranda published since the last list.Mode of access: Internet.No. 1-673 issued by the Advisory Committee for Aeronautics: no. 674- issued variously by the Aeronautical Research Committee or the Aeronautical Research Council.Index: 1909-1947, 1 v., 1957.Some numbers issued also in its Report, 1909/1910 and others in its Technical report

Reports and memoranda /

Beginning with no. 650 each hundredth number contains a list of the Reports and memoranda published since the last list.Beginning with no. 650 each hundredth number contains a list of the Reports and memoranda published since the last list.Mode of access: Internet.No. 1-673 issued by the Advisory Committee for Aeronautics: no. 674- issued variously by the Aeronautical Research Committee or the Aeronautical Research Council.Some numbers issued also in its Report, 1909/1910 and others in its Technical report

Steady two-dimensional flow past a solid cylinder in a non-uniform stream

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A theory of the blockage effects on bluff bodies and stalled wings in a closed wind tunnel

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Proposed ground and flight check-out of variable L/D system installed in variable stability T-33

"T-33. TM3."Cover title.Mode of access: Internet