263 research outputs found
Transient Three-Dimensional Side Load Analysis of Out-of-Round Film Cooled Nozzles
The objective of this study is to investigate the effect of nozzle out-of-roundness on the transient startup side loads. The out-of-roundness could be the result of asymmetric loads induced by hardware attached to the nozzle, asymmetric internal stresses induced by previous tests and/or deformation, such as creep, from previous tests. The rocket engine studied encompasses a regeneratively cooled thrust chamber and a film cooled nozzle extension with film coolant distributed from a turbine exhaust manifold. The computational methodology is based on an unstructured-grid, pressure-based computational fluid dynamics formulation, and a transient inlet history based on an engine system simulation. Transient startup computations were performed with the out-of-roundness achieved by four degrees of ovalization of the nozzle: one perfectly round, one slightly out-of-round, one more out-of-round, and one significantly out-of-round. The computed side load physics caused by the nozzle out-of-roundness and its effect on nozzle side load are reported and discussed
The Justiciability of Fair Balance Under the Federal Advisory Committee Act: Toward a Deliberative Process Approach
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Aquilegia, Vol. 13 No. 1, January-February 1989: Newsletter of the Colorado Native Plant Society
https://epublications.regis.edu/aquilegia/1044/thumbnail.jp
The New Social Engineers in the Age of Obama: Black Corporate Lawyers and the Making of the First Black President
Fumbling Away the Season: Will the Expiration of the NFL-NFLPA CBA Result in the Loss of the 2011 Season?
The Quest for Uniformity in Mediation Confidentiality: Foolish Consistency or Crucial Predictability?
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