Flow Separation and Side-Loads in Rocket Nozzles
Hagemann, G. and Terhardt, M. and Frey, M. and Reijasse, P. and Onofri, M. and Nasuti, F. and Östlund, J. (2000) Flow Separation and Side-Loads in Rocket Nozzles. In: Fourth International Symposium on Liquid Space Propulsion - Scientific Progress in the Service of Space Access at the Beginning of the Third Millennium -. 4th International Symposium on Space Propulsion, Heilbronn, March 13-15, 2000.
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During the transient start-up of a rocket engine operating against an ambient pressure, the exhaust flow separates from the nozzle wall at a certain pressure ratio of wall pressure to ambient pressure. Furthermore, if the chamber pressure at nominal operation condition is not high enough to reach full flowing in overexpanded flow condition, flow separation will occur even for steady state operation Flow separation is a strongly three-dimensional instationary process, and lateral forces may be generated, the so called side-loads. The physical origins of flow separation and side-loads and its theoretical prediction have been the key objectives for several experimental and theoretical studies in the past decades. This paper addresses the physical background of flow separation and side-loads, and gives an overview on the state-of-the-art prediction for both phenomena.
|Document Type:||Conference or Workshop Item (Paper)|
|Title:||Flow Separation and Side-Loads in Rocket Nozzles|
|Journal or Publication Title:||Fourth International Symposium on Liquid Space Propulsion - Scientific Progress in the Service of Space Access at the Beginning of the Third Millennium -|
|Event Title:||4th International Symposium on Space Propulsion, Heilbronn, March 13-15, 2000|
|Organizer:||Deutsches Zentrum für Luft- und Raumfahrt (DLR), Raumfahrtantriebe, Lampoldshausen|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W RP - Raumtransport|
|DLR - Research area:||Space|
|DLR - Program:||W RP - Raumtransport|
|DLR - Research theme (Project):||E -- no assignement|
|Institutes and Institutions:||Institute of Space Propulsion|
|Deposited By:||elib DLR-Beauftragter|
|Deposited On:||16 Sep 2005|
|Last Modified:||06 Jan 2010 13:50|
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