Force and Heat Transfer Measurements in Hypersonic Free-Jet Flow
Legge, H. (1994) Force and Heat Transfer Measurements in Hypersonic Free-Jet Flow. In: 18th AIAA Aerospace Ground Testing Conference, 20.-23. Juni 1994, Colorado Springs, CO/USA.
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The technique for aerothermodynamic measurements in free-jets is considered in the transition regime between continuum and free molecular flow. The determination of the drag and lift by electromagnetic sting balances, the determination of the total heat transfer on small models (lɧ mm), and the determination of the overall recovery temperature is described. The advantages of a free-jet against a nozzle flow and especially the shortcomings are discussed. These are in particular: flow gradients, freezing effects of the translational degree of freedom and background pressure influences. As an extension of the free-jet technique a system under development isdescribed in which the core of a free-jets is extracted by a skimmer which works in continuum flow. It is possible to produce a shockless free-jet core up to large distances by this device.
|Document Type:||Conference or Workshop Item (Paper)|
|Additional Information:||institution=AIAA, LIDO-Berichtsjahr=1994, pages=9,|
|Title:||Force and Heat Transfer Measurements in Hypersonic Free-Jet Flow|
|Journal or Publication Title:||18th AIAA Aerospace Ground Testing Conference, 20.-23. Juni 1994, Colorado Springs, CO/USA|
|Series Name:||AIAA 94-2633|
|Keywords:||Rarefied flow, free-jets, force mesurements heat transfer measurements, recovery temperature measurements|
|HGF - Research field:||UNSPECIFIED|
|HGF - Program:||Space|
|HGF - Program Themes:||W RP - Raumtransport|
|DLR - Research area:||UNSPECIFIED|
|DLR - Program:||W RP - Raumtransport|
|DLR - Research theme (Project):||UNSPECIFIED|
|Location:||Köln-Porz , Braunschweig , Göttingen|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Institut für Strömungsmechanik > Institut für Experimentelle Strömungsmechanik|
|Deposited By:||elib DLR-Beauftragter|
|Deposited On:||03 Apr 2006|
|Last Modified:||27 Apr 2009 10:08|
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