Acoustic characterisation of a rectangular rocket combustor with LOx/H2 propellants
Hardi, J. and Oschwald, M. and Dally, B. (2011) Acoustic characterisation of a rectangular rocket combustor with LOx/H2 propellants. In: Proceedings of the 4th European Conference for Aerospace Sciences. 4th European Conference for Aerospace Sciences (EUCASS), 4. - 8. Juli 2011, St. Petersburg, Russia.
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High frequency combustion instabilities have plagued the development of liquid propellant rocket engines since their invention. Continuing research efforts aim to understand the mechanisms by which the oscillating combustion chamber pressure of self-sustaining combustion instabilities is driven. To this end a rectangular combustor with acoustic forcing, designated ‘BKH’, was developed to study flame-acoustic interaction under conditions which are representative of real rocket engines. This paper describes the acoustic characterisation of the BKH combustor using high frequency dynamic pressure measurements from the first hot fire tests using liquid oxygen and ambient temperature or cryogenic hydrogen injectants. Analysis of the resulting high frequency pressure measurements shows excellent agreement with the predicted acoustic properties of the system which were calculated using finite element methods.
|Document Type:||Conference or Workshop Item (Speech, Paper)|
|Title:||Acoustic characterisation of a rectangular rocket combustor with LOx/H2 propellants|
|Journal or Publication Title:||Proceedings of the 4th European Conference for Aerospace Sciences|
|Event Title:||4th European Conference for Aerospace Sciences (EUCASS)|
|Event Location:||St. Petersburg, Russia|
|Event Type:||international Conference|
|Event Dates:||4. - 8. Juli 2011|
|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):||W - Antriebsystemtechnik - Schubkammertechnologie und Hochdruckverbrennung (old)|
|Institutes and Institutions:||Institute of Space Propulsion > Raketenantriebe|
|Deposited By:||Michaela Hanke|
|Deposited On:||30 Nov 2011 10:44|
|Last Modified:||30 Nov 2011 10:44|
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