The dual-bell nozzle is an altitude adaptive nozzle concept that offers two operation modes. In the framework of the German Research Foundation Special Research Field SFB TRR40, the last twelve years have been dedicated to study the dual-bell nozzle characteristics, both experimentally and numerically. The obtained understanding on nozzle contour and inflection design, transition behavior and transition prediction enabled various follow-ups like a wind tunnel study on the dual-bell wake flow, a shock generator study on a film cooled wall inflection or, in higher scale, the hot firing test of a thrust chamber featuring a film cooled dual-bell nozzle. A parametrical system study revealed the influence of the nozzle geometry on the flow behavior and the resulting launcher performance increase.
Dual-Bell Nozzle Design
Notes Numerical Fluid Mech.
Future Space-Transport-System Components under High Thermal and Mechanical Loads ; Chapter : 25 ; 395-406
2020-10-27
12 pages
Article/Chapter (Book)
Electronic Resource
English
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