To optimize the performance of a tube launched rocket system, the mechanism which generates the flow in the annular gap must be accurately modeled during the system design phase. The present program defines the exhaust plume which results when an underexpanded, supersonic steam exhausts into quiescent air. The free plumes of three different nozzle geometrical configurations are compared with theoretical method-of-characteristic solutions. The results are a foundation upon which the tube-launched rocket designer may base decisions regarding the fabrication of hardware which will successfully control the flow in the annular gap. The report also discusses the current attributes and shortcomings of the University's numerical codes and provides a range of empirical data with which to evaluate future developments in the codes and to make assessments of continued rocket system advancements. (Stoehr)
Study of the exhaust plume for highly underexpanded supersonic nozzles exhausting into quiescent air
Untersuchung der Abgasstroemung von unterexpandierten Ultraschallduesen beim Ausstoss in freie Luft
US Government Research Reports ; Jan ; 1-76
1979
76 Seiten
Report
Englisch
Base Flow/Underexpanded Exhaust Plume Interaction in a Supersonic External Flow
British Library Conference Proceedings | 1998
|Base Flow/Underexpanded Exhaust Plume Interaction in a Supersonic External Flow
British Library Conference Proceedings | 1998
|