A modeling technique for STOVL ejector and volume dynamicsNew models for thrust augmenting ejector performance prediction and feeder duct dynamic analysis are presented and applied to a proposed Short Take Off and Vertical Landing (STOVL) aircraft configuration. Central to the analysis is the nontraditional treatment of the time-dependent volume integrals in the otherwise conventional control-volume approach. In the case of the thrust augmenting ejector, the analysis required a new relationship for transfer of kinetic energy from the primary flow to the secondary flow. Extraction of the required empirical corrections from current steady-state experimental data is discussed; a possible approach for modeling insight through Computational Fluid Dynamics (CFD) is presented.
Document ID
19900055113
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Drummond, C. K. (NASA Lewis Research Center Cleveland, OH, United States)
Barankiewicz, W. S. (NASA Lewis Research Center Cleveland, OH, United States)