A Numerical Study of Marquardt's Ejector-Scramjet Test Engine

Han, S. M.; Tomes, Jeremy

doi:10.2514/6.2002-3606

Cited by 3 publications

(1 citation statement)

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“…There has been extensive extension by numerous authors of the quasi 1-D methods though most apply to circular and axisymmetric cases. Some examples of other quasi 1-D analysis are provided by Emanuel [23] who compares Fabri's analysis to other 1-D models, Huang [24] who validates against experiment a quasi 1-D approach to predicting entrainment performance when the primary flow is choked and the secondary flow reaches a critical choking condition, Han [25] investigates the effects of molecular weight with respect to the quasi-one dimensional model, and Del Valle [26] approaches Huang's analysis by generating the primary flow characteristics based on perturbation theory.…”

Section: Ejectorsmentioning

confidence: 99%

Numerical Investigation of a Novel RBCC Ejector Configuration Compared to a Traditional Circular Ejector

Gerber¹

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The rocket based combined cycle can be an alternative engine to power a vehicle into space. The engine has 4 stages and one of the more challenging stages to increase performance is the first stage, the ejector stage. One proposed method to increase performance is by achieving higher entrainment performance and mixing at low free-stream velocities. The Exchange Inlet is used as an alternative nozzle to achieve this performance. The Exchange Inlet is compared to a conical nozzle within a RBCC engine with computational fluid dynamics at various pressures. The mixing and entrainment properties are compared between the two engine configurations and additional cases are investigated with shorter mixing sections to further investigate these properties. The Exchange Inlet is found to have better entrainment than the circular nozzle in all cases.

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Section: Ejectorsmentioning

confidence: 99%