An unseeded air MHD accelerator concept for high Mach number hypersonic propulsion testing

Simmons, G. A.; Nelson, Gordon L.; Hiers, Robert S.; Western, Arthurb.

doi:10.2514/6.1989-2535

Cited by 6 publications

(2 citation statements)

References 17 publications

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“…The current interest in introducing Magnetohydrodynamic terms in the governing equations is two-fold. (1) MHD may be used as an auxiliary propulsive device in a dual mode propulsion system, (Hill and Peterson [9]) and (2) it has been of contemporary interest to investigate the effectiveness of MHD augmented ionized nonequilibrium flow to boost the test ranges of a ground based hypersonic facility (Simmons et al [10] and Adamovich and Rich [11]). While a flow field may be accelerated by means of MHD by seeding with an easily ionizable species, the possibility of obtaining MHD acceleration based on the increased levels of nonequilibrium ionization in an unseeded flow is very intriguing.…”

Section: Introductionmentioning

confidence: 99%

Computation of unsteady nonequilibrium propulsive flowfields

Munipalli

Anderson

Wilson³

1997

33rd Joint Propulsion Conference and Exhibit

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This paper describes a scheme to numerically predict hypersonic flow fields with emphasis on temporal and nonequilibrium effects in two dimensions. The gas model allows for chemical and thermal nonequilibrium. Finite rate chemistry is used to simulate several possible reactions among 11 chemical species present in air. A two temperature model is employed to simulate the thermal nonequilibrium effects, a vibrational-electronic temperature and a rotationaltranslational temperature being the two temperatures used. The intended applications of this code include the simulation of partially ionized high temperature flow fields including magnetohydrodynamic (MHD) effects. To that end, the formulation includes provisions for MHD terms, which are treated as source terms in the flow equations.

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Section: Introductionmentioning

confidence: 99%

Computation of unsteady nonequilibrium propulsive flowfields

Munipalli

Anderson

Wilson³

1997

33rd Joint Propulsion Conference and Exhibit

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“…Furthermore, the development of novel ionization concepts such as the use of high-energy microwave or electron beams may provide an attractive alternative to the use of alkali metal seeding for attaining the requisite electrical conductivity. 6 ' 7 Prior experience with these schemes is also at relatively low pressure, and their feasibility at high pressure will require experimental validation.…”

Section: Introductionmentioning

confidence: 99%

Development of a high-pressure detonation-driven shock tube facility

Wilson

Stuessy

et al. 1996

34th Aerospace Sciences Meeting and Exhibit

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AIAA 34th Aerospace Sciences Meeting and Exhibit, Reno, NV Jan 15-18, 1996The Hypersonic Shock Tunnel at The University of Texas at Arlington is being converted from a pressure-driven to a detonation-driven shock tunnel. This modification was necessitated by a requirement to provide a high pressure/temperature test environment for research to support the development of MHD-augmented hypersonic test facility concepts. A description of the existing shock tunnel, review of the detonation-driven shock tunnel concept, predicted performance of the detonation-driven shock tunnel, and results from an experimental simulation of the tunnel operation, are provided. AbstractThe Hypersonic Shock Tunnel at The University of Texas at Arlington (UTA) is being converted from a pressure-driven to a detonation-driven shock tunnel. This modification was necessitated by a requirement to provide a highpressure, high-temperature test environment for research to support the development of MHDaugmented, hypersonic test facility concepts. A description of the existing shock tunnel, review of the detonation-driven shock tunnel concept, predicted performance of the detonation-driven shock tunnel, and results from an experimental simulation of the tunnel operation are provided in this paper.

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