This article is cited in 1 paper

Chemical reactions of fuel combustion and nitrous-oxide decomposition used to generate and heat the test gas in a high-enthalpy short-duration facility

V. V. Shumsky

Siberian Division, Russian Academy of Sciences, Institute of Theoretical and Applied Mechanics, Novosibirsk, 630090

Abstract: Operation of a short-duration high-enthalpy facility with a double plenum chamber with reproduction of natural values of stagnation pressure and physical stagnation enthalpy in the incoming flow is studied. The test gas is heated by burning the following compositions in the first chamber: hydrogen or propane (three-component initial mixture: fuel + air + compensating oxygen) or a combination of these fuels with nitrous oxide (four-component initial mixture: fuel + nitrous oxide + air + compensating oxygen or compensating nitrogen). For all fuels, the composition of the initial mixture pumped into the first chamber ensures generation of a flow with the mass fraction of oxygen equal to the mass fraction of oxygen in atmospheric air $(0.231)$. Computations are performed for the range of Mach numbers $\mathrm{M}_{\mathrm{H}}= 4-7$ and a flight trajectory with a dynamic pressure of $\approx0.6$ bar.

Keywords: high-enthalpy facility, natural flight parameters, plenum chamber, chemical heating, hydrogen, propane, nitrous oxide.

UDC: 629.7.036.2+533.607

Received: 23.07.2002

 English version: Combustion, Explosion and Shock Waves, 2003, 39:3, 285–291

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