22nd Congress of International Council of the Aeronautical Sciences, Harrogate, UK, 28 August - 1st September, 2000
Paper ICAS 2000-2.3.1

NUMERICAL TOOL FOR SPECIFIC FLIGHT REGIMES

N. V. Voevodenko
TsAGI, Russia

Keywords: numerical code, hypersonic disturbance theory

A possibility to use the numerical code, based on the hypersonic small-disturbance theory, for the studies of some special flight regimes is considered. A numerical method based on the hypersonic small-disturbance theory, the highincidence slender-body Sychev's theory and Godunov's method have been used to calculate the aerodynamic characteristics of two hypersonic configurations: first-stage Pegasus XL air-launched space booster and X-34 hypersonic research vehicle, at the extreme flight conditions: 2 = M8 = 9 and a = 0 ÷ 360°. Such flight conditions arise during deep-stall flight. A variety of methods are necessary to obtain the data in the whole flight range at such regimes. It is shown that this numerical method is a tool, which covers the biggest part of aerodynamic matrix necessary for such kinds of flight. Method is reliably tested. A comparison of these method results with the experimental data and other methods results shows the reasonable coincidence.

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