References ^ack, L. H., and Cuffel, R. F., Detection of Oblique Shocks in a Conical Nozzle with a Circular-Arc Throat, AIAA Journal, Vol. 4, No. 12, 1966, pp. 2219-2221. Thornhill, D., and Ness, R., private communication, Lockheed Missile & Space Co., Palo Alto, CA, 1988-1989. Adamson, T. C., and Nichols, J. A., On the Structure of Jets from Highly Underexpanded Nozzles into Still Air, Journal of Aerospace Sciences, Vol. 26, No. 1, 1959, pp. 16-24. Addy, A. L., Dutton, J. C., and Amatucci, V. A., Nonuniform Nozzle Flow Effects on Base Pressure at Supersonic Flight Speeds, AIAA Journal, Vol. 24, No. 7, 1986, pp. 1209-1212. Serra, J., Determination of Internal Gas Flows by a Transient Numerical Technique, AIAA Journal, Vol. 10, No. 5, 1972, pp. 603-611. L6hner, R., Baum, J. D., Loth, E., and Ramamurti, R., A Element Solver for Axisymmetric Compressible Flows, AIAA Paper 89-1794, Buffalo, NY, June, 1989. L6hner, R., Morgan, K., Peraire, J., and Vahdati, M., Finite Element Flux Corrected Transport (FEM-FCT) for the Euler and Navier-Stokes Equations, International Journal of Numerical Methods in Fluids, Vol. 7, No. 10, 1987, pp. 1093-1109. L6hner, R., Morgan, K., and Zienkiewicz, O. C., An Adaptive Element Procedure for High Speed Flows, Computer Methods in Applied Mechanics and Engineering, Vol. 51, No. 1-3, 1985, pp. 441-465. Roe, P. L., Error Estimates for Cell-Vertex Solvers of the Compressible Euler Equation, Institute for Computer Applications in Science and Engineering, Rept. 87-6, Langley, VA, 1987. Oran, E. S., and Boris, J. P., Numerical Simulation of Reactive Flow, Elsevier, New York, 1987. 11 Loth, E. Baum, J. D., and Lohner, R., Formation of Shocks Within Axisymmetric Flows, AIAA Paper 90-1655, Buffalo, NY, June 1990.