TY - RPRT TI - Rocket exhaust plume computer program improvement. Volume 1: Summary: Method of characteristics nozzle and plume programs AU - Ratliff, A. W. AU - Smith, S. D. AU - Penny, N. M. PY - 1972 UR - https://ntrs.nasa.gov/citations/19720011292 ID - 19720011292 ER -