<?xml version="1.0"?> <FG_NOZZLE NAME="X-15 XLR-99 Nozzle"> <!-- PE = Nozzle exit pressure, psf. EXPR = Nozzle expansion ratio, Ae/At, sqft. NZL_EFF = Nozzle efficiency, 0.0 - 1.0 DIAM = Nozzle diameter, ft. --> PE 40 EXPR 9.8 NZL_EFF 0.67 DIAM 3.2 </FG_NOZZLE>