## Investigation of New Radar-data-reduction Techniques Used to Determine Drag Characteristics of a Free-flight Vehicle |

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acceleration accelerometer aerodynamic force coefficient aircraft altitude angles of attack APPENDIX assumption component compute Coriolis forces Crp versus CSA-RADFAST method cubic equations defined in equation drag coefficient drag curve drag force drag rise drag variation Earth-centered Earth-relative velocity equation A1 fair the plot filtering flight path flight test flight vehicle flight-path angle flight-vehicle origin relative free-stream velocity Geocentric latitude Geocentric radius vector geodetic axis system geodetic latitude geodetic radius vector hand fair hand-calculation method horizontal plane inertial axis system instrumented model KAPPA kinematic equations Langley Research Center m/sec Mach number meteorological measurement systems NASA preflight trajectory design radar flight data RADFAST radiosonde rate of change read slopes sea level second derivatives series of free-flight six-degree-of-freedom small angles speed of sound total aerodynamic force transformation matrix defined transonic drag characteristics variation of drag various axis systems vehicle with respect versus M curve Wallops FPQ-6 radar white noise wind shears wind velocity