Since I promised Randall some "real" numbers, and I see some others might be interested I'll put them here. Enjoy!
Also, a correction: I posted earlier that a cone should be in the .06-.09 range. Well, that is true, without base drag. But we can't really just wish away base drag (though a plume would help!). Some numbers for Cd of cones, including transonic/supersonic effects: Cone h=8 b=2 (dia.) Speed(m/s) Mach Cd 10 0.03 .183 20 0.06 .179 40 0.12 .178 60 0.18 .179 80 0.24 .180 100 0.30 .180 120 0.36 .181 140 0.42 .182 160 0.48 .183 180 0.54 .183 200 0.60 .184 220 0.66 .184 240 0.72 .185 260 0.78 .185 266 0.80 .185 <----Transonic boundary 280 0.84 .186 300 0.90 .191 320 0.96 .200 332 1.00 .206 <----Sonic 340 1.02 .211 349 1.05 .217 <----Maxima 360 1.08 .214 380 1.14 .210 400 1.20 .207 420 1.27 .204 440 1.33 .203 460 1.39 .202 480 1.45 .201 500 1.51 .201 <----slope change to level 520 1.57 .201 I only have numbers up to Mach 2.0 for the cone. _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
