Four Shocks Beat One — The Oblique Shock Train in a Supersonic Inlet
·6 min read
At Mach 3 one normal shock recovers 0.3283 of stagnation pressure. Four 8° ramps plus a terminal shock lift that figure to 0.8235.
To Go Supersonic, Widen the Pipe — The De Laval Nozzle and Choking
·6 min read
Area ratio 4 designs to Mach 2.940 and pe/p0 of 0.0298. Gamma 1.4 locks the choked mass-flow factor near 0.5787, and back pressure stays out of it.