mach speed

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  1. Designer Fly

    Mach1 Rockets Breaking Records?

    Who is planning a high speed / high altitude flight with one of Mach 1 Rocketry's BT60 Min Diameter Rockets? What is your set up? What (Alt/Speed) are going for?
  2. S

    convergent-divergent nozzle in OpenRocket

    In a compressible flow, when a fluid flows through a convergent nozzle, the fluid increases its speed; But when the fluid arrives at 1 mach speed, the convergent nozzle will desacelerate the fluid, but a divergent nozzle will acelerate the fluid. I would like to know if the software OpenRocket...