Post by Echo on Sept 2, 2020 20:09:13 GMT
Playing around with injectors and turbopumps, it seems that:
which is equal to:
Blade Stress [MPa] = (2.53±0.01)E-07 * Density [kg/m^3] * (Pump Radius [m])^2 * (Rotational Speed [RPM])^2
Blade stress does not seem to depend on the pumped fluid nor the pump's temperature. Does anyone have an idea where that constant comes from? Density times area over time squared gives pressure (same units of measure), so either it comes from pure numbers, or the units of mesure cancel out.