A method is given for predicting hydraulic efficiency of a pumpjet as a function of ingested mass flow. This method is presented for a conventional pumpjet which has a stator aft of the rotor and an preswirl pumpjet which has a stator forward of the rotor. The approach uses mass averaged values of flow quantities to determine blade geometries and operating characteristics at a blade radius that is representative of the average energy input of the blade row. The space-to-chord ratio, lift coefficients, stage efficiency, and overall efficiency of the pumpjet is computed for a given vehicle as a function of advance ratio. (Stoehr)
Estimates for hydraulic efficiency and blade characteristics for preliminary pumpjet design exercise
Bedeutung des hydraulischen Wirkungsgrades und der Schaufelkennwerte beim Entwurf von Pumpenstrahlantrieben
US Government Research Reports ; Mai ; 1-65
1979
65 Seiten
Report
Englisch
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