Accession Number:

ADA073594

Title:

Estimates for Hydraulic Efficiency and Blade Characteristics for Preliminary Pumpjet Design Exercise.

Descriptive Note:

Technical memo.,

Corporate Author:

PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB

Personal Author(s):

Report Date:

1979-05-03

Pagination or Media Count:

65.0

Abstract:

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 a preswirl pumpjet which has a stator forward of the rotor. The approach uses mass averaged values of flow quantities to detemrine 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. Author

Subject Categories:

  • Marine Engineering
  • Pumps, Filters, Pipes, Tubing, Fittings and Valves

Distribution Statement:

APPROVED FOR PUBLIC RELEASE