Performance of Two-Stage Turbosupercharger Using Mixed-Flow Impellers
Abstract
The NACA has investigated the performance of a two-stage turbosupercharger incorporating mixed-flow impellers. Two complete superchargers were tested, the second being the same as the first except for modified vanes in the interstage passage and a somewhat different first-stage diffuser shape. At the maximum pressure ratio of 2.91 the peak efficiency of the modified supercharger was 78% at a corrected volume flow of 115 cubic feet per second. The modified supercharger had a maximum efficiency of slightly above 82%, an increase of 3 points above that of the original compressor. At the highest common pressure ratio of 2.6, the modified supercharger reached a peak efficiency of 80% and the original supercharger, 74%. The characteristic curves of both units were fairly flat, which indicated good performance for a wide range of speeds and air flows.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1942
- Accession Number
- ADA801307
Entities
People
- Julia A. King
- Oscar W. Schey
Organizations
- Glenn Research Center