Tests on High-Reaction Compressor Blading
نویسنده
چکیده
Two sets of blading, designed for 120 per cent reaction, and for flow coefficients of 0" 667 and 1.0 respectively, have been tested in the N.G.T.E. low-speed compressor No. 106. The performances were compared with those of corresponding sets of 50-percent reaction blading and with predictions based on simple theoretical methods. The high-reaction bladings both gave efficiencies which were lower by amounts broadly in line with the predictions. The work-done factors were also appreciably lower. The lower-flow-coefficient blading showed a significant advantage in pressure rise over its 50-percent reaction counterpart, with about the same surge flow, while the high-flow blading was deficient in pressure rise but had a considerably wider surge margin. Both bladings might thus be of value in specialised situations where efficiency is not a prime consideration.
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