Performance of low-pressure-ratio low-tip-speed fan stage with blade tip solidity of 0.65 /

The overall and blade-element performance of a low pressure ratio, low tip speed fan stage is presented over the stable operating range at rotative speeds from 90 to 120 percent of design speed. Stage peak efficiency of 0.927 was obtained at a weight flow of 32.4 kg sec (190.31 kg sec sq m of annulus area) and a pressure ratio of 1.134. The stall margin at design speed and peak efficiency was 15.3 percent."NASA TM X-3341."Performing organization report no.: E-7604."February 1976."Cover title.Includes bibliographical references (p. 20).The overall and blade-element performance of a low pressure ratio, low tip speed fan stage is presented over the stable operating range at rotative speeds from 90 to 120 percent of design speed. Stage peak efficiency of 0.927 was obtained at a weight flow of 32.4 kg sec (190.31 kg sec sq m of annulus area) and a pressure ratio of 1.134. The stall margin at design speed and peak efficiency was 15.3 percent.Performed by Lewis Research Center, Cleveland, OhioMode of access: Internet