Demonstration of Short Haul Aircraft Aft Noise Reduction Techniques on a Twenty Inch (50.8 cm) Diameter Fan, Volume 3

摘要

Tests of a twenty inch diameter, low tip speed, low pressure ratio fan which investigated aft fan noise reduction techniques are reported. The 1/3 octave band sound data are presented for all the configurations tested. The model data are presented on 17 foot arc and extrapolated to 200 foot sideline.