Airframe, Integration, and Community Noise Study

Abstract

this report: (a) As mentioned, GASP was modified to include significantly more 1/2 second intervals. (b) The referred mass flow entering the fan was used vice the physical (per the new GASP modifications). (c) All EPNL output from GASP is referenced to 160 knots to appropriately accommodate the airspeed adjustment routine in INM. Combined these modifications only slightly changed the baseline results compared to the data present in the May 31, 1995 Final Report 21-8867 titled, "Definition Of 1992 Technology Noise Levels For Business Jet Aircraft And The Methodology For Assessing Airplane Noise Impact Of Component Noise Reduction Concepts". Figure 44. Noise Power Distance Curves From 1992 Baseline. 62 Figure 45. Noise Power Distance Curves for Noise/Altitude Study. 5.LATERAL ATTENUATION EXPERIMENTS 5.