Author: National Aeronautics and Space Administration NASA

Publisher:

Published: 2018-11-13

Total Pages: 114

ISBN-13: 9781731260116

The results are presented for the Douglas Aircraft Company system studies related to high speed civil transports (HSCTs). The system studies were conducted to assess the environmental compatibility of a HSCT at a design Mach number of 3.2. Sonic boom minimization, exterior noise, and engine emissions were assessed together with the effect of a laminar flow control (LFC) technology on vehicle gross weight. The general results indicated that (1) achievement of a 90 PLdB sonic boom loudness level goal at Mach 3.2 may not be practical; (2) the high flow engine cycle concept shows promise of achieving the side line FAR Part 36 noise limit but may not achieve the aircraft range design goal of 6,500 nautical miles; (3) the rich burn/quick quench (RB/QQ) combustor concept shows promise for achieving low EINO(sub x) levels when combined with a premixed pilot stage/advanced technology high power stage duct burner in the P and W variable stream control engine (VSCE); and (4) full chord wing LFC has significant performance and economic advantages relative to the turbulent wing baseline. Unspecified Center BOUNDARY LAYER CONTROL; CIVIL AVIATION; ENVIRONMENT EFFECTS; EXHAUST EMISSION; LAMINAR BOUNDARY LAYER; SONIC BOOMS; SUPERSONIC TRANSPORTS; AIRCRAFT FUELS; BOUNDARY LAYER FLOW; COMBUSTION CHAMBERS; COMBUSTION PRODUCTS; ENGINE DESIGN; EXHAUST GASES; HIGH SPEED; NOISE POLLUTION; VARIABLE STREAM CONTROL ENGINES...