737.1 Flight Deck Noise Reduction Capt. Ray Craig Airplane Validation & Flight Operations Boeing Commercial Airplanes May 2004 The Boeing Company 737.2 737 NG Flight Deck Investigation Vision: Enable a safe, healthy and comfortable cabin environment preferred by airline passengers and crew Goal: Identify appropriate technology for incorporation on an airplane that will improve the cabin environment to: – Promote passengers and crew satisfaction – Advance technology and design practices – Create value for our customers 737 NG Program is committed to making changes that utilize technology reasonably and economically The Boeing Company 737.3 737 NG Test History February 2001 flight test – Noise source investigation at various speeds and altitudes June 2001 flight/ground test – Evaluation of potential cockpit window noise treatments – ECS noise source investigation including forward cabin muffler January 2002 lab test – ECS Flight Deck diffuser testing with plenum May 2003 flight test – Window noise source investigation (gaps around #2 window frame) August 2003 flight test – Evaluate potential use of Vortex Generators (VGs) November, December 2003 lab tests – Flight Deck Muffler and diffuser plenum tests January 2004 ground test, 1st QTR 2004 Flight Test – ECS Ducting changes and prototype muffler (potential prototype diffuser) – Specific vortex configuration flight test Data review – Studied 747 and 737 Classic flight deck noise investigations The Boeing Company 737.4 737 NG Flight Deck Component Sources The Boeing Company 737.5 737 NG PRR Package The Boeing Company 737.6 737 NG PRR Package The Boeing Company 737.7 Estimated Flight Deck Improvements • 35,000 ft , Cruise Mach 0.78 IMN The Boeing Company 737.8 PRR Schedule • PRR Due Proceed February 2004 • Flight Testing Completed April 2004 • Diffuser plenum testing completed with refinements in work. Better than baseline. • Target airplane for in production change by 2nd Qtr 2005 • Specifics will be officially communicated via ACB once PRR has been committed including reason for change, benefits and line number start • Potential for 73dB(A)
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发表于 2010-4-5 01:23:23
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发表于 2010-6-11 00:28:22
