b737 flight deck-noise_reduction
DESCRIPTION
B737 flight deck-noise_reductionTRANSCRIPT
737.1
Flight Deck Noise Reduction
Flight Deck Noise Reduction
Capt. Ray CraigAirplane Validation & Flight Operations
Boeing Commercial AirplanesMay 2004
Capt. Ray CraigAirplane Validation & Flight Operations
Boeing Commercial AirplanesMay 2004
737.2The Boeing Company
737 NG Flight Deck Investigation737 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
737.3The Boeing Company
737 NG Test History737 NG Test HistoryFebruary 2001 flight test
– Noise source investigation at various speeds and altitudesJune 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
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
737.4The Boeing Company
737 NG Flight Deck Component Sources737 NG Flight Deck Component Sources
737.5The Boeing Company
737 NG PRR Package737 NG PRR Package
737.6The Boeing Company
737 NG PRR Package737 NG PRR Package
737.7The Boeing Company
Estimated Flight Deck ImprovementsEstimated Flight Deck Improvements• 35,000 ft , Cruise Mach 0.78 IMN• 35,000 ft , Cruise Mach 0.78 IMN
737.8The Boeing Company
PRR SchedulePRR 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)
• 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)