Business

April 17, 2012

Boeing makes 737 MAX design decisions


Boeing has made a series of design updates to the 737 MAX to further optimize the new-engine variant’s performance.

“The 737 MAX is on-track to deliver substantial fuel-savings to customers starting in 2017,” said Beverly Wyse, vice president and general manager, 737 program. “We’ve made several design decisions that support the performance targets for the MAX and evolve the Next-Generation 737′s design within the scope of the 737 MAX program.”

Those design decisions include:

  • Aft body aerodynamic improvements: The tail cone will be extended and the section above the elevator thickened to improve steadiness of air flow. This eliminates the need for vortex generators on the tail. These improvements will result in less drag, giving the airplane better performance.
  • Engine installation: The new CFM International LEAP-1B engines will be integrated with the wing similar to the aerodynamic lines of the 787 Dreamliner engine with its wing. A new pylon and strut, along with an 8-inch nose gear extension, will maintain similar ground clearance to today’s 737 while accommodating the larger engine fan. The nose gear door design is altered to fit with this revision.
  • Flight control and system updates: The flight controls will include fly-by-wire spoilers, which will save weight by replacing a mechanical system. The MAX also will feature an electronic bleed air system, allowing for increased optimization of the cabin pressurization and ice protection systems, resulting in better fuel burn.

Other minor changes to the airplane include strengthening the main landing gear, wing and fuselage to accommodate the increase in loads due to the larger engines. Boeing will continue to conduct aerodynamic, engine and airplane trade studies as the team works to optimize the design of the airplane by mid-2013.

“We also continue to do work in the wind tunnel to affirm the low- and high-speed performance of the 737 MAX design,” said Michael Teal, chief project engineer and deputy program manager, 737 MAX program. “Based on design work and preliminary testing results, we have even more confidence in our ability to give our customers the fuel savings they need while minimizing the development risk on this program.”

A possible revision to the wing tips on the MAX also is being tested in the wind tunnel to see if this new technology could further benefit the airplane.

“Any new technology incorporated into the MAX design must offer substantial benefit to our customers with minimal risk for the team to pursue it,” said Teal. “On the 737 MAX we are following our disciplined development process and continue to work on an airplane configuration that will provide the most value for our customers.”

Airlines operating the 737 MAX will see a 10-12 percent fuel-burn improvement over today’s most fuel efficient single-aisle airplanes and a 7 percent operating cost per-seat advantage over tomorrow’s competition.

To date, the 737 MAX has more than 1,000 orders and commitments from 16 customers worldwide.




All of this week's top headlines to your email every Friday.


 
 

 
LM-F35-hours

F-35 fleet surpasses 15,000 flying hours

The Lockheed Martin F-35 Lightning II fleet recently surpassed 15,000 flight hours, marking a major milestone for the program.  “Flying 15,000 hours itself demonstrates that the program is maturing, but what I think is e...
 
 

Raytheon awarded first international contract for Paveway IV

Raytheon has received a contract from an international customer for Pavewayô IV precision guided bombs valued at more than $200 million. As part of the sale Raytheon will deliver hundreds of the advanced munitions, which are regarded as the ‘weapon of choice’ for the Royal Air Force. The contract represents the first sale of Pavewayô...
 
 
Northrop Grumman photograph

Northrop Grumman dedicates Aircraft Integration Center of Excellence in Florida

Northrop Grumman photograph Tom Vice, corporate vice president and president, Northrop Grumman Aerospace Systems, addresses the media with, from left, Florida State Sen. John Thrasher, Florida Gov. Rick Scott, U.S. Rep. Ron DeS...
 

 

Lockheed Martin GMLRS alternative warhead logs successful flight test series, shifts to next testing phase

Lockheed Martin successfully conducted the fifth and final Production Qualification Test for the new Guided Multiple Launch Rocket System Alternative Warhead recently at White Sands Missile Range, N.M. During the long-range test, four rockets were fired from a HIMARS launcher and destroyed their respective targets approximately 65 kilometers away. The test is the final milestone...
 
 

Forecast International expects UAV market to rise strongly through next decade

The wars in Iraq and Afghanistan sent unmanned aerial vehicle production to record heights, but with the last U.S. military troops in Afghanistan slated to depart the country this year, the Pentagon’s demand for unmanned air vehicles is slackening. However, while fewer UAVs are expected to roll off the production lines from 2014 to 2023,...
 
 
sikorsky-china

China certifies Sikorsky S-76D™ helicopter

Sikorsky Aircraft Corp. announced April 15 that the Civil Aviation Administration of China has issued a validation type certificate for the S-76D™ aircraft, allowing Sikorsky to begin delivering the commercial helicopter  to...
 




0 Comments


Be the first to comment!


Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>