Tech

November 15, 2013

NASA, Boeing finish tests of 757 vertical tail with advanced technology

NASA’s Ames Research Center hosts the world’s largest wind tunnel, where testing was recently completed on a full-scale Boeing 757 vertical tail.

NASA’s Ames Research Center and NASA’s Langley Research Center, in partnership with Boeing, have completed wind tunnel testing of a full-scale Boeing 757 vertical tail model equipped with active flow control technology.

A major objective of the tests was to show active flow control can enhance the performance of a vertical tail enough to enable future designers to reduce the size of the structure for a whole family of airplanes. That could reduce the penalties related to the vertical tail that aircraft currently pay in drag and weight.

The testing, which began in early September and concluded Nov. 4, took place at the U.S. Air Force’s Arnold Engineering Development Center’s 40- by 80-foot wind tunnel at Ames in Moffett Field, Calif.

“This test campaign is a key component of NASA’s Environmentally Responsible Aviation Project,” said project manager Fay Collier. “The maturation of technologies such as active flow control, which will benefit aviation by improving fuel efficiency, reducing emissions and noise levels, is what NASA’s aeronautics research is all about. The promising results of these wind tunnel tests and the following flight demonstration in 2015 undoubtedly will have an impact on future “green” aircraft designs,” said Collier.

The flow control on the 757 vertical tail model comes from sweeping jet actuators, which are devices that essentially blow air in a sweeping motion along the span of the tail. NASA provided the actuators as part of a collaborative agreement under its Environmentally Responsible Aviation Project.

“NASA is proud to be a part of the research to advance this technology,” said Thomas Edwards, director of aeronautics at Ames. “The tests were successful and the technology is now ready to move forward to benefit the traveling public.”

The test vertical tail is an actual 757 vertical tail that came out of an aircraft bone yard in Arizona. With the help of the Boeing test and evaluation team, Advanced Technologies Inc. of Newport News, Va., modified and refurbished the tail into a wind tunnel model.

The wind tunnel tests enabled the Boeing and NASA team to observe “a wide array of flow control configurations across the whole low-speed flight envelope of the vertical tail,” said Ed Whalen, Boeing Research & Technology program manager for the testing. The team will pick the most efficient and effective flow control configuration for future flight testing “to see how it performs in the real flight environment,” Whalen said.

The flight testing will be aboard the Boeing ecoDemonstrator program 757 flight test aircraft. Boeing’s ecoDemonstrator program will focus on improving environmental performance by bringing new technologies, materials and methods to implementation faster than ever before.

The combined wind tunnel and flight tests will represent the first full-scale flight demonstration of this active flow control technology, Whalen said. “That will give us insight into how the system works, how effective and efficient it is, things that we’re not completely sure of at this point.”

Active flow control involves the manipulation of a flow field – through the addition of energy — to improve the aerodynamic performance of an aircraft structure. Active flow control can enable the design of simpler, smaller and more aerodynamically efficient structures that help reduce aircraft weight, drag, and fuel consumption.




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


 
 

 

Headlines August 28, 2014

News: After F-15 jet crash in Virginia, rescue helicopters search for pilot - Helicopters are searching for an Air National Guard pilot after his F-15 jet crashed in the mountains of Virginia this morning, military officials said.   Business: U.S. Air Force 3DELRR contract expected soon - The U.S. Air Force could award the contract for its...
 
 

News Briefs August 28, 2014

Russian directing new offensive in Ukraine The Obama administration believes Russia is leading a new military counteroffensive in Ukraine. U.S. State Department spokeswoman Jen Psaki says Russia has sent additional columns of tanks and armored vehicles into its neighbor’s territory. She says the incursions suggest a ìRussian-directed counteroffensive is likely underway in the contested e...
 
 
LM-C5

Double Deuce

A U.S. Air Force crew ferried the 22nd C-5M Super Galaxy from the Lockheed Martin facilities in Marietta, Ga., Aug. 25. Aircraft 86-0011 was ferried by a crew led by Maj. Gen. Dwyer L. Dennis, Director, Global Reach Programs, O...
 

 
Northrop Grumman photograph

First ever RQ-4 Global Hawk hits 100th flight on NASA mission

Northrop Grumman photograph A historical look at the first Global Hawk (AV1) during its maiden flight over Edwards Air Force Base, Calif., on Feb. 28, 1998. AV1 has made history again with its 100th flight in support of NASA en...
 
 

Northrop Grumman’s CIRCM system completes U.S. Army flight testing

Northrop Grumman’s Common Infrared Countermeasures system recently completed another round of U.S. Army testing by demonstrating its capabilities on a UH-60M Black Hawk helicopter. The flight test was conducted at Redstone Arsenal in Huntsville, Ala., by the Redstone Test Center. The Northrop Grumman CIRCM system was subjected to rigorous conditions over a six-week period, after...
 
 
NASA photograph by David Olive

NASA completes successful battery of tests on composite cryotank

https://www.youtube.com/embed/qkGI6JeNY0E?enablejsapi=1&rel=0 NASA photograph by David Olive One of the largest composite cryotanks ever built recently completed a battery of tests at NASA’s Marshall Space Flight Cen...
 




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>