Local

August 10, 2012

Transformed X-48C makes successful first flight

NASA photograph by Carla Thomas
The remotely operated X-48C Blended Wing Body aircraft lifts off Rogers Dry Lake at Edwards Air Force Base, Calif., on its first test flight Aug. 7. The sub-scale technology demonstrator, modified from the prior X-48B configuration, is entering a new flight test phase in a partnership between NASA and Boeing's Phantom Works research and technology division.

The remotely piloted X-48C aircraft successfully flew for the first time on Aug. 7, 2012, at Edwards Air Force Base in California’s Mojave Desert.

The aircraft, designed by the Boeing Co. and built by Cranfield Aerospace Ltd. of the United Kingdom, is flying again in partnership with NASA.

The new X-48C model, which was formerly the X-48B Blended Wing Body aircraft, was modified to evaluate the low-speed stability and control of a low-noise version of a notional, future Hybrid Wing Body (HWB) aircraft design. The HWB design stems from concept studies being conducted by NASA’s Environmentally Responsible Aviation project of future potential aircraft designs 20 years from now.

“We are thrilled to get back in the air to start collecting data in this low-noise configuration,” said Heather Maliska, X-48C project manager at NASA’s Dryden Flight Research Center. “Our dedicated team has worked hard to get the X-48C off the ground for this first flight and we are excited to learn about the stability and control characteristics of this low-noise configuration of the Blended Wing Body.”

Primary changes to the C-model from the B-model, which flew 92 flights at NASA Dryden between 2007 and 2010, were geared to transforming it to an airframe noise-shielding configuration. External modifications included relocating the wingtip winglets inboard next to the engines, effectively turning them into twin tails. The aft deck of the aircraft was also extended about two feet to the rear. Finally, the project team replaced the X-48B’s three 50-pound-thrust jet engines with two 89-pound-thrust engines.

Because handling qualities of the X-48C will be different than those of the X-48B, the project team developed flight control system software modifications, including flight control limiters to keep the airplane flying within a safe flight envelope. This will enable a stronger and safer prototype flight control system suitable for future full-scale commercial hybrid or blended wing aircraft.

“We are very pleased to begin flight tests of the X-48C,” said Mike Kisska, Boeing X-48C project manager. “Working with NASA, we’ve successfully passed another milestone in our work to explore and validate the aerodynamic characteristics and efficiencies of the blended wing body concept.”

Additionally, the upcoming flight experiments with the X-48C will help researchers further develop methods to validate the design’s aerodynamics and control laws, including a goal of reducing aerodynamic drag through engine yaw control tests.

During the planned second block of flight testing this fall, NASA will test engine yaw control software incorporated in the X-48C’s flight computer. This research will use asymmetric engine thrust to create yaw, or nose left or right movements, for trim and for relatively slow maneuvers.

NASA’s Aeronautics Research Mission Directorate and Boeing are funding the X-48 technology demonstration research effort, which supports NASA’s goals of reduced fuel burn, emissions and noise.

The X-48C retains most dimensions of the B-model, with a wingspan just longer than 20 feet, and a weight of about 500 pounds. The aircraft has an estimated top speed of about 140 mph, and a maximum altitude of 10,000 feet.

The Air Force Research Laboratory, Dayton, Ohio, is also a member of the project team.




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


 
 

 

News Briefs February 27, 2015

Library closure The Base Library will be closing early Feb. 28 for an official function. Hours of operation will be 10:30 a.m. to 3 p.m. that day. For more information, call 661-275-2665. Blood drive The next American Red Cross Blood Drive on Edwards AFB is 10 a.m.-4 p.m., March 4 in the Chapel 1 Annex. Both...
 
 
Air Force photograph by Bobbi Zapka

C-12 pilots take to skies at Edwards

Air Force photograph by Bobbi Zapka Edwards AFB is home to the U.S. Air Force C-12 school house. Referred to as a split school house, when an individual is assigned to fly an Air Force C-12 Huron, they spend three weeks in Alab...
 
 
Air Force photograph by Jet Fabara

Pave Hawk team gives test at Edwards a shot

Air Force photograph by Bobbi Zapka An aerial gunner from the Combat Search and Rescue Combined Test Force fires at a canvas target positioned on the Gun Harmonizing Range during a baseline ballistics test held Feb. 11. The obj...
 

 
BHM-bowling1

Bowling for Black History Month

Joe Hendrix, 412th Maintenance Squadron, shows off his bowling skills during the “Beat the Board” 9-Pin, No-Tap Bowling Tournament, sponsored by the 412th Test Wing, Electronic Warfare Booster Club Feb. 23. The thre...
 
 
Air Force photograph by Jet Fabara

Teen Dating Violence Awareness Month

Air Force photograph by Jet Fabara Chaplain (Lt. Col.) Brendon O’Dowd, 412th Test Wing chaplain, speaks to parents and teens during the Elephant in the Room event held at Desert Jr.-Sr. High School Feb. 18. Family Advocac...
 
 

News Briefs February 20, 2015

Base Exchange Food Court closure Due to power issues the Base Exchange Food Court operations will be closed through Feb. 22. Unfortunately, the nature of the damage precludes the BX from providing temporary power. As a reminder, other facilities listed below are open for business with the addition of the two food trucks out front:...
 




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>