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 July 2, 2015

Freedom Fest Freedom Fest is 4:30-9:30 p.m., July 4 at Wings and Roberts Fields. Event highlights include fireworks, Euro Bungee, 25-foot tidal wave water slide, eight pony carousel, balloon artists, 25′ gondola ferris wheel, Rockin’ Tubs Ride, double swing chair ride, Timberland Wrecking Ball, inflatable Slip & Slide and laser tag. All rides and entertainment...
 
 
Air Force photograph by Jet Fabara

AFMC commander talks resilience, future of command

Air Force photograph by Jet Fabara Gen. Ellen M. Pawlikowski, Air Force Materiel Command commander, addresses Team Edwards during a commander’s call in the base theater June 19. Pawlikowski offered insight into the Air Fo...
 
 
Air Force photograph by Rebecca Amber

Seminar provides expert advice for smart home buying

Air Force photograph by Rebecca Amber The Housing Management Office offered a free Home Buyer’s Seminar June 17, at the Airman and Family Readiness Center. Whether you are a first-time home buyer or looking to purchase an inv...
 

 
airmans-attic

Airman’s Attic gets computer, printer courtesy of Civ-Mil

  Base volunteers at the Airman’s Attic meet with John Fergione (center), former test pilot and president of the Edwards AFB Civilian-Military Support Group. He dropped by June 25 to present a couple donations on be...
 
 
vandals3

Minors confess to causing $22,000 in damage during vandalism spree

Air Force photograph by Ethan Wagner After weeks of investigative work, two minors confessed June 8 to committing vandalism at Desert High School and nearby school district maintenance buildings. From the end of April through m...
 
 

NASA’S American Eatery – Menu

NASA’S American Eatery (Bldg. 4825) July 6–10 10:30 a.m.-1 p.m. Monday Lasagna Side salad and garlic bread Tuesday Country fried steak Mashed potato with gravy Vegetables Wednesday Taco salad Beef or turkey Thursday Kung pao Fried rice and egg roll Friday Baked cod Rice pilaf and vegetables All Blue Plate Specials–$7.89 Drink not included. Medium...
 




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=""> <s> <strike> <strong>