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AEROSPACE
NASA retires a research workhorse
by Nancy Smith Kilkenny
Cleveland OH (SPX) Jul 12, 2021

NASA Glenn's S-3B Viking has been a workhorse research aircraft for over 16 years and will now be exhibited at the San Diego Air and Space Museum in California in its retirement.

When the U.S. Navy retired its fleet of S-3B Vikings from active duty in 2009, not all of them were grounded. At NASA's Glenn Research Center in Cleveland, one S-3B was being used almost daily as a flight research aircraft. Acquired in 2004 and flown for the next 16 years on a variety of research missions, this S-3B Viking is about to fly off into the sunset and retire at the San Diego Air and Space Museum in California where it will be used to educate the public about its important role in the U.S. Navy and at NASA.

"This is the last S-3B flying today anywhere in the world," says Jim Demers, Glenn's Flight Operations Manager. "It's been a workhorse for NASA, but we just can't source its unique parts anymore."

Originally designed by Lockheed Martin as an anti-submarine warfare aircraft, NASA's S-3B Viking was completely reconfigured in 2006 for flight research purposes. All weapons systems were removed and replaced with civilian avionics, GPS, and satellite communications systems to conduct flight communications research.

One of its major contributions was helping NASA's aeronautical innovators define communications standards that the Federal Aviation Administration (FAA) can apply to the unmanned aircraft systems for safe operation in U.S. airspace.

"This old aircraft has been a huge part of ushering in the future of aviation," says Mike Jarrell, lead of NASA's Command and Control project. "The S-3B has been a perfect match for our research. It has a nice flat bottom where we can mount a variety of antenna; it flies steady and goes low and slow so we can communicate with ground stations."

Jarrell adds that the S-3B has conducted research flights in every terrain in the national airspace including mountains, hills, over water, plains, and deserts. The results of the flight research have given NASA, the FAA, and its commercial partners a path to secure, reliable command-and-control radios used for communication from the ground to unmanned aircraft systems.

The S-3B also flew research flights to monitor algal bloom growth in Lake Erie and develop hyperspectral imaging equipment to provide more accurate data for university scientists studying the problem. The hyperspectral imagers, mounted to the aircraft's underbelly, analyze a wide spectrum of light to identify the types of harmful algal blooms in the water.

"The S-3B gave us the flexibility to fly at different altitudes to image large swaths of Lake Erie and other bodies of water," says Roger Tokars, an elliptical and optics engineer with NASA Glenn. "The other advantage was the aircraft's inertial navigation system that helped us calibrate our equipment for better geo-referencing data."

NASA's communications research in advanced air mobility will continue using a T-34 Mentor aircraft as new standards are developed to recommend to the Federal Aviation Administration.


Related Links
Advanced Air Mobility at NASA
Aerospace News at SpaceMart.com


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AEROSPACE
Testing maintenance and ground processes for future aircraft generations
Hamburg, Germany (SPX) Jul 12, 2021
The air transport industry in Hamburg is preparing for flying with hydrogen. To this end, the starting signal has now been given for the establishment of a new development platform. Over the next two years and with funds provided by the City of Hamburg, the German Aerospace Center (Deutsches Zentrum fur Luft- und Raumfahrt; DLR) together with Lufthansa Technik, the Center for Applied Aeronautical Research (ZAL) and Hamburg Airport will design and test extensive maintenance and ground processes for deali ... read more

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