Space

November 20, 2013

NASA tests space launch system autopilot technology on F/A-18 jet

NASA has completed the first tests with an F/A-18 research jet to evaluate the autonomous flight control system for the agency’s Space Launch System rocket.

The system, called the Adaptive Augmenting Controller, will allow SLS to respond to vehicle and environmental variations such as winds or vehicle flexibility after it blasts off the launch pad and heads toward space. This is the first time a flight control system for a NASA rocket is being designed to adjust autonomously to unexpected conditions during actual flight rather than pre-flight predictions. This ability to make real-time adjustments to the autopilot provides enhanced performance and increased safety for the crew.

The tests were flown Nov. 14-15 out of NASA’s Dryden Flight Research Center at Edwards Air Force Base, Calif. During the flights, more than 40 tests were conducted using SLS-like trajectories. The system was evaluated in different scenarios for up to 70 seconds at a time to match the rocket’s dynamics for the majority of its flight from liftoff to solid rocket booster separation.

“By flying a high-performance F/A-18 jet in a manner similar to our rocket, we’re able to simulate SLS’s flight conditions and improve our software,” said Tannen VanZwieten, SLS flight controls working group lead. “The innovative system that we are testing at Dryden is advancing flight control technology by adding an adaptive element which is new for launch vehicles. We’re using this technology to expand the capabilities of the SLS a bit more than what is possible with a traditional design.”

During the flight, NASA simulated both normal and abnormal flight conditions, such as sloshing propellant, and identified key aircraft vibrational characteristics. The flight test data will be used to refine software for SLS and plans for future F/A-18 flights, which will run through the end of the year.

“This is an example of how advanced rocket technology can be checked out in flight without having to be launched into space,” said John Carter, project manager for the flight tests at Dryden. “Doing this work on the F/A-18 test bed allows for low-cost, quick-schedule tests that can be repeated many times in order to gain confidence in the advanced controls technology, providing some unique testing advantages for this type of control system validation.”

This flight control system will be ready for the first flight test of the SLS, scheduled for 2017. That flight will feature a 70-metric-ton lift capacity configuration and carry an uncrewed Orion spacecraft beyond low-Earth orbit to test the performance of the integrated system. As the SLS evolves, it will provide an unprecedented lift capability of 130-metric-tons to enable missions even farther into our solar system to places such as an asteroid and Mars.




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


 
 

 

Headlines October 20, 2014

News: Navy grounds ‘Top Guns’ - The F/A-18s needs spare parts and in too many cases they’re being taken from brand new jets. This is a risk to national security and pilots’ lives.   Business: Boeing seeks revised schedule for U.S. aerial tanker - Boeing is revising its master schedule for developing the new U.S. Air Force...
 
 

News Briefs October 20, 2014

New military medical team to help with Ebola in U.S. Defense Secretary Chuck Hagel has ordered the military to prepare and train a 30-member medical support team that could provide short-term help to civilian health professionals if there are more Ebola cases in the United States. His spokesman, Rear Adm. John Kirby, says the team...
 
 

Dragon ‘fires up’ for flight

The Air Force and NATO are undergoing a cooperative development effort to upgrade the avionics and cockpit displays of AWACS aircraft belonging to the 552nd Air Control Wing at Tinker Air Force Base, Okla., and the NATO E-3 Sentrys from Geilenkirchen, Germany. The Diminishing Manufacturing Sources Replacement of Avionics for Global Operations and Navigation, otherwise...
 

 
Boeing photographs

Boeing-built X-37B successfully completes third flight

Unmanned spacecraft concludes record-setting 674-day mission   Boeing photograph A third mission of the Boeing-built X-37B Orbital Test Vehicle was completed on Oct. 17, 2014, when it landed and was recovered at Vandenberg...
 
 

Boeing concludes commercial crew space act agreement for CST-100/Atlas V

Boeing has successfully completed the final milestone of its Commercial Crew Integrated Capability Space Act Agreement with NASA. The work and testing completed under the agreement resulted in significant maturation of Boeing’s crew transportation system, including the CST-100 spacecraft and Atlas V rocket. NASA in July approved the Critical Design Review Board milestone for Boeing’...
 
 

AF to release small business research solicitations

The Air Force Small Business Innovation Research and Small Business Technology Transfer program office is set to release its fiscal year 2015 list of topics Oct. 22, on the SBIR/STTR website.  Small businesses and research institutions with expertise to address the topics’ technology challenges are encouraged to submit proposals. During 2014, the Defense Department SBIR...
 




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>