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 July 23, 2014

News: Israel’s Iron Dome defense in line for tripled U.S. spending - Israel’s iron Dome missile defense system may end up getting triple the U.S. funding that the Defense Department sought for it in March. Ukraine asked U.S. for systems to counter Russian missiles - A month before the United States says a Russian missile likely brought...
 
 

News Briefs July 23, 2014

U.S. military deaths in Afghanistan at 2,194 As of July 22, 2014, at least 2,194 members of the U.S. military had died in Afghanistan as a result of the U.S.-led invasion of Afghanistan in late 2001, according to an Associated Press count. The AP count is three less than the Defense Department’s tally. At least...
 
 
Raytheon photograph

Raytheon completes key Air, Missile Defense Radar reviews

Raytheon photograph Partially-populated, full-sized Air and Missile Defense Radar array. Raytheon has completed two critical program reviews for the new Air and Missile Defense Radar, the U.S. Navy’s next generation integ...
 

 
Insitu photograph

Insitu demonstrates long endurance capabilities of Integrator unmanned aircraft

Insitu photograph Insitu’s Integrator unmanned aircraft recovers via SkyHook; the aircraft recently completed a 24-hour endurance flight. Insitu announced July 22 the successful 24-hour flight of its Integrator unmanned a...
 
 

NASA partners punctuate summer with spacecraft development advances

Spacecraft and rocket development is on pace this summer for NASA’s aerospace industry partners for the agency’s Commercial Crew Program as they progress through systems testing, review boards and quarterly sessions under their† Space Act Agreements with the agency. NASA engineers and specialists continue their review of the progress as the agency and partners move...
 
 

U.S. Navy selects Northrop Grumman for ship self-defense system

The U.S. Navy has awarded Northrop Grumman a $12 million task order for a full range of engineering services to continue modernizing the Ship Self-Defense System Mark 2. The contract has a potential value of $61 million over five years, if all options are exercised. SSDS MK2 is a combat system designed for anti-air defense...
 




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>