Ultra fast “Scramjets” can be effectively guided by new control system softwareApril 30th, 2009 - 3:33 pm ICT by ANI
Washington, April 30 (ANI): Engineers at the Ohio State University, US, have designed control system software that can effectively guide a hypersonic experimental “scramjet”, which is faster than the speed of sound.
Government agencies have been developing faster-than-sound vehicles for decades.
The latest supersonic combustion ramjets, called scramjets, burn air for fuel, and could one day carry people to space or around the world in a matter of hours.
The recent success of NASA’s X-43 hypersonic jet has spurred research into the control systems for these vehicles, according to Lisa Fiorentini, doctoral student in electrical and computer engineering at Ohio State University.
She and associate professor Andrea Serrani are developing a new control system in collaboration with the US Air Force Research Laboratory (ARFL) at Wright-Patterson Air Force Base in Ohio.
The scientists report that their controller performed flawlessly in computer simulations of flight maneuvers.
The controller both guides the jet along its trajectory and keeps it stable during a flight, Fiorentini explained.
Sensors measure factors such as altitude, velocity, and acceleration, and the controller calculates whether any adjustments need to be made to keep the jet stable and on course.
Then, actuators carry out the controller’s commands - for instance, throttling up the engine if the jet needs to accelerate.
“Because these vehicles are unmanned right now, we have to prepare everything ahead of time - anticipate every possible in-flight event,” Fiorentini said.
“And the controller has to work really fast. At 10 times the speed of sound, if you lose just one second, the jet has gone far, far off course,” she added.
What sets the Ohio State control system apart, Serrani explained, is that it allows for flexibility: it adapts to changing conditions during a flight.
“The truly remarkable feature of our approach is that we consider a realistic, physics-based vehicle model within our stability analysis, using a highly sophisticated controller,” he said.
The technology is still under development in military and commercial sectors.
Scramjets could deliver missiles to mobile targets; they could also carry people halfway around the world in less than an hour. (ANI)
- Researchers control unmanned jet flying faster than sound - Apr 30, 2009
- Unmanned US hypersonic craft fails - Aug 16, 2012
- Pioneering American Jet Demolishes Earlier Hypersonic Flight Record And Establishes A New Record - May 28, 2010
- Hypersonic Plane Fails Mach 6 Attempt - Aug 17, 2012
- India tests advanced sounding rocket successfully - Mar 04, 2010
- Hypersonic jets that fly at five times the speed of sound - Nov 05, 2010
- 'Indian rockets to use atmospheric oxygen as fuel by year-end' - May 29, 2010
- India tests cheaper rocket to reduce launch vehicle cost - Mar 04, 2010
- US Army's 'WaveRider' can fly more than 6 times faster than speed of sound - May 01, 2009
- US jet shatters hypersonic flight record - May 28, 2010
- Soon: 'Hypersonic' passenger jets that travel at 5 times the speed of sound - Nov 05, 2010
- IAF could soon get supersonic BrahMos missile - Oct 24, 2010
- Jet Breaks Hypersonic Record: X 51A Waverider Reaches Mach 6 Speed - May 28, 2010
- Soon, fly from Oz to NYC in 12 mins flat or soar like a bird in see-through craft! - Sep 24, 2010
- India-Russia JV to fund hypersonic missile project - Aug 17, 2011
Tags: computer engineering, computer simulations, control system software, doctoral student, fiorentini, flight event, flight maneuvers, force research laboratory, nasa, ohio state university, remarkable feature, scramjet, scramjets, sound government, supersonic combustion, trajectory, us air force, wright patterson air, wright patterson air force, wright patterson air force base