helping you keep an eye on things...
This page covers technologies used to characterise the performance of Unmanned Aircraft.
Tethered small helicopter test stand
Here is a really inexpensive way in which to ensure your helicopter is correctly set up prior to any flight tests. After crashing helicopters simply because they had not been set up correctly, we used this simple test bed to make sure the helicopter did not rotate, nor veer to any side, as we changed the helicopter blade speed.
When you put all the above parts together, you should end up with an assembly such as the following.
A larger helicopter could be tested in a similar manner, with a rotating table mounted on a small floating barge that is in turn floated on a pond or a lake.
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MIT and Boeing Use Vicon for UAV Studies |
- from http://www.vfxworld.com
Friday 29 December 2006
Vicon's Academy Award-winning motion-capture systems technology is being leveraged for unmanned aerial vehicles (UAVs) studies, an important developing arena in the field of aeronautical engineering.
UAVs are already deployed, to perform a variety of tasks in the place of manned vehicles and planes. Researchers from the Massachusetts Institute of Technology (MIT) and The Boeing Company's Phantom Works advanced research and development group, are using Vicon to examine and demonstrate algorithms needed to sustain and maintain coordinated flights and missions, by an intelligent multi-unit airborne fleet.
Currently, 18 Vicon cameras are providing high-speed, high-resolution motion tracking for the project, which is being conducted with miniature quadrotors in MIT's Aerospace Controls Lab. This indoor flight testbed uses the realtime 3D position and orientation data captured by the Vicon cameras, to help stabilize and control the vehicles, during flight operations
"Here in the lab, we are using Vicon to understand how you can get fully autonomous vehicles to work together and to evaluate what is needed to maintain health and maintenance for these vehicles on coordinated and sustained real-world missions in the field," said Jonathan How, Aeronautics and Astronautics Professor at MIT. "The Vicon system was chosen because the project needs a tracking system that works indoors and provides accurate and detailed measurements, such as altitude and pitch, in realtime."
The realtime performance of the Vicon system has been essential because the 3D capture data is not analyzed later but used literally on the fly. The MIT team says that an extremely important property of the sensor system is that it demonstrates a very high level of robustness.
"Using the Vicon system, we can accurately determine and track the location and orientation of each UAV during multi-vehicle experiments," added Mario Valenti, MIT. The lab also benefits from rapid prototyping using Vicon, with the ability to run many trials from the same setup to try out a variety of technical ideas. "We can fly our aircraft missions as many times as we want -- the sky really is the limit!" Valenti said.
Vicon (www.vicon.com) is the world's largest supplier of precision motion tracking systems, serving customers and CG animation applications in film, visual effects, computer games and broadcast television, as well as engineering and life science industries. Vicon operates in four offices worldwide, including its Los Angeles-based entertainment headquarters, a 26,000 square-foot facility equipped with three performance capture stages for Vicon's service company, House of Moves, as well as 125 Vicon MX40 cameras.
Vicon is the largest holding of OMG plc (Oxford Metrics Group, www.omg3d.com), a group of technology companies that produces image understanding solutions for the entertainment, defense, life science and engineering markets. Other holdings include Emmy Award-winning 2d3 (www.2d3.com) and newly founded Geospatial Vision Ltd.
Vicon's and OMG's global clients include: life science leaders University of Pennsylvania, the VA Hospitals, Shriners Hospitals for Children, Titleist Golf, National Pitching Assoc.; engineering industry leaders Ford, BMW, Airbus, Lockheed, Pratt-Whitney, NASA, Caterpillar, International Truck, and Toyota; and entertainment companies Sony Pictures Imageworks, Sony Computer Ent., Industrial Light & Magic, Sega, Nintendo, UbiSoft, Vivendi, Electronic Arts, Square Enix and many others.
- from http://www.vfxworld.com/?sa=adv&code=3631a5a1&atype=news&id=18774
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