On Wednesday 22 Jun 2005 1:35 am IST, Jeff McBride wrote:

JM> Kitts,
JM> 
JM> Your idea is an interesting one, and I would be interested is hearing 
JM> about anything that comes of it.

Thanks. Much has been done on the onboard side of this project. Soon i will 
have to concentrate on the Ground Control part of it which is the challenge 
for me. I need to gather a good understanding of the internals of 
FlightGear and improve my programming skills in C++. I just know that it is 
logically possible to do what i have in mind and set forth to do it.

JM> I am working on a UAV project at Virginia Commonwealth University where 
JM> we have made use of FlightGear for test purposes to fly our plane, 
JM> hardware in the loop, on the simulator. Essentially, we wrote an 
JM> application that would forward control positions from the on-board 
JM> flight control system received in telemetry  into flight gear, and we 
JM> would use the position and velocity data from the flight gear FDM to 
JM> generate "fake" GPS reports that we sent to the plane in place of the 
JM> GPS receiver.

How well does this work considering that real world weather conditions are 
very different from those in the simulator? Control surface responses are 
never similar?

JM> I did consider using Flight Gear as a feed back tool while we were 
JM> actually in flight, but we didn't really have the time or the right 
JM> sensor information. We are using the same Co-Pilot system Curtis is 
JM> using in his project and GPS for navigation, so we don't have any real 
JM> attitude (pitch, roll, yaw) information, and we only get position and 
JM> velocity updates once per second. We are working towards a system with 
JM> rate gyros and barometric altitude/airspeed sensors, and may consider 
JM> integrating flight gear further with our ground control station.
JM> 
JM> I do intend to create a website and publish a couple of papers about the 
JM> project, but I am waiting until after the competition we are preparing 
JM> for (in 2 weeks) before doing so. I will drop a note on the list about 
JM> it when it is available in case anyone wants to take a look.

I, for one, would sure like to look at it. Looking at others work can spark 
new ideas and put them into perspective...

-- 
Cheers!
Kitts


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