"In the sim everything works well :)
however I'm now buried up to my eyes in the group efforts to improve some of the support libraries which are critical for providing accurate sensing. Of course in the sim we have perfect information. I hope to get…"
"I'm not saying you can't do landing and takeoff and control, at 10hz, and the "something reasonable" I agree you can do: it was my last scenario: just start pitching up at 1m AGL and pray, with some escapes for unexpected events.
I just believe that…"
"A textbook flare is very difficult especially combined with a defined touch down point. You need to change from nose down trimmed condition in a glideslope at a pre-calculated height over ground that coincides with the right distance prior to the…"
"here is a video of the Bixler X-plane model, which cruises very slowly, in wind with turbulence as well. There is no setting in X-plane for wind from a constantly changing direction but its turbulence setting causes variable wind as well as gusts up…"
"(contd) .. rather than lagging a moving target. The effect of this parameter shows up best in loiters: the plant is not being led enough) or loiter inside the circle (it is being led too much). If it is roughly right, t_mode_control does the…"
"A few answers.Regarding wind variability. Since this firmware does not guess the wind and then output a fixed compensation it does not matter if the wind is variable. GPS is providing the position 4 to 10 times a second so the reactions to the…"
"For SITL tests right now all I have is an OSX .elf, so unless you are on Mac I can't post that.
I'll post an APM1 and APM2 .hex file shortly, then upload the code so anyone can pull it down and build it."
"The sharp eyed may notice there was no track following between waypoints 6 and 7
this was not because of wind or anything, but because there was a speed change command between waypoint 6 and 7 this the navigator did not have a "from" bearing on its…"
An update on my project (please see my previous two posts).See http://www.youtube.com/watch?v=lhdR2IesfuwThis is a screencast of APM2 running in HIL mode with the X-plane RC plane in an 8kt wind over a simple course, takeoff, circuit including…
"I don't like the position of the GPS. You want it to be on a high point of a plane, with many planes this will
be difficult. Also any attached cables sprout like a forest around it, providing a screen for a chunk of the sky.
I'll be using my old GPS…"
"On the left is the Arduplane default, the heading hold is done with nose-to-bearing, so it is not accounting for wind. (Not that in this test there was any wind). In addition the heading hold is mixed with cross-track gain to try to get the plane…"