"My glider is delta shape, ie elevons; so flaps are not an option. And that first part I want it to descend as fast as possible to get out of the cold.(Lithium Poly and energy consumption of heater). But I also want the GPS to always have…"
Lincoln's Discussions
HIL - simulate drop from 30,000 feet- crazy dive/spin until reach waypoint altitude
Started this discussion. Last reply by Lincoln Oct 29, 2012. 10 Replies 0 Likes
APM 2.5 hardwareAPM 2.65 softwareSteps:1) start FG on the ground via Mission Planner.2) Set plane to Auto3) I restart FG at same location but at 30,000 ft.Results: plane does a tight spiral dive to…Continue
In stabilize mode pitch/elevator does not work
Started this discussion. Last reply by Lincoln May 23, 2012. 22 Replies 0 Likes
Just uploaded latest firmware 2.33, and APM 1.1.73.Have an twinstar II with ardupilot mega and oilpan shield, gps, airspeed, magnatometer.Setup flew last fall perfectly. I added the battery monitor,…Continue
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Lincoln replied to Lincoln's discussion HIL - simulate drop from 30,000 feet- crazy dive/spin until reach waypoint altitudeSøren Kuula replied to Lincoln's discussion HIL - simulate drop from 30,000 feet- crazy dive/spin until reach waypoint altitude"Hi,
Wow that is a really cool flight profile :)
Maybe you could look at the code for automatic flap deployment, reverse an inequality here or there, and turn it into automatic airbrake deployment instead.
So if you let it glide down at low speed,…"
Lincoln replied to Lincoln's discussion HIL - simulate drop from 30,000 feet- crazy dive/spin until reach waypoint altitude"Using a balloon to take it up, trying to get it to fly back. -- kaymont 600g latex high altitude balloon. Trying to get the plane < 400 grams. So it only has enough engine/battery to maintain level and only turns the engine on below…"
Søren Kuula replied to Lincoln's discussion HIL - simulate drop from 30,000 feet- crazy dive/spin until reach waypoint altitude"Hi,
Just curiosity - where can you fly so high, and with what kind of power?
Kind regards
Soren"
Lincoln replied to Lincoln's discussion HIL - simulate drop from 30,000 feet- crazy dive/spin until reach waypoint altitude"Thanks for your comment!
Yeah - I did end up adjusting this part of the code-- I actually extended it to limit the scaler between .005 and .5 when altitude is above 35,000 ft. and greatly magnified the airspeed(8x) and added gps ground speed to the…"
Søren Kuula replied to Lincoln's discussion HIL - simulate drop from 30,000 feet- crazy dive/spin until reach waypoint altitude"Hi,
Yeah a -80 degrees pitch nose-dive is more like an aerobatic meneuver than something a navigation system can do.
Control surfaces have more effect at high speed, and a resonable PID setup for normal speed will probably overreact in a long dive.…"
Lincoln replied to Lincoln's discussion HIL - simulate drop from 30,000 feet- crazy dive/spin until reach waypoint altitude"Ok - so I reset everything I could. Original HIL hex file. Reseting, erasing the board, back to the ArduPlane.param file in the auto test directory.
The key is the min-pitch value -- it makes it goes bonkers for anything larger…"
Larry Grater replied to Lincoln's discussion HIL - simulate drop from 30,000 feet- crazy dive/spin until reach waypoint altitude"The flight was done with APM 2.0 that has the MPU6000 gyros. Gyro limits were set to the default 2000 deg/sec. BTW, I did a quick hack on this today and I don't think I exceeded this rate on the way down. The pitch…"
Lincoln replied to Lincoln's discussion HIL - simulate drop from 30,000 feet- crazy dive/spin until reach waypoint altitude"Yeah - have talked to him. His doesn't do it in the simulation and he is using the older APM hardware and pinned his gyro's.
I'm pretty sure I have a user-error somewhere, probably a configuration setting. Or maybe…"
Greg Fletcher replied to Lincoln's discussion HIL - simulate drop from 30,000 feet- crazy dive/spin until reach waypoint altitude"What you describe sounds pretty much like this flight , not simulated, but real. It was using an APM. The drop happens at 6:45."
Lincoln posted a discussionHIL - simulate drop from 30,000 feet- crazy dive/spin until reach waypoint altitude
APM 2.5 hardwareAPM 2.65 softwareSteps:1) start FG on the ground via Mission Planner.2) Set plane to Auto3) I restart FG at same location but at 30,000 ft.Results: plane does a tight spiral dive to the waypoint altitude, then goes to the waypoint. Ignores Bank max degrees. (it does take into account Pitch Min) And plane oscillates the ailerons rapidly back and forth during the dive.What I expected/wanted: plane to go towards the waypoint at it's minimum pitch(in this case -80 degrees and…See More
Lincoln replied to Thomas Hays's discussion Compiling ardupilot 2.63 in arduino for HIL use."I tried a 3rd computer using the latest 2.65 code and it worked perfectly, no errors. So I imagine I have leftover stuff perhaps in the environment variables or something that is killing it on the other computers.
So my final steps were…"
Lincoln replied to Thomas Hays's discussion Compiling ardupilot 2.63 in arduino for HIL use."Also, I didn't mean to hijack the thread - - I have the same problem as you. When I upload the newly compiled code using arduino's environment the plane doesn't react to RC transmitter or anything. Had to use the…"
Lincoln replied to Thomas Hays's discussion Compiling ardupilot 2.63 in arduino for HIL use."A valid APM_Config.h didn't make any difference. FYI"
Lincoln replied to Thomas Hays's discussion Compiling ardupilot 2.63 in arduino for HIL use."No- mine was a completely new install. Am on Windows 7, 64bit.
1) Fresh, new install of Arduino 1.01
2) Fresh copy of ArduPlane-2.63.zip - unzipped into my D:\ArduPlane-2.63
3) Ran Arduino as administrator.
4) Changed preferences in…"
Lincoln replied to Thomas Hays's discussion Compiling ardupilot 2.63 in arduino for HIL use."Man, I wish I saw that 1.0.1 was fine long ago.
Just downloaded arduino 1.0.1, downloaded the 2.63 zip source. Copied "libraries" from the source to arduino. it did compile and make a hex file. Had a slew of out of range…"
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