I'm L2 certified here in the UK so have been flying AT motors and using Rocksim to simulation each flight, mainly on dual deploy rockets.
I also use eggtimers and eggfinders with redundancy and each flight, the flight computers are recording accurately the same altitude etc but the Rocksim simulations have always over predicted altitude somewhere between 400 and 600 ft. I fully understand why this may happen when flying but wanated to try and understand why this is happeneing.
Whilst checking the engine data for the AT J350 I noticed that the burn time was listed as 1.9 seconds but thrustcurve and the AT Matrix show 1.5 second burn. Also the peak thrust was way out which could explain why the sims are incorrect. I contacted Apogee who explained that the new version 11 software is updated from thrustcurve periodically however the data file in thrustcurve for this motor appears to have been uploaded a while back.
I also checked the AT I211 and Engedit states 2.2 second burn whilst thrustcurve states 1.7, this has also been reported to Apogee so it made me think, how many more motors in Rocksim do not have the correct data.
My question is, has anyone else had these issues and how did you edit the Engedit data files. I have tried selecting the nodes on the curves at the bottom of the screen but this isn't accurate enough and you can't edit the number in the Peak Thrust and Burn time boxes.
I also use eggtimers and eggfinders with redundancy and each flight, the flight computers are recording accurately the same altitude etc but the Rocksim simulations have always over predicted altitude somewhere between 400 and 600 ft. I fully understand why this may happen when flying but wanated to try and understand why this is happeneing.
Whilst checking the engine data for the AT J350 I noticed that the burn time was listed as 1.9 seconds but thrustcurve and the AT Matrix show 1.5 second burn. Also the peak thrust was way out which could explain why the sims are incorrect. I contacted Apogee who explained that the new version 11 software is updated from thrustcurve periodically however the data file in thrustcurve for this motor appears to have been uploaded a while back.
I also checked the AT I211 and Engedit states 2.2 second burn whilst thrustcurve states 1.7, this has also been reported to Apogee so it made me think, how many more motors in Rocksim do not have the correct data.
My question is, has anyone else had these issues and how did you edit the Engedit data files. I have tried selecting the nodes on the curves at the bottom of the screen but this isn't accurate enough and you can't edit the number in the Peak Thrust and Burn time boxes.
