BDB
Absent Minded Professor
- Joined
- Aug 22, 2015
- Messages
- 2,556
- Reaction score
- 939
I'm a big fan of OpenRocket, and I was excited about the new release because I'm working on a project that involves booster pods. But after upgrading to the newest version of OpenRocket, my simulations have been embarrassingly bad. I have also been flying two new rockets, so I don't have apples-to-apples comparisons, but I'd appreciate some help sorting this out.
I'm attaching a .ork file of an extended Wildman Punisher I have flown twice this year--once on a Loki J474 and once on a CTI K530. Both flights overperformed by large amounts, with nearly disastrous consequences. Before this year, my sims were much more in line with actual flight data. If anything, my flights often underperformed the sims. Now, the exact opposite is true.
Motor: Loki J474
OR Sim: 2115 ft
Actual: 2986 ft
Motor: CTI K530
OR Sim: 5529 ft
Thrusctcurve prediction: 5780 ft
Actual: 8363 ft!!!!
After the first flight, I suspected that something was off, so I double-checked with Thrustcurve for the second flight. The second time, the overperformance was even worse.
The consequences of not getting this right are huge. I nearly unintentionally violated the club's waiver!!!
I hope this is an isolated problem, but please tell me if others are experiencing something similar.
I'm attaching a .ork file of an extended Wildman Punisher I have flown twice this year--once on a Loki J474 and once on a CTI K530. Both flights overperformed by large amounts, with nearly disastrous consequences. Before this year, my sims were much more in line with actual flight data. If anything, my flights often underperformed the sims. Now, the exact opposite is true.
Motor: Loki J474
OR Sim: 2115 ft
Actual: 2986 ft
Motor: CTI K530
OR Sim: 5529 ft
Thrusctcurve prediction: 5780 ft
Actual: 8363 ft!!!!
After the first flight, I suspected that something was off, so I double-checked with Thrustcurve for the second flight. The second time, the overperformance was even worse.
The consequences of not getting this right are huge. I nearly unintentionally violated the club's waiver!!!
I hope this is an isolated problem, but please tell me if others are experiencing something similar.