problem

When using the engines given by our rocket open rocket, there is no problem in the parachute system. Since we are given a different engine in the competition we will enter, we upload its file. When we simulate it acts like a parachute is not added. What do we have to do? Please help me.

Hello, me and my team are preparing for a rocket competition. We were given 2 engine options for us to use in our rocket. First choice is M2150 and second choice is M2020. We have to draw rockets in for 2 options. No problem for M2150. But the dimensions of the M2020 are incorrectly given in...

I am currently in the middle of designing a rocket in OpenRocket that uses duel deployment. I was thinking about maybe using a streamer instead of a drogue chute. However, it seems to be acting weird when I put the streamer in. For example, if I don't put any recovery devices in the rocket at...