Recent content by Geith

Thanks, that was very helpful. I was able to put the info into Matlab and get some promising data. I was able to use 0.01 second iterations since I am using Matlab. I have posted my code, as well as the data. The almost linear relationship of the volume of water surprised me. I am also...

I understand that the volume is not constant, but I am willing to ignore the presence of the water, and assume that the entire volume of the bottle is occupied by the air, as an approximation. The pressure however will not be constant, it will start at 7 bar and decrease to 1 bar (Atmospheric).

I am working on a project where I have to calculate various results relating to the motion of a water bottle rocket being launched. I am currently stuck on trying to find how long the thrust period of the rocket is. The model for the rocket is as follows: It is a 2L (0.002m3 bottle filled with...