Hi guys. I was wondering how you determine the size and volume of the pressure tank. I was gonna use a tennis ball and unleash it a 75-80 mph but i have no idea on how much the volume should be. I have 3/4 inches of solenoid. Hope you guys can help

I am doing a school project regarding a pneumatic cannon which able to shoot baseballs. Unfortunately, i could not find any starting calculations to it. My teacher asked me to do the calculations looking at Bernouli's equation but other than that , he is not helping much. Can you guys help ? Thank y...