In AP Physics B, for our physics olympics, for one event, we are required to make a paper rocket that will be launched straight up in the air by an air compressor and pump. (60 psi) We have already assembled the paper rocket, with one cylinder of paper, a cone paper nose, and a load of tape to ensure the top doesn't burst on launch. My teacher warned that the winners and the losers always have parachutes, because either you nail it or you don't. (Parachute might deploy too early, too late, etc...) How can I deploy a parachute when the rocket is at its peak point? We have paper, string, plastic bags, and pretty much anything we can get our hands on. Thank you, any help is very welcome.