Bottle Rockets Rain or Shine

Unfortunately it was rain and high winds for my physics class. The average class time for our rocket bottles was about four seconds and the minimum time each group needed was five seconds. The average class time for period four was about six seconds, but at the same time they did not have to weather the rain like us. Before my group tested the rocket again we added fins to the bottle.

My group particularly had a hard time dealing with the conditions. Our first launch was about three seconds, probably because our parachute broke. In the rain we fixed the parachute and launched it a second time but once again the parachute broke leaving us with a time of still about three seconds, so we decided that we needed to go back to class and make a new parachute. Before we could launch the rocket bottle for a third time the rain really picked up and class was going to end soon, so we didn't get to the minimum five seconds. The thing that concerns me the most is that we don't know if the fins helped our bottle or not because the variables (weather) was different. One thing that the group knows for our next launch is that we need to change our cone because the cone that we are now using is packing the parachute to tightly.