A good rule of thumb is that your rocket should hit the ground at 15 feet per second. A well built rocket could withstand as much as 20 feet per second. To give you a little perspective, 16.4 feet per second would be the same as dropping your rocket from 4 feet with no parachute. To calculate how big your drogue chute should be, put in the diameter you are considering into the main parachute diameter input box. A good rule of thumb for drogue chutes is 50 feet per second. Once you have calculated your descent rates, you can use my drift calculator to see how far you will have to go to recover this rocket. |