Main Chute Sizing |
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The formulas provided below will calculate an estimated parachute size that will result in a descent rate of about 15 feet per second. If the landing area is hard, such as packed earth or salt, a slower descent rate
may be desired to prevent damage to the rocket.
Circular Parachute
Example of a 5 pound rocket:
X-Form Parachute
Example of a 5 pound rocket:
A smaller parachute will result in a faster descent. A larger one a slower descent. If the ground is soft, such as grass covered, you may want to use a smaller parachute for a faster descent. A faster descent will result in less drift. If the ground is hard, like frozen earth or salt, you may want a slower descent, and therefore a larger parachute. Submitted by Dean Roth |
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