Hi again,
I recently used an online decent rate calculator on
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My rocket weighs around 11 lbs fully loaded, after the propellant has been burned, and I will be using two 36" chutes to bring it down. However the chutes are reefed and so they are supposed to have the same amount of drag as a
44" chute. These two parachutes together I asume would have around the same drag as an 88" chute. The calculator said that under these conditions, my decent rate would be about 17 fps. The note on the bottom of the page says that a safe decent rate is 15 fps or slower, however I have seen that the average decent rate is 20 fps.
Is this correct, or is 17fps still a safe landing? I know this is more of an opinion than fact, but I would still like to here what others have learned from exsperience.
Thanks a lot,
Tom Sak