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The force on a body resulting from it's motion through a fluid (gas or liquid). This force is directly opposed to the direction of travel.

0 votes
1 answer
555 views

Hot air balloon trajectory predictions

So once the balloon hits that wind, would you calculate forward distance based on the wind speed (so would the balloon speed be exactly the average wind speed) or would you use the standard drag equation …
Kyle Hotchkiss's user avatar
1 vote
1 answer
2k views

Reference area of a parachute

I am trying to do an aerodynamic drag equation on a descending parachute (the round variety) and have no idea what the reference area on one would be. …
Kyle Hotchkiss's user avatar