The resistance to the ascent of a balloon is to be determined by studying the ascent of a 1:50 scale model in water. How would such a model study be conducted and the results converted to prototype behavior?
Similitude: The technique of similitude can be used to predict prototype behavior from model results. Models resemble prototype, but are
1. Different size (usually smaller) and may operate in
2. Different fluid and under
3. Different conditions