From Theory?. A better understanding and the basis to learn more quickly. Concepts, Figures and Explanations. Primarily concerned with understanding the detail of how a balloon goes up and down. Some surprising facts and reasons why. Some practical stuff.
A better understanding and the basis to learn more quickly.
Aerodyamic effect of a curved surface
1 second of burning increases average envelope temperature by 1 °C
10 seconds of not burning decreases average envelope temperature by 1 °C
Resistance is proportional to the velocity squared.
Temperature control not so critical
Equilib T Reached
Deceleration rate increases
Steep descent (45°) possible
Steep descent not possible – why?