Hello, Aero Putra space here!
Can anyone share their experiences and knowledge about how to plan a mission for long duration high altitude balloon? such as how to predict their trajectory and what is the important parameter need to consider in this mission. We are planning to launch a high altitude balloon and using altitude control mechanism to maintained the balloon at 20-30 km altitude up to 3 days. This mission objective was to test the ability of energy harvesting at high altitude using Stirling engine. We don't have any experience for long duration flight.