Optimizing Thermal Insulation of High-Altitude Weather Balloon Payloads

High altitude weather balloons are essential in allowing the scientific community to advance their understanding on a multitude of aerospace applications such as atmospheric, meteorology and climate research. These weather balloons experience extreme temperature ranges, as low as -70 to -150 degrees fahrenheit as they reach high altitudes. These extreme conditions require an effective thermal insulation material that will not only maintain the functionality of the system, but also the accuracy of the collected weather data. This particular study contributes to existing literature by evaluating the effectiveness of various thermal insulation materials in high altitude applications.This study evaluates materials based on factors such as heat resistance, durability, and weight. The materials that are used in this study are polystyrene foam rolls, low-pressure spray foam, and various other types of insulation shielding adhesives. A critical part of this study is the utilization of multi-layer insulation (MLI) influenced by the concept of “space blankets”, used in various other spacecraft designs. Ultimately, the main objective is to create the most optimized design that incorporates effective foam insulators, utilizes reflective shielding tape, and yields the maximum amount of heat retention. To evaluate the effectiveness of these materials, they are exposed to freezing temperatures using dry ice to simulate high-altitude flight and the results are examined to understand heat transfer within the payload. Overall, this research will improve the performance of high-altitude weather balloons and introduce the exploration of insulation materials that can be applied to other thermal management projects.