
There have been a number of test flights of the NASA Super Pressure Balloon to explore the design, deployment of this type of structure, and flight duration. These test flights have positively worked toward improving the balloon fabrication approaches through new and innovative production processes. Advancements in the launch operations techniques have also been achieved.
The project approach has focused on incremental steps up in balloon volume and payload carrying capability. There are always challenges with both production and launch operations as a balloon goes up in size. The incremental stepwise approach to building bigger balloons was adopted to try to effectively manage these challenges and provide continuity for the process. Balloon volumes have steadily increased over time. Coupled with the increased balloon volume are increases in the number of gores in the balloon and the payload carrying capability. Below is a list of the balloon designs flown using the current design approach as part of this incremental development process.
The step up in volume, number of gores, and payload carrying capability can be clearly seen. Short summaries of a number of test flights of the current design are presented at the links below.
Report back for the latest update from NASA's Balloon Program Office.