This paper describes the lumped-parameter modeling, identification, and control of the payload temperature inside a high-altitude balloon gondola. Experimental methods for identifying the lumped thermal resistance and thermal capacitance at the launch-altitude and at high-altitude are described. Utilizing the identified values, both a pressureindependent model and a pressure-dependent model are formulated. With knowledge of the thermal resistance, a bang-off control system is sized to keep the payload temperature above a prescribed limit. Both of the closed-loop models are validated with recorded flight data.
How to Cite:
Isenberg, D. R. & Rookaird, B. M. & Weisshaupt, J. & Smith, J. & Winterling, B., (2012) “Identifying the Thermal Parameters and Controlling the Temperature of a High-Altitude Balloon Payload”, Academic High Altitude Conference 2012(1), p.1–14. doi: https://doi.org//ahac.8314