Assessment of the Mars helicopter thermal design sensitivities using the Veritrek software
The Mars Helicopter will be a technology demonstration conducted during the Mars 2020 mission. A reduced-order model (ROM) created with the Veritrek software was utilized to explore the sensitivities of the thermal system’s drivers, such as electronics dissipations, gas gaps, and heat transfer coefficients, as well as to assess and verify the final thermal design. The results produced by Veritrek were utilized to study the effect of the major thermal design drivers and Mars environment on the Mars Helicopter in as little as 10 days, an effort that would have taken over 4 months using traditional thermal analysis techniques.
Automatic creation of Reduced-Order Models using Thermal Desktop
A reduced-order modeling approach to predict spacecraft output responses for a set of input factors was developed. It is based on Latin Hypercube sampling and Gaussian Process regression modeling. This approach was successfully applied to a broad range of applications including the Orion Crew Exploration Vehicle and a nominal Hex Spacecraft Bus. Results compared favorably to the underlying Thermal Desktop® model.
Enhanced data exploration through Reduced-order Models
A reduced-order modeling approach to predict spacecraft output responses for a set of input factors was developed. It is based on Latin Hypercube sampling and Gaussian Process regression modeling. A test case, based on a simplified Orion Crew Exploration Vehicle Thermal Desktop® model, was developed and included nine input factors and seven output responses. Output response residuals, found for predicted temperatures, hydraulic power, and pressure, had means of 1.6 K, 0.2 W, 1.6 kPa and standard deviations of 5.0 K, 1.93 W, 18.2 kPa, respectively.