- Method
- Free-flight (free-to-oscillate) CFD
- Mach
- M∞ = 1.44
- Initial α
- α0 = 2° and 20°
- Outputs
- Pitch history θ(t), pitch-damping derivatives, DMD modes
Dynamic stability of reentry capsules
Physics-Guided Multifidelity Learning for Characterization of Blunt-Body Dynamic Stability (80NSSC23K0231, with a paid extension)
Blunt reentry capsules can become dynamically unstable in pitch at supersonic and transonic speeds, where small oscillations grow into limit cycles. The lab characterizes this behavior from free-flight CFD of the Genesis capsule, using multifidelity data fusion, Bayesian estimation of pitch-damping derivatives, neural-operator surrogates, dynamic mode decomposition, and equation discovery.























