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Meeting	ACGS Committee Meeting 131 - Newport News, VA - October 2023
Agenda Location	8 SUBCOMMITTEE E – FLIGHT, PROPULSION, AND AUTONOMOUS VEHICLE CONTROL SYSTEMS 8.3 Predictive Drag Modulation De-Orbit Control for the Re-Entry Targeting of the Hypersonic Configurable Unit Ballistic Experiment (HyCUBE)
Title	Predictive Drag Modulation De-Orbit Control for the Re-Entry Targeting of the Hypersonic Configurable Unit Ballistic Experiment (HyCUBE)
Presenter	Ryan Caverly
Affiliation	University of Minnesota
Available Downloads*	presentation
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Abstract	There is substantial recent interest and progress in the area of hypersonic flight (flight at speeds faster than Mach 5) for atmospheric entries, military application, and even possibly commercial flight. Our ability to model hypersonic flows is limited by difficulties in obtaining the high-quality aerothermodynamic data needed to calibrate model parameters. This talk will focus on the Hypersonic Configurable Unit Ballistic Experiment (HyCUBE) being developed at the University of Minnesota. HyCUBE is a low-cost, CubeSat-like spacecraft that will be deployed from low-Earth orbit and re-enter Earth’s atmosphere at hypersonic velocities while acquiring valuable aerothermodynamic data. A key part of the HyCUBE mission is the ability to perform re-entry targeting of the vehicle using only a differential in drag as a means of actuation. I will present an model predictive control (MPC) approach to drag modulation that we have developed that leverages atmospheric density estimates to minimize the vehicle’s tracking error at the re-entry interface. An overview of the HyCUBE flight test plan will also be provided.