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Showing 1 to 8 of 8 for “"Powered Descent"”.
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Robust trajectory and guidance optimization for guided powered descent and landing
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-05-01
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Autonomous optimal trajectory design employing convex optimization for powered descent on an asteroid
… is how to design a propellant (fuel) optimal powered descent trajectory that can be quickly computed onboard the spacecraft, without interaction from ground control. The goal is to autonomously design the optimal powered descent trajectory onboard the spacecraft immediately prior to the …
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Data-Driven and Dynamically Feasible Trajectory Generation for Real-Time Powered Descent Guidance and Robotic Exploration
… generation to achieve dynamically feasible powered descent guidance. While analytical and indirect methods are computationally efficient, significant simplifications of the dynamics and constraints are required for both problem formulations. Numerical optimization algorithms enable …
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Comparison of Guidance Methods for Autonomous Planetary Lander
Guidance methods for a powered descent planetary lander are examined. Several guidance laws are developed and analyzed including Apollo derived, modified Apollo, time efficient and fuel efficient methods. These laws are implemented using two different methods: Apollo approach, and real time. The …
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Lunar descent using sequential engine shutdown
… is introduced and its application to lunar descent is motivated. The concept calls for the utilization of multiple fixed thrust engines in place of a single continuously throttleable engine. Downrange position control is provided by properly timed engine shutdowns. The principle advantage …
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Hypersonic flight strategies for supersonic retropropulsion at Mars
… masses beyond the capability of current entry, descent, and landing technology. High-mass missions will likely use supersonic retropropulsion to increase landed mass, a paradigm shift from current supersonic parachute systems. This work explores hypersonic flight strategies appropriate for use …