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Showing 1 to 14 of 14 for “"Planetary entry"”.
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Magnetohydrodynamic energy generation and flow control for planetary entry vehicles
… (MHD) interaction with the high temperature entry plasma. Potential mission designs, power generation and power storage configurations are explored, as well as uses for the reclaimed energy. Furthermore, the impact and utility of MHD flow interaction for vehicle control is assessed. The state …
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On stress, strength, and failure in asteroids during planetary entry
… have motivated an effort to model their entry and breakup in Earth’s atmosphere. These models, crucial to planetary defense efforts, necessitate an understanding of the physics underlying fragmentation — including knowledge of key governing physical properties such as strength. Recovered …
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Assessment of aerosurface-based hypersonic control of blunt bodies for planetary entry
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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MULTIDISCIPLINARY OPTIMIZATION OF NON-SPHERICAL, BLUNT-BODY HEAT SHIELDS FOR A PLANETARY ENTRY VEHICLE
… optimal heat shield geometries for blunt-body planetary entry vehicles. In the parametric study, performance trends have been identified by varying geometric parameters that define a range of cross-sections and axial shapes. Cross-sections considered include oblate and prolate ellipses, …
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Modeling of high enthalpy flows for hypersonic re-entry and ground-based arc-jet testing
… modeling high enthalpy ionized gas flows during planetary entry flights and ground-based arc-jet testing. The system of Favre-averaged Navier-Stokes equations in thermo-chemical non-equilibrium with Spalart-Allmaras turbulence closure is outlined, along with models for thermodynamics, chemical …
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Numerical Treatment of Schrödinger’s Equation for One-Particle and Two-Particle Systems Using Matrix Method
… predicting aerothermal environments for planetary entry, recent researches have concentrated on developing high fidelity computational models using quantum-mechanical first principles. These calculations are dependent on solving the Schrödinger equation using molecular orbital theory …
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High-Temperature Performance of Carbon Fiber Reinforced Cyanate Ester Composites Filled with Nano-Ceramics
… hot combustion gases and as heat shielding for planetary entry also. Different loading levels (5wt%, 7.5wt% and 10wt%) of zirconium dioxide (ZrO2) and boron carbide(B4C) nano-ceramics are dispersed into the cyanate ester resin using three roll mill and ultrasonication process. Hand layup …
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CHAOS: A multi-GPU PIC-DSMC solver for modeling gas and plasma flows
… that dominate the extreme environments of planetary entry and in-space propulsion. However, simulations of these systems that evolve over multiple length- and time-scales is computationally expensive. Until recently, approximations were used to keep computational costs tenable, which in …
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Assessment of moving-mass actuators for hypersonic vehicles with deployable decelerators
… trajectory control in the hypersonic regime of planetary entry. Trajectory control is achieved by shifting the location of the center of gravity relative to the center of pressure to modify aerodynamic trim conditions. The vehicle is modeled as a cylinder with a deployable forebody and a …
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Physics-informed neural surrogates for next-generation aerothermochemical modeling
… range of reactive flow environments, spanning planetary entry and astrophysical flows to plasma-assisted combustion and flow control. State-to-state (StS) collisional–radiative (CR) models provide the highest level of physical fidelity by explicitly resolving the species population dynamics of …
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Characterization of carbon ablators for hypersonic thermal protection systems
Hypersonic entry of a planetary atmosphere is among the most demanding environments in engineering, where a vehicle's kinetic energy is rapidly converted to thermal energy, generating extreme heat and caustic chemical conditions that rapidly destroy even the most advanced materials. Surviving such …
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Feasibility assessment of magnetohydrodynamics for hypersonic trajectory control for planetary exploration applications
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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Performance assessment of Mars entry systems with flap-based trajectory control
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-14 without embargo terms