Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"Thermal Protection Systems"”.
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Characterization of carbon ablators for hypersonic thermal protection systems
… 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 an environment depends entirely on the thermal protection system (TPS). Ablative materials, which dissipate …
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Modeling the oxidation, ablation, and mechanics of carbon fiber preform in thermal protection systems
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms
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Assessment of damage to thermal protection systems due to micrometeoroid and orbital debris impacts
Thermal protection systems for hypersonic vehicles are low- to zero-fault-tolerant. In order to understand the fault tolerance of this system, the number of impacts that cause mission failure due to micro-meteoroid and orbital debris damage is presented. This number differs based on the mission, so …
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A Lagrangian, Discontinuous-Galerkin Material Response Solver for the Analysis of Ablative Thermal Protection Systems
Thermal protection systems (TPS) play a vital role in safeguarding aerospace vehicles from the intense aerodynamic heating encountered during hypersonic flight. One category of TPS materials manages extreme heat through pyrolysis, a process in which the elevated temperatures trigger an endothermic …
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Development, modeling and testing of thermal protection systems in small, slow-burning solid rocket motors
… Such a propulsion system presents unique thermal challenges due to the long exposure times and the close proximity of temperature sensitive vehicle components to the combustion reactions. This thesis presents the development of a thermal management system appropriate for small, slow …
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An Aero-Thermo-Chemo-Mechanical Coupling Framework for the Analysis of Hypersonic Ablative Thermal Protection Systems
… modeling of the hypersonic flight of ablative thermal protection systems (TPS): resolving the relevant coupled physical phenomena through multi-physics simulations, the management of the disparate spatiotemporal scales associated with the fluid and solid responses, and establishing a reliable …
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Comprehensive Modeling of Novel Thermal Systems: Investigation of Cascaded Thermoelectrics and Bio-Inspired Thermal Protection Systems Performance
Thermal systems involve multiple components assembled to store or transfer heat for power, cooling, or insulation purpose, and this research focuses on modeling the performance of two novel thermal systems that are capable of functioning in environments subjected to high heat fluxes. The first …
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Development of modeling tools for mesoscopic simulation of reacting high-temperature flows in phenolic-based thermal protection systems
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-08-01
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Assessment of the effect of designed-in features on thermal protection systems with application to vascular self-healing
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms
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Computation of Hypersonic Flows with Lateral Jets Using k-ω Turbulence Model
<p>Thermal Protection systems (TPS) are used as shields in space vehicles which encounter high heat and temperatures at the reentry altitudes. Among them, the cooling techniques and the ablative coatings are most popular. However, they have their own weight limitations. In the recent decade, …
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Advancing Autonomous Structural Health Monitoring
… source. Aerospace vehicles are equipped with thermal protection systems to isolate internal components from harsh reentry conditions. While the thermal protection systems are critical to the safety of the vehicle, finding damage in these structures presents a unique challenge. Impedance …
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Uncertainty quantification of vista charring ablator material database using Bayesian inference
… excessive heat energy that is transferred to it, Thermal Protection Systems are implemented in the spacecraft’s design. Current modeling tools used for the design of heat shields, however, have been shown to be unable to fully replicate material response data recorded during flight. Collaborative …
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Coupling of Fluid & Solid Thermal Models to Correct Heat Flux Measurements Taken on Launch Vehicles
<p>Knowledge of aerothermally induced convective heat transfer and plume induced radiative heat transfer loads is essential to the design of thermal protection systems (TPS) for launch vehicles. These loads are measured via the cylindrical heat flux gauges that are flush mounted with the outer …
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Near-Net Shaping and Additive Manufacturing of Ultra-High Temperature Ceramics via Colloidal Processing
… different sets of chemically curable polymer systems: HEMA+MBAM, TMPTA, and PEGDA. Merits of the gelcasting process including homogeneity, green strength, and processing time reduction are discussed, with the HEMA+MBAM system resulting in nearly an order of magnitude increase in green density …
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Investigation of nanoscale mechanisms driving erosion and pitting in graphitic carbon
… to accurately predict ablation rates of Thermal Protection Systems (TPS) during hypersonic reentry. The extreme heat and unique gas phase chemistry encountered during hypersonic reentry necessitates an analysis of the oxidation mechanisms at these conditions. Despite extensive research, …
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Scale-bridging molecular dynamics simulations of plasma-surface interactions
… plasma facing components in reactor vessels and thermal protection system in re-entry spacecraft. Due to the complex chemistry at the plasma surface boundaries, it is difficulty to either control or predict the effect of plasma on the patterning or erosion of the material. In this dissertation, …
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Nonequilibrium Shock-Layer Radiative Heating for Earth and Titan Entry
This thesis examines the modeling of the shock-layer radiative heating associated with hypersonic vehicles entering the atmospheres of Earth and Titan. For Earth entry, flight conditions characteristic of lunar-return are considered, while for Titan entry, the Huygens probe trajectory is …
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Multiscale corrosion of zirconium carbide, carbon, and CF/ZRC under extreme environments
… as oxygen, are a primary mechanism by which most protection system materials degrade during service. This ultimately leads to changes in structure, which in turn alter properties, necessitating a fundamental understanding of ultra-high temperature corrosion processes and consequences to …
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Construction of predictive uncertainty quantification framework to the extension of TPS plasma wind tunnel experiment data to flight conditions
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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Machine learning and uncertainty quantification framework for predictive ab initio Hypersonics
… rate coefficients) and macroscopic (e.g., thermal and chemical relaxation properties) levels. A correlation analysis is finally applied to identify the PES regions that require further refinement, based on their effects on the QoI reliability. The methodology is applied to the study of …