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.
Results
Showing 1 to 20 of 36 for “"Hypersonics"”.
-
Machine learning and uncertainty quantification framework for predictive ab initio Hypersonics
Hypersonics represents one of the most challenging applications for predictive science. Due to the multi-scale and multi-physics characteristics, high-Mach phenomena are generally complex from both the computational and the experimental perspectives. Nevertheless, the related simulations typically …
-
Preliminary design of a high enthalpy plasma tunnel for atmospheric re-entry research
… the Plasmatron One wind tunnel at the Center for Hypersonics and Entry Systems Studies (CHESS) at the University of Illinois at Urbana Champaign (UIUC). The centerpiece of the facility is an Inductively Coupled Plasma (ICP) torch capable of recreating flow conditions similar to what reentering …
-
The Patch Integral Method (PIM), a New Heat Transfer Analysis Tool for Hypersonic Wind Tunnel Facilities at NASA Langley
… wind tunnels serve a vital role in the field of hypersonics in both helping validate CFD predictions and producing experimental results. These tunnels have been heavily utilized for decades by numerous planetary missions, such as MSL and Orion, commercial and academic partnerships, such as Sierra …
-
Evaluation of Various Energy Storage Options for the Internal Thermal Loads of a Non-Airbreathing Hypersonic Vehicle
… piece of expanding their overall capabilities. Hypersonics not only produce large external thermal loads, but also an abundance of internal thermal loads from components such as power electronics, avionics, and batteries. Additionally, limited volume within such vehicles introduces additional …
-
Thermal and Optical Properties of Oxide Coatings for High-Temperature Applications
… work including thermal protective systems for hypersonics and selective emitters for spacecraft.
-
Reaction Control Jet Actuators for Air-Breathing Hypersonic Vehicles
Air-breathing hypersonic vehicles have an engine which is tightly integrated with the airframe. This integration leads to complex dynamic characteristics, such as propulsion-pitch coupling. As a result, air-breathing hypersonic vehicles tend to be unstable and high frequency control is required to …
-
Innovative Transverse Jet Interaction Arrangements in Supersonic Crossflow
The experiments on this project proceeded on the premise that adding an array of auxiliary jets behind a main jet injector would alleviate the large region of low pressure typically found downstream of a normal, sonic injector in supersonic flow and also possibly increase in intensity of the …
-
Multiscale corrosion of zirconium carbide, carbon, and CF/ZRC under extreme environments
… air environments, such as those seen in hypersonics, highly reactive gas species, such 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 …
-
Experimental surface heat flux measurement in hypervelocity flows
Prediction of heat transfer is integral to development of hypersonic vehicles. Underprediction of heat transfer rates can result in catastrophic failures during flight testing. An example which illustrates the importance of heat transfer during hypersonic flight is the destruction of the space …
-
Experimental study of flow choking and inlet unstart in an axisymmetric model scramjet
Made available in DSpace on 2018-09-27T16:28:03Z (GMT). No. of bitstreams: 3 BACCARELLA-DISSERTATION-2018.pdf: 11707373 bytes, checksum: 856182803b3b4bbc32de9773806c5add (MD5) LICENSE.txt: 4215 bytes, checksum: 6aa9b4b4beb7f8c687f2f47db1477e87 (MD5) PROQUEST_LICENSE.txt: 4561 bytes, checksum: …
-
Variable Geometry Scramjet Combustor Cavity Multi-Dimensional Treatise for Performance Analysis
The abilities of Scramjets and Ramjets, in their respective operating ranges, are partially bridged by dual-mode Scramjets. The limitations of operation are due to making a static motor that is designed to function in both modes resulting in low and high speed restrictions. This study covers the …
-
Magnetohydrodynamic energy generation and flow control for planetary entry vehicles
Proposed missions such as a Mars sample return mission and a human mission to Mars require landed payload masses in excess of any previous Mars mission. Whether human or robotic, these missions present numerous engineering challenges due to their increased mass and complexity. To overcome these …
-
Design and analysis of a compact high-speed air-breathing engine
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-08-01
-
Computational modeling of test articles in the PlasmatronX inductively coupled plasma facility
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-08-01
-
Experimental investigation of liquid fragmentation in hypersonic cross flow
This thesis presents an experimental investigation carried out to study penetration and fragmentation of liquid injected into Mach 6 hypersonic cross flow. Flow topology, shock and vortex systems, fragmentation and atomization mechanisms are investigated using high-speed photography, Schlieren …
-
Laser absorption spectroscopy for investigation of hypersonic propulsion
Advancements in scramjet technology have arisen from recent interest in hypersonic propulsion. Progress in ground-testing capabilities has accelerated this technological advancement, providing repeatable and controllable experimentation at lower costs than flight tests. A primary challenge of …
-
Multidimensional and High Frequency Heat Flux Reconstruction Applied to Hypersonic Transitional Flows
The ability to predict and control laminar-to-turbulent transition in high-speed flow has a substantial effect on heat transfer and skin friction, thus improving the design and operation of hypersonic vehicles. The control of transition on blunt bodies is essential to improve the performance of …
-
High-fidelity modeling of high-enthalpy plasma wind tunnels for hypersonic testing
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-08-01
-
Modeling of boundary layer thermochemistry in hypersonic flows
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
-
Experimental and numerical study of hypersonic aeroelastic intakes
This thesis investigates the off-design intake operations due to aeroelasticity. An aeroelastic intake was tested in a hypersonic wind tunnel to assess its dynamic flowfield, structural response, and performance. The experiments were informed with static 2D, full-scale static 3D, and fully coupled …
Page 1 of 2