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 5 of 5 for “"transpiration cooling"”.
-
Transpiration cooling of a cylinder in crossflow : an experimental investigation
Experiments have been carried out in air on a two-inch diameter porous cylinder to determine the effect of air injection on heat transfer from a cylinder in crossflow. The Reynolds number based on cylinder diameter and free stream conditions was varied from 31,200 to 119,000 for the dimensionless …
-
Theoretical Analysis of Transpiration Cooling of a Liquid Rocket Thrust Chamber Wall
<p>Transpiration cooling is a process that could reduce the overall weight of the cooling system of an actively cooled thrust chamber wall of a liquid rocket engine by up to 50% when compared to other active cooling techniques, increasing the thrust to weight ratio of the rocket engine. In this …
-
Nickel-based designed materials manufactured via laser-based powder bed fusion of metals for high-temperature applications
… by using high-temperature alloys or cutting-edge cooling techniques. Using open-porous structures made from superalloys for transpiration cooling is one of these approaches. The additive manufacturing technology, laser-based powder bed fusion of metals (PBF-LB/M) can create parts from high …
-
Advanced Synthesis of Ultra-High Temperature Ceramics (UHTCs) and High Temperature Electron Emitting Materials
… materials for implementation of electron transpiration cooling for hypersonic vehicle development.
-
Systemanalytische Untersuchung einer Brennkammer in faserkeramischer Bauweise von Raketenantrieben
This work describes an analytic model for evaluation of expected effects of the use of ceramic materials in the construction of rocket engine thrust chambers. An engine of a thrust level around 1500 kN is defined and analyzed. The engine analysis makes use of the DLR tool LRP, which calculates …