contributor author | Kirollos, Benjamin | |
contributor author | Povey, Thomas | |
date accessioned | 2017-11-25T07:19:50Z | |
date available | 2017-11-25T07:19:50Z | |
date copyright | 2017/18/1 | |
date issued | 2017 | |
identifier issn | 0889-504X | |
identifier other | turbo_139_04_041009.pdf | |
identifier uri | http://138.201.223.254:8080/yetl1/handle/yetl/4236051 | |
description abstract | The continuing maturation of metal laser-sintering technology (direct metal laser sintering (DMLS)) presents the opportunity to derisk the engine design process by experimentally down-selecting high-pressure nozzle guide vane (HPNGV) cooling designs using laboratory tests of laser-sintered—instead of cast—parts to assess thermal performance. Such tests could be seen as supplementary to thermal-paint test engines, which are used during certification to validate cooling system designs. In this paper, we compare conventionally cast and laser-sintered titanium alloy parts in back-to-back experimental tests at engine-representative conditions over a range of coolant mass flow rates. Tests were performed in the University of Oxford Annular Sector Heat Transfer Facility. The thermal performance of the cast and laser-sintered parts—measured using new infrared processing techniques—is shown to be very similar, demonstrating the utility of laser-sintered parts for preliminary engine thermal assessments. We conclude that the methods reported in this paper are sufficiently mature to make assessments which could influence engine development programs. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Laboratory Infrared Thermal Assessment of Laser-Sintered High-Pressure Nozzle Guide Vanes to Derisk Engine Design Programs | |
type | Journal Paper | |
journal volume | 139 | |
journal issue | 4 | |
journal title | Journal of Turbomachinery | |
identifier doi | 10.1115/1.4035074 | |
journal fristpage | 41009 | |
journal lastpage | 041009-12 | |
tree | Journal of Turbomachinery:;2017:;volume( 139 ):;issue: 004 | |
contenttype | Fulltext | |