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contributor authorLorenzo Valdevit
contributor authorNatasha Vermaak
contributor authorFrank W. Zok
contributor authorAnthony G. Evans
date accessioned2017-05-09T00:26:33Z
date available2017-05-09T00:26:33Z
date copyrightNovember, 2008
date issued2008
identifier issn0021-8936
identifier otherJAMCAV-26727#061022_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/137219
description abstractThis article provides a materials selection methodology applicable to lightweight actively cooled panels, particularly suitable for the most demanding aerospace applications. The key ingredient is the development of a code that can be used to establish the capabilities and deficiencies of existing panel designs and direct the development of advanced materials. The code is illustrated for a fuel-cooled combustor liner of a hypersonic vehicle, optimized for minimum weight subject to four primary design constraints (on stress, temperatures, and pressure drop). Failure maps are presented for a number of candidate high-temperature metallic alloys and ceramic composites, allowing direct comparison of their thermostructural performance. Results for a Mach 7 vehicle under steady-state flight conditions and stoichiometric fuel combustion reveal that, while C–SiC satisfies the design requirements at minimum weight, the Nb alloy Cb752 and the Ni alloy Inconel X-750 are also viable candidates, albeit at about twice the weight. Under the most severe heat loads (arising from heat spikes in the combustor), only Cb752 remains viable. This result, combined with robustness benefits and fabrication facility, emphasizes the potential of this alloy for scramjets.
publisherThe American Society of Mechanical Engineers (ASME)
titleA Materials Selection Protocol for Lightweight Actively Cooled Panels
typeJournal Paper
journal volume75
journal issue6
journal titleJournal of Applied Mechanics
identifier doi10.1115/1.2966270
journal fristpage61022
identifier eissn1528-9036
keywordsPressure
keywordsTemperature
keywordsFuels
keywordsStress
keywordsCoolants
keywordsCombustion chambers
keywordsDesign
keywordsFailure
keywordsBoundary-value problems AND Pressure drop
treeJournal of Applied Mechanics:;2008:;volume( 075 ):;issue: 006
contenttypeFulltext


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