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Flow-Tube Reactor Experiments on the High Temperature Oxidation of Carbon Weaves
NTRS Full-Text: Click to View  [PDF Size: 5.9 MB]
Author and Affiliation:
Panerai, Francesco(Analytical Mechanics Associates, Inc., Moffett Field, CA, United States)
White, Jason D.(SRI International Corp., Menlo Park, CA, United States)
Robertson, Robert(SRI International Corp., Menlo Park, CA, United States)
Borner, Arnaud(Science and Technology Corp., Moffett Field, CA, United States)
Ferguson, Joseph C.(Science and Technology Corp., Moffett Field, CA, United States)
Mansour, Nagi N.(NASA Ames Research Center, Moffett Field, CA, United States)
Abstract: Under entry conditions carbon weaves used in thermal protection systems (TPS) decompose via oxidation. Modeling this phenomenon is challenging due to the different regimes encountered along a flight trajectory. Approaches using equilibrium chemistry may lead to over-estimated mass loss and recession at certain conditions. Concurrently, there is a shortcoming of experimental data on carbon weaves to enable development of improved models. In this work, a flow-tube test facility was used to measure the oxidation of carbon weaves at temperatures up to 1500 K. The material tested was the 3D carbon weave used for the heat shield of the NASA Adaptive Deployable Entry and Placement Technology, ADEPT. Oxidation was characterized by quantifying decomposition gases (CO and CO2), by mass measurements, and by microscale surface analysis. The current set of measurements contributes to the development of finite rate chemistry models for carbon fabrics used in woven TPS materials.
Publication Date: Aug 30, 2017
Document ID:
20170012208
(Acquired Dec 19, 2017)
Subject Category: COMPOSITE MATERIALS
Report/Patent Number: ARC-E-DAA-TN46368
Document Type: Oral/Visual Presentation
Meeting Information: Ablation Workshop; 9th; 30-31 Aug. 2017; Bozeman, MT; United States
Meeting Sponsor: NASA; Washington, DC, United States
Contract/Grant/Task Num: NNA15BB15C; NNA16BD60C
Financial Sponsor: NASA Ames Research Center; Moffett Field, CA, United States
Organization Source: NASA Ames Research Center; Moffett Field, CA, United States
Description: 1p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Public use permitted
NASA Terms: CARBON FIBERS; WEAVING; HIGH TEMPERATURE; OXIDATION; DECOMPOSITION; HEAT SHIELDING; THERMAL PROTECTION; TEST FACILITIES; CARBON DIOXIDE
Other Descriptors: WOVEN TPS; CARBON FIBERS; OXIDATION
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Last Modified: December 19, 2017
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