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Laser Ablation Experiments on the Tamdakht H5 Chondrite
NTRS Full-Text: Click to View  [PDF Size: 1.5 MB]
Author and Affiliation:
White, Susan M.(NASA Ames Research Center, Moffett Field, CA, United States)
Stern, Eric(NASA Ames Research Center, Moffett Field, CA, United States)
Abstract: High-powered lasers were used to induce ablation and to form fusion crusts in the lab on Tamdakht H5 chondrites and basalt. These ground tests were undertaken to improve our understanding, and ultimately improve our abilty to model and predict, meteoroid ablation during atmospheric entry. The infrared fiber laser at the LHMEL facilty, operated in the continuous wave (i.e. non-pulsed) mode, provided radiation surface heat flux at levels similar to meteor entry for these tests. Results are presented from the first round of testing on samples of Tamdakht H5 ordinary chondrite which were ex-posed to entry-relevant heating rates between 2 and 10 kWcm2.
Publication Date: Jul 27, 2017
Document ID:
20170010681
(Acquired Nov 13, 2017)
Subject Category: FLUID MECHANICS AND THERMODYNAMICS
Report/Patent Number: ARC-E-DAA-TN45052
Document Type: Oral/Visual Presentation
Meeting Information: Annual Meeting of The Meteoritical Society; 80th; 23-28 Jul. 2017; Santa Fe, NM; United States
Meeting Sponsor: New Mexico State Univ.; Inst. of Meteoritics; Albuquerque, NM, United States
Contract/Grant/Task Num: WBS 582622.02.01.02.45.02.01
Financial Sponsor: NASA Ames Research Center; Moffett Field, CA, United States
Organization Source: NASA Ames Research Center; Moffett Field, CA, United States
Description: 15p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright; Work of the U.S. Government - Public use permitted
NASA Terms: LASER ABLATION; AERODYNAMIC HEATING; METEOROIDS; ATMOSPHERIC ENTRY; CONTINUOUS RADIATION; CHONDRITES; ABLATION; HEAT FLUX; GROUND TESTS; FIBER LASERS; BASALT; RADIANT HEATING
Other Descriptors: LASER; SPECTROSCOPY; METEOR
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Last Modified: November 13, 2017
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