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Raman Examination for Contamination:...

Grenier, Harmont Louis Leo,

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Raman Examination for Contamination: Iron Nitrate and Propellant Evaluation /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Raman Examination for Contamination: Iron Nitrate and Propellant Evaluation // Harmont Louis Leo Grenier.
Author:	Grenier, Harmont Louis Leo,
Description:	1 electronic resource (95 pages)
Notes:	Source: Masters Abstracts International, Volume: 86-04.
Contained By:	Masters Abstracts International86-04.
Subject:	Nitrates. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31345207
ISBN:	9798342106511

Raman Examination for Contamination: Iron Nitrate and Propellant Evaluation /
Grenier, Harmont Louis Leo,

Raman Examination for Contamination: Iron Nitrate and Propellant Evaluation /Harmont Louis Leo Grenier. - 1 electronic resource (95 pages)

Source: Masters Abstracts International, Volume: 86-04.

Since before the Apollo era, the rocket propulsion sector has been a key player in developing standards of cleanliness and compatibility when designing, building, and operating systems with toxic propellants. The advent of hypergols and the widespread use of propellants like N 2O4, Mixed Oxides of Nitrogen (MON), and hydrazine have forced new standards to be developed to meet the ever-growing need for safety when working with dangerous substances. These systems have only continued to grow more complex and many propellant combinations remain toxic and corrosive to most substances as the industry seeks the optimal methods for deriving the most efficient, highest performing, and generally more capable. ASTM International and other standards organizations carry on documenting standards for cleaning and passivation to ensure safe use today to meet the needs of the ever-expanding propulsion industry.This thesis aims to determine the feasibility of using Raman spectroscopy as a method of characterizing interactions between metals and propellants. First, a background of knowledge regarding the spectroscopic method, propellants, and industry practices was researched and current areas of possible application were identified. The passivation and propellant storage phases of system lifecycles were determined to be the scope and target for experimentation. A multilevel passivation study consisting of exposing three metal types to different concentrations of nitric acid for various durations was conducted to begin developing a greater understanding of the applicability of and the techniques required to make Raman spectroscopy work as a complement to the ASTM passivation verification tests. Lessons learned from this and a short-duration compatibility study with MON and similar metal samples were documented and will be used for a larger scale and longer duration compatibility study in conjunction with NASA White Sands Test Facility (WSTF). The buildup of safe and adequate facilities for such a study was undertaken, completed, and documented in this work.The results of testing in this thesis suggest the promising and desirable non-destructive and minimally invasive features of Raman spectroscopy have the potential to be used extensively in the propulsion sector. Suggestions for developing key techniques and methods for this application are developed and outlined as they were learned throughout the study's conduction.

English

ISBN: 9798342106511Subjects--Topical Terms:

914879
Nitrates.

Raman Examination for Contamination: Iron Nitrate and Propellant Evaluation /
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