東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Ablation study of tungsten-based nuc...

Smith, Tabitha Elizabeth Rose.

Linked to FindBook

Google Book

Amazon

博客來

Ablation study of tungsten-based nuclear thermal rocket fuel.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Ablation study of tungsten-based nuclear thermal rocket fuel./
Author:	Smith, Tabitha Elizabeth Rose.
Description:	129 p.
Notes:	Source: Dissertation Abstracts International, Volume: 75-09(E), Section: B.
Contained By:	Dissertation Abstracts International75-09B(E).
Subject:	Engineering, Aerospace. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3622956
ISBN:	9781303951428

Ablation study of tungsten-based nuclear thermal rocket fuel.
Smith, Tabitha Elizabeth Rose.

Ablation study of tungsten-based nuclear thermal rocket fuel. - 129 p.

Source: Dissertation Abstracts International, Volume: 75-09(E), Section: B.

Thesis (Ph.D.)--The George Washington University, 2014.

The research described in this thesis has been performed in order to support the materials research and development efforts of NASA Marshall Space Flight Center (MSFC), of Tungsten-based Nuclear Thermal Rocket (NTR) fuel. The NTR was developed to a point of flight readiness nearly six decades ago and has been undergoing gradual modification and upgrading since then. Due to the simplicity in design of the NTR, and also in the modernization of the materials fabrication processes of nuclear fuel since the 1960's, the fuel of the NTR has been upgraded continuously. Tungsten-based fuel is of great interest to the NTR community, seeking to determine its advantages over the Carbide-based fuel of the previous NTR programs.

ISBN: 9781303951428Subjects--Topical Terms:

1018395
Engineering, Aerospace.

Ablation study of tungsten-based nuclear thermal rocket fuel.
LDR:03054nmm a2200313 4500 001 2055355
005 20141203121522.5
008 170521s2014 ||||||||||||||||| ||eng d
020 $a 9781303951428
035 $a (MiAaPQ)AAI3622956
035 $a AAI3622956
040 $a MiAaPQ $c MiAaPQ
100 1 $a Smith, Tabitha Elizabeth Rose. $3 3169005
245 1 0 $a Ablation study of tungsten-based nuclear thermal rocket fuel.
300 $a 129 p.
500 $a Source: Dissertation Abstracts International, Volume: 75-09(E), Section: B.
500 $a Adviser: Michael Keidar.
502 $a Thesis (Ph.D.)--The George Washington University, 2014.
520 $a The research described in this thesis has been performed in order to support the materials research and development efforts of NASA Marshall Space Flight Center (MSFC), of Tungsten-based Nuclear Thermal Rocket (NTR) fuel. The NTR was developed to a point of flight readiness nearly six decades ago and has been undergoing gradual modification and upgrading since then. Due to the simplicity in design of the NTR, and also in the modernization of the materials fabrication processes of nuclear fuel since the 1960's, the fuel of the NTR has been upgraded continuously. Tungsten-based fuel is of great interest to the NTR community, seeking to determine its advantages over the Carbide-based fuel of the previous NTR programs.
520 $a The materials development and fabrication process contains failure testing, which is currently being conducted at MSFC in the form of heating the material externally and internally to replicate operation within the nuclear reactor of the NTR, such as with hot gas and RF coils. In order to expand on these efforts, experiments and computational studies of Tungsten and a Tungsten Zirconium Oxide sample provided by NASA have been conducted for this dissertation within a plasma arc-jet, meant to induce ablation on the material.
520 $a Mathematical analysis was also conducted, for purposes of verifying experiments and making predictions. The computational method utilizes Anisimov's kinetic method of plasma ablation, including a thermal conduction parameter from the Chapman Enskog expansion of the Maxwell Boltzmann equations, and has been modified to include a tangential velocity component. Experimental data matches that of the computational data, in which plasma ablation at an angle shows nearly half the ablation of plasma ablation at no angle. Fuel failure analysis of two NASA samples post-testing was conducted, and suggestions have been made for future materials fabrication processes. These studies, including the computational kinetic model at an angle and the ablation of the NASA sample, could be applied to an atmospheric reentry body, reentering at a ballistic trajectory at hypersonic velocities.
590 $a School code: 0075.
650 4 $a Engineering, Aerospace. $3 1018395
650 4 $a Engineering, Mechanical. $3 783786
650 4 $a Engineering, Nuclear. $3 1043651
690 $a 0538
690 $a 0548
690 $a 0552
710 2 $a The George Washington University. $b Mechanical and Aerospace Engineering. $3 1058366
773 0 $t Dissertation Abstracts International $g 75-09B(E).
790 $a 0075
791 $a Ph.D.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3622956