Numerical study of a novel monolithic heat exchanger for electrothermal space propulsion
Numerical study of a novel monolithic heat exchanger for electrothermal space propulsion
Fully-coupled multiphysics simulations are applied to investigate a number of candidate heat exchanger materials in the Super-High Temperature Additively-Manufactured Resistojet (STAR) thruster. Two mission applications are considered: a low earth orbit (LEO) primary propulsion application and a secondary reaction control system (RCS) application of an all-electric geostationary (GEO) telecommunications platform. High-temperature operation provides a significant increase in specific impulse over the state-of-the-art Xenon-resistojets. Inconel 718 is investigated for moderate-performance for LEO applications, while pure tantalum and pure rhenium are examined for the extreme temperature high-performance GEO application. Simulations determine the attainable performance including heat transfer, Navier-Stokes continuum flow and Joule heating physics in both transient and steady state. Nozzle efficiency, heat exchanger efficiency, electrical characteristics and other key performance indicators are explored.
8-16
Romei, Federico
2c01d8c3-430b-49f8-9c8c-e30d0d135f89
Grubisic, Angelo
a4cab763-bbc0-4130-af65-229ae674e8c8
June 2019
Romei, Federico
2c01d8c3-430b-49f8-9c8c-e30d0d135f89
Grubisic, Angelo
a4cab763-bbc0-4130-af65-229ae674e8c8
Romei, Federico and Grubisic, Angelo
(2019)
Numerical study of a novel monolithic heat exchanger for electrothermal space propulsion.
Acta Astronautica, 159, , [AA 7375].
(doi:10.1016/j.actaastro.2019.03.025).
Abstract
Fully-coupled multiphysics simulations are applied to investigate a number of candidate heat exchanger materials in the Super-High Temperature Additively-Manufactured Resistojet (STAR) thruster. Two mission applications are considered: a low earth orbit (LEO) primary propulsion application and a secondary reaction control system (RCS) application of an all-electric geostationary (GEO) telecommunications platform. High-temperature operation provides a significant increase in specific impulse over the state-of-the-art Xenon-resistojets. Inconel 718 is investigated for moderate-performance for LEO applications, while pure tantalum and pure rhenium are examined for the extreme temperature high-performance GEO application. Simulations determine the attainable performance including heat transfer, Navier-Stokes continuum flow and Joule heating physics in both transient and steady state. Nozzle efficiency, heat exchanger efficiency, electrical characteristics and other key performance indicators are explored.
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In preparation date: 2018
Submitted date: 10 September 2018
Accepted/In Press date: 24 November 2018
e-pub ahead of print date: 14 March 2019
Published date: June 2019
Identifiers
Local EPrints ID: 429009
URI: http://eprints.soton.ac.uk/id/eprint/429009
ISSN: 0094-5765
PURE UUID: d0147324-4db3-4ff5-ac73-26870596afa1
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Date deposited: 18 Mar 2019 17:30
Last modified: 29 Nov 2024 15:30
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