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Modelling of Cryopumps for Space Electric Propulsion Usage

Neumann, Andreas and Brchnelova, Michaela (2024) Modelling of Cryopumps for Space Electric Propulsion Usage. Aerospace, 11 (3), pp. 1-26. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/aerospace11030177. ISSN 2226-4310.

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Official URL: https://www.mdpi.com/2226-4310/11/3/177


Electric space propulsion is a technology that is used in a continuously increasing number of spacecrafts. The qualification of these propulsion systems has to run in ground-based test facilities which requires long testing times and powerful pumping systems. In these usually large test facilities, high pumping speeds are achieved with cryopumps. Cryopump operation is very expensive with respect to electrical energy and cooling water consumption. Therefore, being able to optimize pump shape, cold plate material, and pump placement in a chamber is beneficial. Pump design and tuned operating strategies can reduce costs and increase intervals between regeneration. Testing different pump configuration setups in a large facility is mostly prohibitive due to high costs and long testing times. Optimization via modelling is a better choice for design and also, later, for operation. Therefore, having a numerical model and proven guidelines at hand for optimization is very helpful. This paper describes a new model developed at DLR for the optimization of cryopump layout and operation. Model results are compared with cryopump operational and warm-up data. This validation is the basis for further optimization actions like multi-layer insulation layouts and pump cold plate upgrades, and helps in understanding and mitigating the detrimental effect of water condensates on the cryopump cold plates.

Item URL in elib:https://elib.dlr.de/201801/
Document Type:Article
Title:Modelling of Cryopumps for Space Electric Propulsion Usage
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Neumann, AndreasUNSPECIFIEDhttps://orcid.org/0000-0002-6049-8969UNSPECIFIED
Date:23 February 2024
Journal or Publication Title:Aerospace
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Page Range:pp. 1-26
EditorsEmailEditor's ORCID iDORCID Put Code
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Series Name:MDPI Aerospace
Keywords:electric space propulsion; cryopumps; pumping speed; vacuum chamber
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):R - Reusable Space Systems and Propulsion Technology
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Spacecraft, GO
Deposited By: Neumann, Andreas
Deposited On:27 Feb 2024 13:59
Last Modified:27 Feb 2024 13:59

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