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Recent experiments on thruster plume induced contamination

Grabe, Martin (2023) Recent experiments on thruster plume induced contamination. In: Contamination Control, Materials and Planetary Protection (CCMPP) Workshop. Contamination Control, Materials and Planetary Protection (CCMPP) Workshop, 2023-09-12 - 2023-09-14, Washington, D.C., USA.

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Official URL: https://ccmpp.gsfc.nasa.gov/


Contamination induced by orbital reaction control thruster plumes is known to be degrading the thermo-optical properties of spacecraft functional surfaces, distorting measurements from sensitive instrumentation and impeding the detection of organics. Scientists and engineers use models describing the transport of solid, liquid and gaseous ejecta from thrusters. However, these models are backed by only very few reliable experiments, as it is challenging to maintain the required background pressure for free plume expansion in ground-based test facilities, and systematic experiments in orbit are expensive. The DLR high-vacuum plume test facility Göttingen for chemical thrusters (STG-CT) is a unique cryogenically pumped vacuum chamber, that is capable of maintaining a free plume expansion during (pulsed) operation of reaction control thrusters up to the 20 Newton thrust level. This is achieved by cooling the test section walls to just over four Kelvin. A standard test setup involves in-situ mass spectrometry, quartz crystal microbalances, material samples and a high-speed camera that monitors the nozzle exit. We report on recent test campaigns involving monopropellant hydrazine thrusters and first results of current contamination experiments with bipropellant thrusters.

Item URL in elib:https://elib.dlr.de/194585/
Document Type:Conference or Workshop Item (Speech)
Title:Recent experiments on thruster plume induced contamination
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Grabe, MartinUNSPECIFIEDhttps://orcid.org/0000-0003-0361-2734UNSPECIFIED
Date:September 2023
Journal or Publication Title:Contamination Control, Materials and Planetary Protection (CCMPP) Workshop
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
EditorsEmailEditor's ORCID iDORCID Put Code
Keywords:Thruster plume contamination
Event Title:Contamination Control, Materials and Planetary Protection (CCMPP) Workshop
Event Location:Washington, D.C., USA
Event Type:Workshop
Event Start Date:12 September 2023
Event End Date:14 September 2023
Organizer:NASA Goddard Spaceflight Center
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: Grabe, Dr. Martin
Deposited On:16 Nov 2023 12:16
Last Modified:24 Apr 2024 20:55

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