DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Battery Operations for the TET–1 Spacecraft

Balan, Arvind Kumar and Müller, Kay (2014) Battery Operations for the TET–1 Spacecraft. In: SpaceOps 2013 - 13th International Conference on Space Operations. SpaceOps 2014 - 13th International Conference on Space Operations, 2014-05-05 - 2014-05-09, Pasadena, California, USA.

[img] PDF


The TET–1 satellite serves as a technology demonstrator within the On-Orbit Verification (OOV) program with the goal of providing German space companies and research institutions with the opportunity to test their equipment on actual spacecraft. It was launched on July 22, 2012, by a Russian Soyuz/Fregat into a Sun-synchronous Orbit with an LTAN of 11:27 UTC. The satellite is powered by nickel-hydrogen batteries during eclipse. The operations team became aware of several issues shortly before and after the launch which created some challenges for battery operation. Some battery cells had undergone reversal prior to launch which seems to have created an imbalance between them. Also, the overall temperature within the satellite and that of the batteries turned out to be higher than predicted and the battery voltage slightly exceeded the limit for payload operations. This paper describes in detail the circumstances in which these issues arose, wherever possible their causes and how they were dealt with. The capacity of the TET–1 spacecraft’s batteries is found to have increased from 12 Ah to about 14 Ah without any significant increase in temperature. Data gained at a later point in time also suggest a positive effect of the reconditioning.

Item URL in elib:https://elib.dlr.de/89725/
Document Type:Conference or Workshop Item (Lecture)
Title:Battery Operations for the TET–1 Spacecraft
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:5 May 2014
Journal or Publication Title:SpaceOps 2013 - 13th International Conference on Space Operations
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:TET-1, Nickel-Hydrogen Battery, Satellite operations, Power and Thermal System, Temperature, Low earth orbit
Event Title:SpaceOps 2014 - 13th International Conference on Space Operations
Event Location:Pasadena, California, USA
Event Type:international Conference
Event Start Date:5 May 2014
Event End Date:9 May 2014
Organizer:NASA Jet Propulsion Laboratory
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space System Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Space System Technology
DLR - Research theme (Project):R - TET OOV Support (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training > Mission Operations
Deposited By: Balan, Arvind Kumar
Deposited On:09 Jul 2014 09:28
Last Modified:24 Apr 2024 19:55

Repository Staff Only: item control page

Help & Contact
electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.