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Ethernet for Sounding Rockets

Wittkamp, Markus and Kirchhartz, Rainer (2017) Ethernet for Sounding Rockets. 23rd ESA Symposium on European Rocket and Balloon Programmes and related Research, 11.-15. Juni 2017, Visby, Schweden.

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Abstract

The standard interface for experiment computers for forwarding low to medium data rates to the Service Module on a Sounding Rocket payload is still the asynchronous UART protocol on a RS422 physical layer. This interface is well known, easy to implement and debug. However, it is limited in speed and signal integrity when it comes to high bit rates. Further, the UART protocol cannot be routed without additional layers of communication, since it was designed to serve as a point to point protocol. A common interface to overcome these problems is Ethernet together with the TCP/IP family of protocols. Some experimenters are already using this stack in their laboratory. This paper presents a communication system which provides Ethernet on-board a Sounding Rocket to provide the flexibility of this standard system to the experiments. The architecture is based on a pair of gateways to adapt to the existing TM/TC systems without modifying them. The system requires transparent octet-streams on both TM and TC. It replaces the Ethernet frame and forwards data of the IP communication layer. Due to the nature of IP based communication, the Messages can be routed within networks and Firewalls might be used at the Gateways on both ends to protect the TM/TC connections from unwanted packets. Within the paper we describe the details of the architecture, show an reference implementation of the two Gateways and results of tests during the MAIUS flight.

Item URL in elib:https://elib.dlr.de/116272/
Document Type:Conference or Workshop Item (Speech)
Title:Ethernet for Sounding Rockets
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wittkamp, MarkusMarkus.Wittkamp (at) dlr.deUNSPECIFIED
Kirchhartz, Rainerrainer.kirchhartz (at) dlr.deUNSPECIFIED
Date:2017
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Ethernet Gateway Sounding Rocket TM/TC MAIUS
Event Title:23rd ESA Symposium on European Rocket and Balloon Programmes and related Research
Event Location:Visby, Schweden
Event Type:international Conference
Event Dates:11.-15. Juni 2017
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Vorhaben Mobile Raketenbasis (MORABA), MORABA Aktivitäten
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training > Mobile Rocket Base
Deposited By: Wittkamp, Markus
Deposited On:04 Dec 2017 09:38
Last Modified:31 Jul 2019 20:13

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