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2016 | Buch

Introduction to the Microsatellite Platform Kapitel lesen Erstes Kapitel lesen

The FLP Microsatellite Platform

Flight Operations Manual

herausgegeben von: Jens Eickhoff

Verlag: Springer International Publishing

Buchreihe : Springer Aerospace Technology

Enthalten in: Springer Professional "Wirtschaft+Technik" , Springer Professional "Technik" , Springer Professional "Wirtschaft"

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Über dieses Buch

This book represents the Flight Operations Manual for a reusable microsatellite platform – the “Future Low-cost Platform” (FLP), developed at the University of Stuttgart, Germany. It provides a basic insight on the onboard software functions, the core data handling system and on the power, communications, attitude control and thermal subsystem of the platform. Onboard failure detection, isolation and recovery functions are treated in detail. The platform is suited for satellites in the 50-150 kg class and is baseline of the microsatellite “Flying Laptop” from the University.

The book covers the essential information for ground operators to controls an FLP-based satellite applying international command and control standards (CCSDS and ECSS PUS).

Furthermore it provides an overview on the Flight Control Center in Stuttgart and on the link to the German Space Agency DLR Ground Station which is used for early mission phases. Flight procedure and mission planning chapters complement the book.

Inhaltsverzeichnis

Frontmatter
Chapter 1. Introduction to the Microsatellite Platform
Abstract
The book represents the Flight Operations Manual of the microsatellite platform. Before diving into the operations of the platform and its subsystems, into failure management and ground station functions, this chapter provides a brief overview on the Future Low-cost Platform (FLP). It explains the basic concept of the platform versus a complete satellite, it sketches out the first FLP prototype satellite “Flying Laptop” and explains which parts represent the re-usable platform. These platform elements can be taken over for other missions to significantly reduce the development effort.
Jens Eickhoff
Chapter 2. The FLP Platform Operability
Abstract
This chapter provides the basic overview on how an FLP-based spacecraft is operated. It explains the basic system modes and commanded transitions as well as fallback transitions. It explains the table-driven specification of mode-transitions. And it finally details all the command/control services which the platform provides—both standard PUS services, according to ECSS as well as defined private services. Command addressing and telemetry source definition via Virtual Channels and APIDs are also addressed.
Kai-Sören Klemich, Jens Eickhoff
Chapter 3. Data Handling and Control Concept
Abstract
This chapter addresses all the fact on the onboard software which an operator needs to know when controlling an FLP-based spacecraft from ground. The implemented onboard software objects tree is explained, from low level device handlers to the top level system object. Furthermore the command/reply flow through the onboard software and the onboard software object types are treated. The object modes and the specifics of controller objects are covered and many further details on object IDs, their addressing in commands and also on the onboard software dynamic architecture like tasks, cycle times and the polling sequence table and crash handling.
Ulrich Mohr, Bastian Bätz, Jens Eickhoff
Chapter 4. Core Data Handling Subsystem
Abstract
The first spacecraft subsystem—the Core Data Handling Subsystem (Core DHS)—is described in this chapter. As the FLP platform is based on the very innovative concept of a Combined Data and Power Management Infrastructure (CDPI) instead on the classic 3 unit design of onboard computer, power control and distribution unit and remote interface unit, this CDPI concept and its benefits are explained first. Then the chapter describes the stepwise boot process of an FLP-based spacecraft after its separation from the launcher. The last part comprises the onboard software elements and functions for control of the Core DHS subsystem.
Jens Eickhoff, Rouven Witt, Bastian Bätz
Chapter 5. Power Supply Subsystem
Abstract
The chapter contains first an overview on the power supply subsystem and discusses all the components. These are the solar panels including the deployment mechanism, the battery and in particular the Power Control and Distribution Unit (PCDU). The PCDU modes and its particular functions in the frame of the Combined Data and Power Management Infrastructure (CDPI) are explained. The last part comprises the onboard software elements and functions for control of the power supply subsystem. Additional tables are provided in the book’s annexes.
Kai-Sören Klemich, Bastian Bätz
Chapter 6. Platform Communication Subsystem
Abstract
The chapter covers the Telemetry, Tracking and Command (TTC) subsystem of the FLP platform. It provides the S-Band link for the platform control. It provides a brief overview on the receivers, transmitters and on the CCSDS decoder/encoder boards of the onboard computer which logically belong to the TTC subsystem. Technical parameters on the equipment and an example link budget are included in the book’s annexes. After explanation of the signal acquisition procedure the last part of the chapter comprises the onboard software elements and the on-board functionality for control of the platform communication subsystem.
Jens Eickhoff, Kai-Sören Klemich
Chapter 7. Attitude Control Subsystem
Abstract
The chapter provides an overview on the Attitude Control Subsystem (ACS). Then it treats all the ACS equipment as far as relevant for spacecraft operations, also providing the mounting vectors/matrices. The option of extension with a propulsion subsystem is sketched out at hand of the Airbus Astrobus-XS (Myriade) propulsion equipment. The last part comprises the onboard software elements and functions for control of the subsystem, treating all the device handlers, assemblies and the ACS controller itself. This includes all the ACS modes and mode transitions. An example orbit analysis is included in the book’s annexes.
Oliver Zeile, Ulrich Mohr, Bastian Bätz, Nico Bucher
Chapter 8. Thermal Control Subsystem
Abstract
The chapter provides an overview on the platform thermal control subsystem. It explains the placement of thermal equipment over the diverse satellite compartments at hand of an example FLP-based spacecraft. It explains the logic of component operational and non operational limits, the allocated sensors, sensor redundancies, allocated compartment heaters and heater redundancies. The last part comprises the onboard software elements and functions for control of the thermal subsystem.
Fabian Steinmetz, Sebastian Keil
Chapter 9. Payload Control Subsystem
Abstract
The payloads themselves are not part of the satellite platform. Nevertheless the options to couple payloads and payload module equipment like a mass memory unit and payload data transmission equipment to the platform computer are relevant for the Flight Operations Manual. Various architectures are explained here. The technical solution for the first FLP-based satellite of the Institute of Space Systems in Stuttgart is covered in a bit more detail. The second part treats more advanced SpaceWire network centric architectures as proposed by 4Links and Airbus DS.
Philipp Hagel, Paul Walker, Jens Eickhoff
Chapter 10. Failure Detection, Isolation and Recovery Concept
Abstract
This chapter is one of the most complex ones and covers the platform Failure Detection, Isolation and Recovery (FDIR). It starts with explaining the FDIR concept and the system redundancies. Next FDIR Events, their flow in the onboard software and their management are explained. The spacecraft reconfiguration functionalities are treated in detail, in particular the reconfiguration of the onboard computer elements and the power subsystem as well as the mode fallback hierarchy for the diverse failure types. The FDIR specifics for each subsystem are explained and also the handling of device hardware failures. Software constants and FDIR limits are provided in the book’s annexes.
Rouven Witt, Jens Eickhoff
Chapter 11. Satellite Mission Phases and Planning
Abstract
The chapter covers the flow of the work steps over the diverse mission phases, from mounting to a launcher, the launch, spacecraft power up, the first contact initiation until end of life deorbiting.
Jens Eickhoff, Michael Lengowski, Kai-Sören Klemich
Chapter 12. Stuttgart Mission Control Infrastructure
Abstract
The chapter provides a detailed insight on the mission control infrastructure installed at the University of Stuttgart, Germany, including the antenna system and the science data signal chain.
Jens Eickhoff, Nico Bucher, Maximilian Böttcher, Charles Thibaut, Dougie Johnman, Bryan Tatman
Chapter 13. Stuttgart/DLR Infrastructure for LEOP
Abstract
The chapter explains the link between the Stuttgart Mission Control Center and the DLR/GSOC antenna station in Weilheim, Germany, which the IRS is permitted to use for the Launch Phase and the Commissioning Phase of the first FLP-based spacecraft. The chapter is complementary to Chap. 12 and describes the technical details of the TC/TM routing from Stuttgart to Weilheim and the TM routing backwards as well as the RF infrastructure and antenna in Weilheim. It also covers the operational workflow between Stuttgart and Weilheim during these early flight phases of the satellite.
Peter Willburger, Klaus Wiedemann, Rolf Kozlowski, Marcin Gnat, Ciprian Furtuna, Jens Eickhoff, Nico Bucher
Chapter 14. Earth Observation Mission Planning
Abstract
The chapter explains the mission planning for an FLP-based satellite using SCOS and the Manufacturing and Operations Information System (MOIS). Mission planning considers the orbital events like begin/end of eclipse, begin/end of ground station visibility and begin/end of observation target visibility.
Kai-Sören Klemich, Gianluca Cerrone, Wolfgang Heinen
Chapter 15. Flight Procedures
Abstract
This chapter describes how flight procedures for an FLP-based satellite are defined—again based on the ground infrastructure subsystems SCOS and MOIS. Procedure types and the naming conventions are provided as well as a detailed example. A table of the predefined flight procedures for the satellite platform including a short description is provided in the book’s annexes.
Kai-Sören Klemich, Jens Eickhoff
Chapter 16. FLP Mission Information Database
Abstract
The chapter provides an introductory overview on the Mission Information Database which is the underlying foundation of the Mission Control System. The definition of telecommand packets, telemetry packets, their parameters and more details are covered. The lists of FLP telecommand packets, telemetry packets and Event telemetry packets are provided in the book’s annexes.
Kai-Sören Klemich, Jens Eickhoff
Chapter 17. Annexes and Data Sheets
Abstract
The chapter comprises tables, listings and figures complementing the information in the previous chapters. The topics cover the areas cited in the keyword list.
Jens Eickhoff
Backmatter
Metadaten
Titel
The FLP Microsatellite Platform
herausgegeben von
Jens Eickhoff
Copyright-Jahr
2016
Electronic ISBN
978-3-319-23503-5
Print ISBN
978-3-319-23502-8
DOI
https://doi.org/10.1007/978-3-319-23503-5

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