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An Orbit Control System for UWE-4 Using the High Fidelity Simulation Tool Orekit
Luleå tekniska universitet, Institutionen för system- och rymdteknik.
2017 (Engelska)Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
Abstract [en]

Cubesats are picosatellites that have a mass of less than 1.3kg and have a shape of acube. As a result of their low cost of development and launch, cubesats are gainingpopularity in industry and academia. These satellites are also a cost-efective way forspace technology demonstrations. University of Würzburg has a longstanding cubesatprogram started with the launch of UWE-1 in 2005. This was followed by UWE-2 andUWE-3. Several technologies were tested and validated using the UWE platform. Thelast mission UWE-3 has successfully tested an attitude control system.In the next mission, UWE-4 will demonstrate an orbit control system.

Being a picosatellite as small as this one (10 x 10 x 10cm 3 and 1kg) brings new challenges intodi↵erent aspects of satellite design, development, control and operation. The orbit con-trol of such a satellite is one of the problems that should be tackled. Being such a smallsatellite means having less propellant mass and much smaller thrusters than conventionalsatellites. These should be addressed in the orbit control.

UWE-4 will take advantage of four NanoFEEP thrusters, on one side. Because of theiraccuracy and functionality, these thrusters can be used to implement a continuous thrustsystem. They are also a good choice because of their low energy usage. This work startswith the preparation that was needed to implement a control system. Then explains thestate of the art for continuous thrust control systems. Implements two di↵erent methods,based on perfect control and discusses the outcome. It discuses the limiting factors, likefuel mass, available electrical energy and their e↵ect on the controller performance andconcludes with recommendation for the future researches.

Ort, förlag, år, upplaga, sidor
2017. , s. 196
Nyckelord [en]
Orbital mechanics, astrodynamics, small satellites, orbit control
Nationell ämneskategori
Rymd- och flygteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-61409OAI: oai:DiVA.org:ltu-61409DiVA, id: diva2:1064546
Utbildningsprogram
Rymdteknik, master
Handledare
Examinatorer
Projekt
UWE-4Tillgänglig från: 2017-01-17 Skapad: 2017-01-12 Senast uppdaterad: 2017-01-17Bibliografiskt granskad

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Azari, Pouyan
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Institutionen för system- och rymdteknik
Rymd- och flygteknik

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