Preliminary Structural Design of a Tanker Spacecraft

Τρίφα, Παναγιώτης; Trifa, Panagiotis

dc.contributor.author	Τρίφα, Παναγιώτης	el
dc.contributor.author	Trifa, Panagiotis	en
dc.date.accessioned	2020-01-17T09:14:25Z
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/49659
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.17357
dc.description	Εθνικό Μετσόβιο Πολυτεχνείο--Μεταπτυχιακή Εργασία. Διεπιστημονικό-Διατμηματικό Πρόγραμμα Μεταπτυχιακών Σπουδών (Δ.Π.Μ.Σ.) “Υπολογιστική Μηχανική”	el
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ελλάδα	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/gr/	*
dc.subject	Finite Element Method	en
dc.subject	Structural Design	en
dc.subject	Spacecraft Design	en
dc.subject	Stress Analysis	en
dc.subject	Μέθοδος Πεπερασμένων Στοιχείων	el
dc.subject	Δομικός Σχεδιασμός	el
dc.subject	Σχεδιασμός Αεροδιαστημικών Οχημάτων	el
dc.subject	Ανάλυση Τάσεων	el
dc.title	Preliminary Structural Design of a Tanker Spacecraft	en
heal.type	masterThesis
heal.classification	Computational Mechanics	en
heal.dateAvailable	2021-01-16T22:00:00Z
heal.language	en
heal.access	embargo
heal.recordProvider	ntua	el
heal.publicationDate	2019-06-21
heal.abstract	In the past two decades, some of the most extraordinary breakthroughs in space exploration have emphasized the growing importance of on-orbit servicing. The current challenges concerning the space sector have moved beyond simply launching complex systems. Consequently, the aerospace industry faces the need of exploiting the flight systems already launched, constructing structures in situ to assist new scientific projects while providing services to systems that reliably and cost-effectively support the next steps in space exploration. Being inspired from the satellite’s life extension concept and focusing specifically on the on-orbit refueling applications, this thesis suggests the implementation of a tanker spacecraft in order to satisfy this specific need and delves into the conceptual and structural design of a structure of this particular concept. The attention of this work is mainly focused on the spacecraft’s primary structure and its payload. The design proceeds by performing separate sizing procedures for the above structures, examining both static and dynamic environments. The computation of the structural response of the tanker spacecraft is carried out through finite element analysis, considering the most critical load cases, which correspond to the most severe environments that both structures will encounter throughout their operational lifetime. The design process incorporates multiple types of finite element analysis, such as linear static, linear buckling and nonlinear elastoplastic for the preliminary sizing of both structural modules. Afterwards, the design proceeds with modal analysis and is finalized via sinusoidal vibration analysis for the low operational frequency range of the spacecraft by suggesting proper design modifications and finalizing the sizing procedure. In conclusion, the analysis provides the structural design process with encouraging results which satisfy simultaneously mass, strength and stiffness requirements, preventing the proposed structure from the most common material failures, structural instability or dynamic coupling and resonance effects.	en
heal.advisorName	Παπαδόπουλος, Βυσσαρίων	el
heal.committeeMemberName	Σπυρόπουλος, Κωνσταντίνος	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Πολιτικών Μηχανικών	el
heal.academicPublisherID	ntua
heal.numberOfPages	88 σ.	el
heal.fullTextAvailability	true