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dc.contributorGutiérrez Cabello, Jordi
dc.contributorTristancho Martínez, Joshua
dc.contributor.authorRuizhi, Yuan
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física Aplicada
dc.date.accessioned2011-09-23T14:26:59Z
dc.date.available2011-09-23T14:26:59Z
dc.date.issued2011-07-26
dc.identifier.urihttp://hdl.handle.net/2099.1/12940
dc.language.isoeng
dc.publisherUniversitat Politècnica de Catalunya
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Aeronàutica i espai::Aeronaus::Coets
dc.subjectÀrees temàtiques de la UPC::Aeronàutica i espai::Astronàutica
dc.subject.lcshArtificial satellites
dc.subject.lcshRockets (Aeronautics)
dc.subject.otherRockets
dc.subject.otherPropulsion
dc.subject.otherControl
dc.subject.otherStability
dc.subject.otherFemto-satellite
dc.subject.otherData-based parameter-varying model
dc.subject.otherFlutter prediction
dc.subject.otherMini-launcher
dc.subject.otherWind tunnel
dc.titleStudy and implementation of the stability and control system of a mini-launcher
dc.typeMaster thesis
dc.subject.lemacSatèl·lits artificials
dc.subject.lemacCoets (Aeronàutica)
dc.rights.accessOpen Access
dc.date.updated2011-07-28T06:11:12Z
dc.audience.educationlevelEstudis de primer/segon cicle
dc.audience.mediatorEscola d'Enginyeria de Telecomunicació i Aeroespacial de Castelldefels
dc.provenanceIn this Master Thesis Work (TFM), the proposal is to study some aspects of the stability, like flutter effects, over a small space launcher (less than 100 kg including propellant and payload). This mini-launcher is called Wiki-Launcher and it is part of a space mission done by the Wikisat team. This team is participating in the N-Prize competition that consists of designing a femto-satellite (Less than 20 grams) and injecting it into orbit by a home-made launcher that costs less than 1,000 Pounds Sterline before September, 2012. Flutter is a kind of self-excited aeroelastic unstable phenomenon where the safety of the flight vehicles may be threatened. Flutter can be catastrophic once it occurs and must be avoided. Thus it is mandatory to verify the flutter boundary of the flight launcher by performing wind-tunnel and flight tests, which always consume plenty of time and money. Efficient and effective flutter prediction methods are in demand so as to accelerate the process of tests, as well as ensuring the safety during the tests. The flutter boundary of a mini-launcher is predicted using the data-based parametervarying model. The core algorithms are the well-developed linear fraction transform (LFT) and μ-analysis. Compared with the former model-based μ method, this approach requires less model information and is easier to handle. In this thesis, we try to check if this method is able to be implemented in a low cost way for the Wiki-Launcher that could be extended to other larger launchers.


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