Johannsson, Magni (2012) Optimization of Solid Rocket Grain Geometries. Masterarbeit, Kungliga Tekniska Högskolan/DLR-SART.
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Kurzfassung
Solid Rocket Motors (SRM) are employed in many space launch applications from the booster rockets on the now retired Space Shuttle to the new European launch vehicle Vega. Preliminary design of these complex three dimensional SRM, given certain requirements and limitations can be considered as an optimization process where a best geometrical solution is sought resulting in a desirable thrust profile. In this project, a derivate free direct search package titled NOMAD is employed together with the internally developed numerical burnback analysis tool SRP-GEO and ballistic solver SRP. An analytical model for the burnback analysis tool is also developed to take advantage of the support for surrogate functions within NOMAD. Due to the local nature of the optimizer, the results for complex geometries are shown to converge toward configurations different from the globally optimal geometries. Yet in most instances, the resulting calculated thrust profiles are shown to correlate well with the desired counterpart. This highlights the importance of carefully chosen initial values and boundaries while also emphasize the many possible solutions to a single problem.
elib-URL des Eintrags: | https://elib.dlr.de/77294/ | ||||||||
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Dokumentart: | Hochschulschrift (Masterarbeit) | ||||||||
Titel: | Optimization of Solid Rocket Grain Geometries | ||||||||
Autoren: |
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Datum: | 10 April 2012 | ||||||||
Referierte Publikation: | Nein | ||||||||
Open Access: | Nein | ||||||||
Seitenanzahl: | 61 | ||||||||
Status: | nicht veröffentlicht | ||||||||
Stichwörter: | SRP, Solid rocket motor, grain geometry, derivative free optimization, internal ballistics, NOMAD, solid rocket propellant, numerical burnback analysis, analytical burnback analysis, thrust history | ||||||||
Institution: | Kungliga Tekniska Högskolan/DLR-SART | ||||||||
Abteilung: | School of Electrical Engineering (EES), Space and Plasma Physics | ||||||||
HGF - Forschungsbereich: | Verkehr und Weltraum (alt) | ||||||||
HGF - Programm: | Weltraum (alt) | ||||||||
HGF - Programmthema: | W RP - Raumtransport | ||||||||
DLR - Schwerpunkt: | Weltraum | ||||||||
DLR - Forschungsgebiet: | W RP - Raumtransport | ||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | W - Raumfahrzeugsysteme - Systemanalyse Raumtransport (alt) | ||||||||
Standort: | Bremen | ||||||||
Institute & Einrichtungen: | Institut für Raumfahrtsysteme > Systemanalyse Raumtransport | ||||||||
Hinterlegt von: | Johannsson, Magni | ||||||||
Hinterlegt am: | 14 Feb 2013 10:49 | ||||||||
Letzte Änderung: | 14 Feb 2013 10:49 |
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