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High-End Concept Based On Hypersonic Two-Stage Rocket and Electromagnetic Railgun To Launch Micro-Satellites Into Low-Earth-Orbit

Bozic, O. und Longo, J.M.A. und Giese, P. und Behrens, J. (2004) High-End Concept Based On Hypersonic Two-Stage Rocket and Electromagnetic Railgun To Launch Micro-Satellites Into Low-Earth-Orbit. 5th European Symposium on Aerothermodynamics for Space Vehicles, Köln (de), 08.11.11.2004.

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Kurzfassung

The electromagnetic railgun technology appears to be an interesting alternative to launch small payloads into Low Earth Orbit (LEO), as this may introduce lower launch costs. A high-end solution, based upon present state of the art technology, has been investigated to derive the technical boundary conditions for the application of such a new system. This paper presents the main concept and the design aspects of such propelled projectile with special emphasis on flight mechanics, aero-/thermodynamics, materials and propulsion characteristics. Launch angles and trajectory optimization analyses are carried out by means of 3 degree of freedom simulations (3DOF). The aerodynamic form of the projectile is optimized to provoke minimum drag and low heat loads. The surface temperature distribution for critical zones is calculated with DLR developed Navier-Stokes codes TAU, HOTSOSE, whereas the engineering tool HF3T is used for time dependent calculations of heat loads and temperatures on project surface and inner structures. Furthermore, competing propulsions systems are considered for the rocket engines of both stages. The structural mass is analysed mostly on the basis of carbon fibre reinforced materials as well as classical aerospace metallic materials. Finally, this paper gives a critical overview of the technical feasibility and cost of small rockets for such missions.

Dokumentart:Konferenzbeitrag (Paper)
Zusätzliche Informationen: LIDO-Berichtsjahr=2005,
Titel:High-End Concept Based On Hypersonic Two-Stage Rocket and Electromagnetic Railgun To Launch Micro-Satellites Into Low-Earth-Orbit
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Bozic, O.NICHT SPEZIFIZIERT
Longo, J.M.A.NICHT SPEZIFIZIERT
Giese, P.NICHT SPEZIFIZIERT
Behrens, J.EADS Bremen
Datum:2004
Status:veröffentlicht
Stichwörter:micro-satellite, two-stage-rocket, railgun, rocket-engines, aero/thermo-dynamic, mass optimization
Veranstaltungstitel:5th European Symposium on Aerothermodynamics for Space Vehicles, Köln (de), 08.11.11.2004
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 - Grundlagen Raumtransport - Anlagen und Messtechnik (alt)
Standort: Köln-Porz , Braunschweig , Göttingen
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik
Hinterlegt von: Claudia Grant
Hinterlegt am:31 Jan 2006
Letzte Änderung:14 Jan 2010 19:49

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