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High-End Concept to Launch Micro-Satellites into Low-Earth-Orbit based on Combination of a Two-Stage Rocket and a Railgun System

Bozic, Ognjan und Longo, José M.A. und Giese, Peter und Behrens, Jörg (2004) High-End Concept to Launch Micro-Satellites into Low-Earth-Orbit based on Combination of a Two-Stage Rocket and a Railgun System. Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer Verlag. (im Druck)

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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 conditions for the application of such a new system. This paper presents the main concept aspects of such propelled projectiles 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:Zeitschriftenbeitrag
Titel:High-End Concept to Launch Micro-Satellites into Low-Earth-Orbit based on Combination of a Two-Stage Rocket and a Railgun System
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Bozic, OgnjanNICHT SPEZIFIZIERT
Longo, José M.A.NICHT SPEZIFIZIERT
Giese, PeterNICHT SPEZIFIZIERT
Behrens, JörgEADS Space Transportation
Datum:2004
Erschienen in:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
Referierte Publikation:Ja
In ISI Web of Science:Ja
Verlag:Springer Verlag
Status:im Druck
Stichwörter:railgun, aerothermodynamics, hybrid rocket engine, orbital launcher
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 - numerische Verfahren (alt)
Standort: Braunschweig , Göttingen
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Raumfahrzeuge
Hinterlegt von: Claudia Grant
Hinterlegt am:20 Jan 2006
Letzte Änderung:27 Apr 2009 04:55

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