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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. and Longo, J.M.A. and Giese, P. and 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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Abstract

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.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2005,
Title:High-End Concept Based On Hypersonic Two-Stage Rocket and Electromagnetic Railgun To Launch Micro-Satellites Into Low-Earth-Orbit
Authors:
AuthorsInstitution or Email of Authors
Bozic, O.UNSPECIFIED
Longo, J.M.A.UNSPECIFIED
Giese, P.UNSPECIFIED
Behrens, J.EADS Bremen
Date:2004
Status:Published
Keywords:micro-satellite, two-stage-rocket, railgun, rocket-engines, aero/thermo-dynamic, mass optimization
Event Title:5th European Symposium on Aerothermodynamics for Space Vehicles, Köln (de), 08.11.11.2004
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):W - Grundlagen Raumtransport - Anlagen und Messtechnik (old)
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: Claudia Grant
Deposited On:31 Jan 2006
Last Modified:14 Jan 2010 19:49

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