Agency: European Commission | Branch: FP7 | Program: CP-FP | Phase: AAT.2008.6.2.1.;AAT.2008.6.2.2. | Award Amount: 7.23M | Year: 2009
The current project aims at the investigation and development of technologies and steps necessary for approaches to conquer the grey zone between aeronautics and space in Europe, and thus to set the foundation of a new paradigm for transportation in the long term. The underlying concepts considered are a) a European space plane based on an airplane launch approach to advance European know how in this area, based essentially on a ballistic flight experience using hybrid propulsion, and b) the same space plane envisioned to evolve into suborbital point-to-point long-distance transport in very short times by using high-energy propulsion. An alternative, vertically starting two-stage rocket space vehicle system concept is used to identify technologies required for suborbital ultra-fast transportation. The concepts will be addressed separately and in relation to each other as well as with those considered in other EC projects, exploiting similarities and synergies wherever possible. The concepts can be classified with near term and very long term realisation capabilities, and will be evaluated according to the maturity of underlying technology, inherent risk, sustained operations, and cost. All concepts and technologies will be considered with respect to environmental issues. Some activities concern the leagal issues and those of suitable space ports. Due to the recent agreement with Virgin Galactic, it is quite natural to consider the ESRANGE facility in Sweden an excellent candidate for a starting place of experimental high-altitude high-speed flights.
Scheuerpflug F.,German Aerospace Center |
Kallenbach A.,TU Munich |
Cremaschi F.,Astos Solutions GmbH
Journal of Spacecraft and Rockets | Year: 2012
The mission architecture of SHEFEX II features a two-stage solid propellant sounding rocket vehicle on a suppressed trajectory, which is induced by a cold gas pointing maneuver of the vehicle before second stage ignition. The impact point is subject to a 3-? dispersion of roughly?110 kmin downrange and-90 kmin crossrange, which makes a recovery of the vehicle particularly difficult, as the whole impact area is located off shore and the vehicle needs to be recovered by ship. As the major part to dispersion is contributed during the atmospheric ascent of the vehicle, a control algorithm is developed that considers the actual deviation from the nominal trajectory after atmospheric exit and recommends a vehicle pointing that corrects for this deviation. The analytic control algorithm is found by linear/quadratic approximation of the impact point sensitivity towards the deviations after atmospheric exit and to the pointing angles. The effectiveness of the algorithm is tested by implementing it in a full six-degree-offreedom simulation and applying dispersion factors in a Monte Carlo simulation. The result is a reduction of the impact point dispersion area by about 78%. Copyright © 2012 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
Agency: European Commission | Branch: FP7 | Program: CP | Phase: SPA-2007-2.2-01;SPA-2007-2.2-02 | Award Amount: 5.36M | Year: 2008
The main objective of the HiPER project is to initiate technological and programmatic consolidation in the development of innovative electric propulsion technologies (and of the related power generation) to fulfill future European space transportation needs. The objective will be pursued by conceiving and substantiating a long term vision for European space transportation and exploration, considering realistic developments in the state-of-the-art, and by performing basic research and proof-of-concept experiments on the key technologies identified by such a vision.
Agency: European Commission | Branch: FP7 | Program: MC-ITN | Phase: FP7-PEOPLE-2010-ITN | Award Amount: 5.70M | Year: 2011
Optimisation-based design of control systems is concerned with determination of control strategies for complex, dynamical systems, to optimise some measures of best performance. It has the potential for applications to a wide range of fields, including aerospace, chemical processing, transportation systems and resource economics. The multi-partner initial training network SADCO aims at: Training young researchers and future scientific leaders in the field of control theory with emphasis on two major themes sensitivity of optimal strategies to changes in the model specifications, and deterministic controller design; Advancing the theory and developing new numerical methods; Conveying fundamental scientific contributions within European industrial sectors. In order to achieve these objectives, SADCO establishes a collaborative research and training network of eleven full partners from both the academic and industrial sectors, and gathers participants with expertise in complementary disciplines in mathematics and engineering. The network also offers a complete range of theoretical, practical and complementary training. SADCO will work together with the young researchers to develop and implement effective training plans tailored to each individual requirements. Multi-disciplinary training based on the integrated scientific programme, secondements, regular meetings, active networking, will ensure the success of this project. The development of new clean technologies in power, transportation and other domains is a major opportunity for EU industries. The proposed research programme will help place EU universities in the forefront of Optimal Control, a field of mathematics that supports these technologies. The training programme, based on institutions covering the principal areas of the field, will provide a new generation of young mathematicians and engineers with broad skills in Optimal Control, which are not readily acquired at one institution alone.
Mehlem K.,Sonnemveg 22 |
Wiegand A.,Astos Solutions GmbH
2010 Asia-Pacific Symposium on Electromagnetic Compatibility, APEMC 2010 | Year: 2010
Stringent magnetostatic cleanliness programs are required for interplanetary scientific spacecraft like Ulysses, Cluster, Double Star, Cassini, Rosetta many others, which carry sensitive magnetometers operating in a low interplanetary field environment. Due to the strong Earth field and the limited precision of coil facilities it is impossible to verify the stringent magnetic cleanliness specification (typically 0.1-1 nT) by direct measurements at the specification point. The paper describes the use of Multiple Dipole Models which generates precise far-field estimates. The model parameters of the so-called MDMs are identified on the basis of near-field measurements. The method, developed by K. Mehlem in the early eighties, is implemented in the GAMAG software. The paper mentions some historical aspects and describes in more detail the NLP solver used, as well as some inherent identification problems which are due to data sparsity and to parameter constraints. The characteristics of the software are presented, in particular the efficient combination of deterministic and stochastic solver strategies, the statistical refinement of far-field estimates, the capabilities to optimize compensation MDMs (magnets or coils) for multiple far-field points, and finally the ease of use. © 2010 IEEE.
Reddy V.,University of North Dakota |
Reddy V.,Max Planck Institute for Solar System Research |
Nathues A.,Max Planck Institute for Solar System Research |
Gaffey M.J.,Astos Solutions GmbH |
Schaeff S.,Astos Solutions GmbH
Planetary and Space Science | Year: 2011
In-situ investigation of asteroids is the next logical step in understanding their exact surface mineralogy, petrology, elemental abundances, particle size distribution, internal structure, and collisional evolution. Near-Earth asteroids (NEAs) provide us with ample opportunities for in-situ scientific exploration with lower Δv requirements and subsequently lower costs than their main belt counterparts. The ASTEX mission concept aims at surface characterization of two compositionally diverse NEAs, one with primitive and the other with a strong thermally evolved surface mineralogy. Here we present the first results of our ground-based characterization of potential ASTEX mission targets using the SpeX instrument on the NASA IRTF. Of the four potential targets we characterized, two (1991 JW and 1998 PA) have compositions similar to ordinary chondrite mineralogy. The other two targets (1994 CC and 1999 TA10) are thermally evolved objects with igneous formation histories. While 1994 CC is a triplet system and thus very challenging to orbit the V-type NEA, 1999 TA10 is the most interesting scientific ASTEX target identified so far. © 2011 Elsevier Ltd. All rights reserved.
Sippel M.,Launcher |
Van Foreest A.,Launcher |
Bauer C.,Launcher |
Cremaschi F.,Astos Solutions GmbH
17th AIAA International Space Planes and Hypersonic Systems and Technologies Conference 2011 | Year: 2011
DLR's launcher systems analysis division has proposed a visionary, extremely fast passenger transportation concept reaching the edges of space based on rocket propulsion. The paper describes the recent technical progress achieved in the SpaceLiner configuration. The revolutionary ultrafast transport is now under investigation in the EU-funded study FAST20XX (Future high-Altitude high-Speed Transport 20XX) set off in December 2009. The focus of the paper is on all system aspects of the preliminary design including its flight performance impact on design choices. A major new result is the replacement of the original skipping trajectory by a smooth glide obtained in system optimizations. © 2011 by DLR-SART.
Wiegand A.,Astos Solutions GmbH |
Weikert S.,Astos Solutions GmbH
Proceedings of the International Astronautical Congress, IAC | Year: 2012
The combination of multi-disciplinary optimization with mission and subsystem analysis and design is nowadays key to successful and low cost design for space missions. In particular, Mission Vehicle Management (MVM) plays a key role in the multi-disciplinary optimization design process. However, despite the improvements in computational speed, mathematical algorithms and software engineering, still the subsystem design dependencies are huge and the market expectations are growing. This paper presents an innovative approach, how the European space industry and ESA meets this challenge. The multi-disciplinary design environment proposed in this paper is based on the newly ASTOS Guidance, Navigation, and Control (GNC) design software framework, which combines several optimization methods and propagators with a flexible environment for the definition of a complete space scenario, space vehicle, and its corresponding mission vehicle management. The ASTOS software suite presented here is composed of powerful trajectory and guidance optimizers, a full GNC system design, and the capability to realize multi-disciplinary design optimization for MVM problems. Following the lifecycle of space systems, the ASTOS software suite allows step by step refinement of the system models including switching from rigid to flexible body dynamics or from 3-dof open loop guidance to 6-dof closed loop control, etc. The new ASTOS version 8.0 comprises a fully integrated working environment, which allows the numerical optimization of vehicle and control parameters, optimal trajectory analysis and GNC analysis all at once. The ASTOS analysis functions can be used in a coupled mode, which allows the detailed analysis of complex scenarios like space robotic missions as well. This paper further describes the engineering design and development tasks and the corresponding capabilities from Phase 0 till Phase C of the ASTOS suite. Furthermore, the ASTOS software framework is showcased by presenting the design process of 3 example cases: A launch vehicle, a space robotics mission, and a low thrust propulsion mission.©2012 by the International Astronautical Federation.
Computer software used for the simulation, optimization, and visualization of parameters for the control of static and dynamic systems, namely, aeronautical systems, astronautical systems, robotic systems, mechanical systems, automotive systems, medical systems, and bio-mechanical systems. Providing of training for the use of optimization, simulation, analysis and visualization software. Scientific research; scientific design in the fields of aeronautics, astronautics, automotive technology, bio-engineering, and robotics; technology consultation in the fields of aeronautics, astronautics, automotive technology, bio-engineering, robotics, and medical research, namely, the application of parameter and control optimization to medical systems; industrial research in the fields of aeronautics, astronautics, automotive technology, bio-engineering, and robotics; design and development of computer hardware and software.
Astos Solutions GmbH | Date: 2010-08-03
Computer software used for the simulation, optimization, and visualization of parameters for the control of static and dynamic systems, namely, aeronautical systems, astronautical systems, robotic systems, mechanical systems, automotive systems, medical systems, and bio-mechanical systems. Providing of training for the use of optimization , simulation , analysis and visualization software. Scientific research; scientific design in the fields of aeronautics, astronautics, automotive technology, bio-engineering, and robotics; technology consultation in the fields of aeronautics, astronautics, automotive technology, bio-engineering, robotics, and medical research, namely the application of parameter and control optimization to medical systems; industrial research in the fields of aeronautics, astronautics, automotive technology, bio-engineering, and robotics; design and development of computer hardware and software.