Dokument-ID Dokumenttyp Verfasser/Autoren Herausgeber Haupttitel Abstract Auflage Verlagsort Verlag Erscheinungsjahr Seitenzahl Schriftenreihe Titel Schriftenreihe Bandzahl ISBN Quelle der Hochschulschrift Konferenzname Bemerkung Quelle:Titel Quelle:Jahrgang Quelle:Heftnummer Quelle:Erste Seite Quelle:Letzte Seite URN DOI Zugriffsart Link Abteilungen OPUS4-3525 Wissenschaftlicher Artikel Dachwald, Bernd, dachwald@fh-aachen.de; McDonald, Malcolm, ; McInnes, Colin R., ; Mengali, Giovanni, Impact of Optical Degradation on Solar Sail Mission Performance 2007 9 Journal of Spacecraft and Rockets. 44 (2007), H. 4 0022-4650 2. ISSN: 1533-6794 740 749 campus http://dx.doi.org/10.2514/1.21432 Fachbereich Luft- und Raumfahrttechnik OPUS4-3586 Wissenschaftlicher Artikel Dachwald, Bernd, dachwald@fh-aachen.de; Seboldt, Wolfgang, ; Macdonald, Malcolm, ; Mengali, Giovanni, ; Quatra, Alessandro A., ; McInnes, Colin R., ; Rios-Reyes, Leonel, ; Scheerers, Daniel J., ; Wie, Bong, ; Görlich, Marianne, ; Lura, Franz, ; Diedrich, Benjamin, ; Baturkin, Volodymyr, ; Coverstone, Victoria L., ; Leipold, Manfred, ; Garbe, Gregory P., Potential Solar Sail Degradation Effects on Trajectory and Attitude Control Reston, Va. American Institute of Aeronautics and Astronautics 2005 2 CD-ROMs AIAA Guidance, Navigation and Control Conference and Exhibit - AIAA Modeling and Simulation Technologies Conference and Exhibit - AIAA Atmospheric Flight Mechanics Conference and Exhibit : [San Francisco, California, 15 - 18 August 2005 ; papers]. - (AIAA meeting papers on disc ; [10.]2005,16-17) 1-56347-765-3 American Institute of Aeronautics and Astronautics ; AIAA Guidance, Navigation, and Control Conference and Exhibit <2005, San Francisco, Calif.> ; AIAA paper number: AIAA-2006-6172 Link "https://arc.aiaa.org/doi/book/10.2514/MGNC05" am 15.07.2022 nachgetragen Behr weltweit http://www.spacesailing.net/paper/200508_SanFrancisco_Dachwald+.pdf Fachbereich Luft- und Raumfahrttechnik OPUS4-3579 Wissenschaftlicher Artikel Dachwald, Bernd, dachwald@fh-aachen.de; Baturkin, Volodymyr, ; Coverstone, Victoria L., ; Dietrich, Benjamin, ; Garbe, Gregory P., ; Görlich, Marianne, ; Leipold, Manfred, ; Lura, Franz, ; Macdonald, Malcolm, ; McInnes, Colin R., ; Mengali, Giovanni, ; Quatra, Alessandro A., ; Rios-Reyes, Leonel, ; Scheeres, Daniel J., ; Seboldt, Wolfgang, ; Wie, Bong, Potential Effects of Optical Solar Sail Degradation on Interplanetary Trajectory Design San Diego, Calif. Univelt 2006 XXIII S.. S. 1860 - 2854. : Ill., graph. Darst. Astrodynamics 2005 : proceedings of the AAS/AIAA astrodynamics conference held August 7 - 11, 2005, South Lake Tahoe, California / ed. by Bobby G. Williams. - Pt. 3. - (Advances in the astronautical sciences ; 123,3) 0-87703-527-X Astrodynamics Conference <2005, South Lake Tahoe, Calif.> ; American Astronautical Society ; Number: AAS-05-413 2569 2592 Fachbereich Luft- und Raumfahrttechnik OPUS4-3565 Wissenschaftlicher Artikel Dachwald, Bernd, dachwald@fh-aachen.de; MacDonald, Malcolm, ; McInnes, Colin R., Heliocentric Solar Sail Orbit Transfers with Locally Optimal Control Laws / Malcolm Macdonald ; Colin McInnes ; Bernd Dachwald 2007 3 Journal of Spacecraft and Rockets. 44 (2007), H. 1 0022-4650 273 276 campus http://dx.doi.org/10.2514/1.17297 Fachbereich Luft- und Raumfahrttechnik OPUS4-6374 Teil eines Buches Dachwald, Bernd, dachwald@fh-aachen.de; Boehnhardt, Herrmann, ; Broj, Ulrich, ; Geppert, Ulrich R. M. E., ; Grundmann, Jan-Thimo, ; Seboldt, Wolfgang, ; Seefeldt, Patric, ; Spietz, Peter, ; Johnson, Les, ; Kührt, Ekkehard, ; Mottola, Stefano, ; Macdonald, Malcolm, ; McInnes, Colin R., ; Vasile, Massimiliano, ; Reinhard, Ruedeger, Gossamer roadmap technology reference study for a multiple NEO Rendezvous Mission A technology reference study for a multiple near-Earth object (NEO) rendezvous mission with solar sailcraft is currently carried out by the authors of this paper. The investigated mission builds on previous concepts, but adopts a strong micro-spacecraft philosophy based on the DLR/ESA Gossamer technology. The main scientific objective of the mission is to explore the diversity of NEOs. After direct interplanetary insertion, the solar sailcraft should—within less than 10 years—rendezvous three NEOs that are not only scientifically interesting, but also from the point of human spaceight and planetary defense. In this paper, the objectives of the study are outlined and a preliminary potential mission profile is presented. Berlin [u.a.] Springer 2014 15 Advances in solar sailing 978-3-642-34906-5 (Print) ; 978-3-642-34907-2 (E-Book) 211 226 bezahl http://dx.doi.org/10.1007/978-3-642-34907-2_15 Fachbereich Luft- und Raumfahrttechnik OPUS4-6375 Teil eines Buches McInnes, Colin R., ; Bothmer, Volker, ; Dachwald, Bernd, dachwald@fh-aachen.de; Geppert, Ulrich R. M. E., ; Heiligers, Jeannette, ; Hilgers, Alan, ; Johnson, Les, ; Macdonald, Malcolm, ; Reinhard, Ruedeger, ; Seboldt, Wolfgang, ; Spietz, Peter, Gossamer roadmap technology reference study for a Sub-L1 Space Weather Mission A technology reference study for a displaced Lagrange point space weather mission is presented. The mission builds on previous concepts, but adopts a strong micro-spacecraft philosophy to deliver a low mass platform and payload which can be accommodated on the DLR/ESA Gossamer-3 technology demonstration mission. A direct escape from Geostationary Transfer Orbit is assumed with the sail deployed after the escape burn. The use of a miniaturized, low mass platform and payload then allows the Gossamer-3 solar sail to potentially double the warning time of space weather events. The mission profile and mass budgets will be presented to achieve these ambitious goals. Berlin [u.a.] Springer 2014 15 Advances in solar sailing 978-3-642-34906-5 (Print) ; 978-3-642-34907-2 (E-Book) 227 242 bezahl http://dx.doi.org/10.1007/978-3-642-34907-2_16<7A> Fachbereich Luft- und Raumfahrttechnik OPUS4-6376 Teil eines Buches Macdonald, Malcolm, ; McGrath, C., ; Appourchaux, T., ; Dachwald, Bernd, dachwald@fh-aachen.de; Finsterle, W., ; Gizon, L., ; Liewer, P. C., ; McInnes, Colin R., ; Mengali, G., ; Seboldt, W., ; Sekii, T., ; Solanki, S. K., ; Velli, M., ; Wimmer-Schweingruber, R. F., ; Spietz, Peter, ; Reinhard, Ruedeger, Macdonald, Malcolm Gossamer roadmap technology reference study for a solar polar mission A technology reference study for a solar polar mission is presented. The study uses novel analytical methods to quantify the mission design space including the required sail performance to achieve a given solar polar observation angle within a given timeframe and thus to derive mass allocations for the remaining spacecraft sub-systems, that is excluding the solar sail sub-system. A parametric, bottom-up, system mass budget analysis is then used to establish the required sail technology to deliver a range of science payloads, and to establish where such payloads can be delivered to within a given timeframe. It is found that a solar polar mission requires a solar sail of side-length 100-125 m to deliver a 'sufficient value' minimum science payload, and that a 2.5 μm sail film substrate is typically required, however the design is much less sensitive to the boom specific mass. Berlin, Heidelberg Springer 2014 14 Advances in solar sailing 978-3-642-34906-5 243 257 10.1007/978-3-642-34907-2_17 weltweit https://doi.org/10.1007/978-3-642-34907-2_17 Fachbereich Luft- und Raumfahrttechnik OPUS4-10073 Konferenzveröffentlichung Grundmann, Jan Thimo, ; Bauer, Waldemar, ; Boden, Ralf Christian, ; Ceriotti, Matteo, ; Cordero, Federico, ; Dachwald, Bernd, ; Dumont, Etienne, ; Grimm, Christian D., ; Hercik, D., ; Herique, A., ; Ho, Tra-Mi, ; Jahnke, Rico, ; Kofman, Wlodek, ; Lange, Caroline, ; Lichtenheldt, Roy, ; McInnes, Colin R., ; Mikschl, Tobias, ; Mikulz, Eugen, ; Montenegro, Sergio, ; Moore, Iain, ; Pelivan, Ivanka, ; Peloni, Alessandro, ; Plettemeier, Dirk, ; Quantius, Dominik, ; Reershemius, Siebo, ; Renger, Thomas, ; Riemann, Johannes, ; Rogez, Yves, ; Ruffer, Michael, ; Sasaki, Kaname, ; Schmitz, Nicole, ; Seboldt, Wolfgang, ; Seefeldt, Patric, ; Spietz, Peter, ; Spröwitz, Tom, ; Sznajder, Maciej, ; Toth, Norbert, ; Viavattene, Giulia, ; Wejmo, Elisabet, ; Wolff, Friederike, ; Ziach, Christian, Responsive integrated small spacecraft solar sail and payload design concepts and missions Asteroid mining has the potential to greatly reduce the cost of in-space manufacturing, production of propellant for space transportation and consumables for crewed spacecraft, compared to launching the required resources from Earth's deep gravity well. This paper discusses the top-level mission architecture and trajectory design for these resource-return missions, comparing high-thrust trajectories with continuous low-thrust solar-sail trajectories. This work focuses on maximizing the economic Net Present Value, which takes the time-cost of finance into account and therefore balances the returned resource mass and mission duration. The different propulsion methods will then be compared in terms of maximum economic return, sets of attainable target asteroids, and mission flexibility. This paper provides one more step towards making commercial asteroid mining an economically viable reality by integrating trajectory design, propulsion technology and economic modelling. 2019 Conference: 5th International Symposium on Solar Sailing (ISSS 2019) Conference: 5th International Symposium on Solar Sailing (ISSS 2019)At: Aachen, Germany https://www.researchgate.net/publication/334964831_Responsive_integrated_small_spacecraft_solar_sail_and_payload_design_concepts_and_missions Fachbereich Luft- und Raumfahrttechnik OPUS4-10093 Konferenzveröffentlichung Grundmann, Jan Thimo, ; Borella, Laura, ; Ceriotti, Matteo, ; Chand, Suditi, ; Cordero, Federico, ; Dachwald, Bernd, Dachwald@fh-aachen.de; Fexer, Sebastian, ; Grimm, Christian D., ; Hendrikse, Jeffrey, ; Herčík, David, ; Herique, Alain, ; Hillebrandt, Martin, ; Ho, Tra-Mi, ; Kesseler, Lars, ; Laabs, Martin, ; Lange, Caroline, ; Lange, Michael, ; Lichtenheldt, Roy, ; McInnes, Colin R., ; Moore, Iain, ; Peloni, Alessandro, ; Plettenmeier, Dirk, ; Quantius, Dominik, ; Seefeldt, Patric, ; Venditti, Flaviane c. F., ; Vergaaij, Merel, ; Viavattene, Giulia, ; Virkki, Anne K., ; Zander, Martin, More bucks for the bang: new space solutions, impact tourism and one unique science & engineering opportunity at T-6 months and counting For now, the Planetary Defense Conference Exercise 2021's incoming fictitious(!), asteroid, 2021 PDC, seems headed for impact on October 20th, 2021, exactly 6 months after its discovery. Today (April 26th, 2021), the impact probability is 5%, in a steep rise from 1 in 2500 upon discovery six days ago. We all know how these things end. Or do we? Unless somebody kicked off another headline-grabbing media scare or wants to keep civil defense very idle very soon, chances are that it will hit (note: this is an exercise!). Taking stock, it is barely 6 months to impact, a steadily rising likelihood that it will actually happen, and a huge uncertainty of possible impact energies: First estimates range from 1.2 MtTNT to 13 GtTNT, and this is not even the worst-worst case: a 700 m diameter massive NiFe asteroid (covered by a thin veneer of Ryugu-black rubble to match size and brightness), would come in at 70 GtTNT. In down to Earth terms, this could be all between smashing fireworks over some remote area of the globe and a 7.5 km crater downtown somewhere. Considering the deliberate and sedate ways of development of interplanetary missions it seems we can only stand and stare until we know well enough where to tell people to pack up all that can be moved at all and save themselves. But then, it could just as well be a smaller bright rock. The best estimate is 120 m diameter from optical observation alone, by 13% standard albedo. NASA's upcoming DART mission to binary asteroid (65803) Didymos is designed to hit such a small target, its moonlet Dimorphos. The Deep Impact mission's impactor in 2005 successfully guided itself to the brightest spot on comet 9P/Tempel 1, a relatively small feature on the 6 km nucleus. And 'space' has changed: By the end of this decade, one satellite communication network plans to have launched over 11000 satellites at a pace of 60 per launch every other week. This level of series production is comparable in numbers to the most prolific commercial airliners. Launch vehicle production has not simply increased correspondingly - they can be reused, although in a trade for performance. Optical and radio astronomy as well as planetary radar have made great strides in the past decade, and so has the design and production capability for everyday 'high-tech' products. 60 years ago, spaceflight was invented from scratch within two years, and there are recent examples of fast-paced space projects as well as a drive towards 'responsive space'. It seems it is not quite yet time to abandon all hope. We present what could be done and what is too close to call once thinking is shoved out of the box by a clear and present danger, to show where a little more preparedness or routine would come in handy - or become decisive. And if we fail, let's stand and stare safely and well instrumented anywhere on Earth together in the greatest adventure of science. 2021 7th IAA Planetary Defense Conference 7th IAA Planetary Defense Conference, Vienna, Austria, 26-30 April 2021 https://iaaspace.org/event/8th-iaa-planetary-defense-conference-2023/ Fachbereich Luft- und Raumfahrttechnik OPUS4-10034 Konferenzveröffentlichung Grundmann, Jan Thimo, ; Bauer, Waldemar, ; Boden, Ralf Christian, ; Ceriotti, Matteo, ; Cordero, Federico, ; Dachwald, Bernd, Dachwald@fh-aachen.de; Dumont, Etienne, ; Grimm, Christian D., ; Hercik, D., ; Herique, A., ; Ho, Tra-Mi, ; Jahnke, Rico, ; Kofman, Wlodek, ; Lange, Caroline, ; Lichtenheldt, Roy, ; McInnes, Colin R., ; Mikschl, Tobias, ; Montenegro, Sergio, ; Moore, Iain, ; Pelivan, Ivanka, ; Peloni, Alessandro, ; Plettenmeier, Dirk, ; Quantius, Dominik, ; Reershemius, Siebo, ; Renger, Thomas, ; Riemann, Johannes, ; Rogez, Yves, ; Ruffer, Michael, ; Sasaki, Kaname, ; Schmitz, Nicole, ; Seboldt, Wolfgang, ; Seefeldt, Patric, ; Spietz, Peter, ; Spröwitz, Tom, ; Sznajder, Maciej, ; Toth, Norbert, ; Viavattene, Giulia, ; Wejmo, Elisabet, ; Wolff, Friederike, ; Ziach, Christian, Responsive exploration and asteroid characterization through integrated solar sail and lander development using small spacecraft technologies In parallel to the evolution of the Planetary Defense Conference, the exploration of small solar system bodies has advanced from fast fly-bys on the sidelines of missions to the planets to the implementation of dedicated sample-return and in-situ analysis missions. Spacecraft of all sizes have landed, touch-and-go sampled, been gently beached, or impacted at hypervelocity on asteroid and comet surfaces. More have flown by close enough to image their surfaces in detail or sample their immediate environment, often as part of an extended or re-purposed mission. And finally, full-scale planetary defense experiment missions are in the making. Highly efficient low-thrust propulsion is increasingly applied beyond commercial use also in mainstream and flagship science missions, in combination with gravity assist propulsion. Another development in the same years is the growth of small spacecraft solutions, not in size but in numbers and individual capabilities. The on-going NASA OSIRIS-REx and JAXA HAYABUSA2 missions exemplify the trend as well as the upcoming NEA SCOUT mission or the landers MINERVA-II and MASCOT recently deployed on Ryugu. We outline likely as well as possible and efficient routes of continuation of all these developments towards a propellant-less and highly efficient class of spacecraft for small solar system body exploration: small spacecraft solar sails designed for carefree handling and equipped with carried landers and application modules, for all asteroid user communities -planetary science, planetary defence, and in-situ resource utilization. This projection builds on the experience gained in the development of deployable membrane structures leading up to the successful ground deployment test of a (20 m)² solar sail at DLR Cologne and in the 20 years since. It draws on the background of extensive trajectory optimization studies, the qualified technology of the DLR GOSSAMER-1 deployment demonstrator, and the MASCOT asteroid lander. These enable 'now-term' as well as near-term hardware solutions, and thus responsive fast-paced development. Mission types directly applicable to planetary defense include: single and Multiple NEA Rendezvous ((M)NR) for mitigation precursor, target monitoring and deflection follow-up tasks; sail-propelled head-on retrograde kinetic impactors (RKI) for mitigation; and deployable membrane based methods to modify the asteroid's properties or interact with it. The DLR-ESTEC GOSSAMER Roadmap initiated studies of missions uniquely feasible with solar sails such as Displaced L1 (DL1) space weather advance warning and monitoring and Solar Polar Orbiter (SPO) delivery which demonstrate the capability of near-term solar sails to achieve NEA rendezvous in any kind of orbit, from Earth-coorbital to extremely inclined and even retrograde orbits. For those mission types using separable payloads, such as SPO, (M)NR and RKI, design concepts can be derived from the separable Boom Sail Deployment Units characteristic of DLR GOSSAMER solar sail technology, nanolanders like MASCOT, or microlanders like the JAXA-DLR Jupiter Trojan Asteroid Lander for the OKEANOS mission which can shuttle from the sail to the asteroids visited and enable multiple NEA sample-return missions. These are an ideal match for solar sails in micro-spacecraft format whose launch configurations are compatible with ESPA and ASAP secondary payload platforms. 2019 IAA Planetary Defense Conference Conference: IAA Planetary Defense ConferenceAt: Washington DC, USA 29.04-03.05.2019 https://www.researchgate.net/publication/335352701_Responsive_exploration_and_asteroid_characterization_through_integrated_solar_sail_and_lander_development_using_small_spacecraft_technologies Fachbereich Luft- und Raumfahrttechnik OPUS4-10024 Konferenzveröffentlichung Dachwald, Bernd, Dachwald@fh-aachen.de; Baturkin, Volodymyr, ; Coverstone, Victoria, ; Diedrich, Ben, ; Garbe, Gregory, ; Görlich, Marianne, ; Leipold, Manfred, ; Lura, Franz, ; Macdonald, Malcolm, ; McInnes, Colin, ; Mengali, Giovanni, ; Quarta, Alessandro, ; Rios-Reyes, Leonel, ; Scheeres, Daniel J., ; Seboldt, Wolfgang, ; Wie, Bong, Potential effects of optical solar sail degredation on trajectory design The optical properties of the thin metalized polymer films that are projected for solar sails are assumed to be affected by the erosive effects of the space environment. Their degradation behavior in the real space environment, however, is to a considerable degree indefinite, because initial ground test results are controversial and relevant inspace tests have not been made so far. The standard optical solar sail models that are currently used for trajectory design do not take optical degradation into account, hence its potential effects on trajectory design have not been investigated so far. Nevertheless, optical degradation is important for high-fidelity solar sail mission design, because it decreases both the magnitude of the solar radiation pressure force acting on the sail and also the sail control authority. Therefore, we propose a simple parametric optical solar sail degradation model that describes the variation of the sail film's optical coefficients with time, depending on the sail film's environmental history, i.e., the radiation dose. The primary intention of our model is not to describe the exact behavior of specific film-coating combinations in the real space environment, but to provide a more general parametric framework for describing the general optical degradation behavior of solar sails. Using our model, the effects of different optical degradation behaviors on trajectory design are investigated for various exemplary missions. 2005 23 AAS/AIAA Astrodynamics Specialist 2005 AAS/AIAA Astrodynamics Specialist Conference, 7-11.08.2005. Lake Tahoe, California https://www.space-flight.org/AAS_meetings/2005_astro/2005_astro.html 1 23 weltweit https://strathprints.strath.ac.uk/6267/6/strathprints006267.pdf Fachbereich Luft- und Raumfahrttechnik OPUS4-9726 Wissenschaftlicher Artikel Spietz, Peter, ; Spröwitz, Tom, ; Seefeldt, Patric, ; Grundmann, Jan Thimo, ; Jahnke, Rico, ; Mikschl, Tobias, ; Mikulz, Eugen, ; Montenegro, Sergio, ; Reershemius, Siebo, ; Renger, Thomas, ; Ruffer, Michael, ; Sasaki, Kaname, ; Sznajder, Maciej, ; Tóth, Norbert, ; Ceriotti, Matteo, ; Dachwald, Bernd, dachwald@fh-aachen.de; Macdonald, Malcolm, ; McInnes, Colin, ; Seboldt, Wolfgang, ; Quantius, Dominik, ; Bauer, Waldemar, ; Wiedemann, Carsten, ; Grimm, Christian D., ; Hercik, David, ; Ho, Tra-Mi, ; Lange, Caroline, ; Schmitz, Nicole, Paths not taken - The Gossamer roadmap's other options Amsterdam Elsevier 2021 44 Advances in Space Research 67 9 2912 2956 10.1016/j.asr.2021.01.044 campus https://doi.org/10.1016/j.asr.2021.01.044 Fachbereich Luft- und Raumfahrttechnik OPUS4-9730 Konferenzveröffentlichung Grundmann, Jan Thimo, ; Bauer, Waldemar, ; Boden, Ralf, ; Ceriotti, Matteo, ; Chand, Suditi, ; Cordero, Federico, ; Dachwald, Bernd, dachwald@fh-aachen.de; Dumont, Etienne, ; Grimm, Christian D., ; Heiligers, Jeannette, ; Herčík, David, ; Hérique, Alain, ; Ho, Tra-Mi, ; Jahnke, Rico, ; Kofman, Wlodek, ; Lange, Caroline, ; Lichtenheldt, Roy, ; McInnes, Colin, ; Meß, Jan-Gerd, ; Mikschl, Tobias, ; Mikulz, Eugen, ; Montenegro, Sergio, ; Moore, Iain, ; Pelivan, Ivanka, ; Peloni, Alessandro, ; Plettemeier, Dirk, ; Quantius, Dominik, ; Reershemius, Siebo, ; Renger, Thomas, ; Riemann, Johannes, ; Rogez, Yves, ; Ruffer, Michael, ; Sasaki, Kaname, ; Schmitz, Nicole, ; Seboldt, Wolfgang, ; Seefeldt, Patric, ; Spietz, Peter, ; Spröwitz, Tom, ; Sznajder, Maciej, ; Tóth, Norbert, ; Vergaaij, Merel, ; Viavattene, Giulia, ; Wejmo, Elisabet, ; Wiedemann, Carsten, ; Wolff, Friederike, ; Ziach, Christian, Flights are ten a sail - Re-use and commonality in the design and system engineering of small spacecraft solar sail missions with modular hardware for responsive and adaptive exploration 2019 6 70th International Astronautical Congress (IAC) 9781713814856 70th International Astronautical Congress (IAC), Washington D.C., United States, 21-25 October 2019 1 7 weltweit https://eprints.gla.ac.uk/202033/ Fachbereich Luft- und Raumfahrttechnik OPUS4-9971 Konferenzveröffentlichung Dachwald, Bernd, Dachwald@fh-aachen.de; Mengali, Giovanni, ; Quarta, Alessandro A, ; Macdonald, Malcolm, ; McInnes, Colin R, Optical solar sail degradation modelling We propose a simple parametric OSSD model that describes the variation of the sail film's optical coefficients with time, depending on the sail film's environmental history, i.e., the radiation dose. The primary intention of our model is not to describe the exact behavior of specific film-coating combinations in the real space environment, but to provide a more general parametric framework for describing the general optical degradation behavior of solar sails. 2007 27 1st International Symposium on Solar Sailing 1st International Symposium on Solar Sailing 27-29 June 2007, Herrsching, Germany 1 27 http://www.isss.spacesailing.net/ Fachbereich Luft- und Raumfahrttechnik OPUS4-9001 Konferenzveröffentlichung Grundmann, Jan Thimo, ; Bauer, Wlademar, ; Borchers, Kai, ; Dumont, Etienne, ; Grimm, Christian D., ; Ho, Tra-Mi, ; Jahnke, Rico, ; Koch, Aaron D., ; Lange, Caroline, ; Maiwald, Volker, ; Meß, Jan-Gerd, ; Mikulz, Eugen, ; Quantius, Dominik, ; Reershemius, Siebo, ; Renger, Thomas, ; Sasaki, Kaname, ; Seefeldt, Patric, ; Spietz, Peter, ; Spröwitz, Tom, ; Sznajder, Maciej, ; Toth, Norbert, ; Ceriotti, Matteo, ; McInnes, Colin, ; Peloni, Alessandro, ; Biele, Jens, ; Krause, Christian, ; Dachwald, Bernd, dachwald@fh-aachen.de; Hercik, David, ; Lichtenheldt, Roy, ; Wolff, Friederike, ; Koncz, Alexander, ; Pelivan, Ivanka, ; Schmitz, Nicole, ; Boden, Ralf, ; Riemann, Johannes, ; Seboldt, Wolfgang, ; Wejmo, Elisabet, ; Ziach, Christian, ; Mikschl, Tobias, ; Montenegro, Sergio, ; Ruffer, Michael, ; Cordero, Federico, ; Tardivel, Simon, Solar sails for planetary defense & high-energy missions 20 years after the successful ground deployment test of a (20 m) 2 solar sail at DLR Cologne, and in the light of the upcoming U.S. NEAscout mission, we provide an overview of the progress made since in our mission and hardware design studies as well as the hardware built in the course of our solar sail technology development. We outline the most likely and most efficient routes to develop solar sails for useful missions in science and applications, based on our developed `now-term' and near-term hardware as well as the many practical and managerial lessons learned from the DLR-ESTEC Gossamer Roadmap. Mission types directly applicable to planetary defense include single and Multiple NEA Rendezvous ((M)NR) for precursor, monitoring and follow-up scenarios as well as sail-propelled head-on retrograde kinetic impactors (RKI) for mitigation. Other mission types such as the Displaced L1 (DL1) space weather advance warning and monitoring or Solar Polar Orbiter (SPO) types demonstrate the capability of near-term solar sails to achieve asteroid rendezvous in any kind of orbit, from Earth-coorbital to extremely inclined and even retrograde orbits. Some of these mission types such as SPO, (M)NR and RKI include separable payloads. For one-way access to the asteroid surface, nanolanders like MASCOT are an ideal match for solar sails in micro-spacecraft format, i.e. in launch configurations compatible with ESPA and ASAP secondary payload platforms. Larger landers similar to the JAXA-DLR study of a Jupiter Trojan asteroid lander for the OKEANOS mission can shuttle from the sail to the asteroids visited and enable multiple NEA sample-return missions. The high impact velocities and re-try capability achieved by the RKI mission type on a final orbit identical to the target asteroid's but retrograde to its motion enables small spacecraft size impactors to carry sufficient kinetic energy for deflection. 2019 20 IEEE Aerospace Conference Proceedings AERO 2019; Big Sky; United States; 2 March 2019 through 9 March 2019 1 21 10.1109/AERO.2019.8741900 https://doi.org/10.1109/AERO.2019.8741900 Fachbereich Luft- und Raumfahrttechnik