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Multiphysical Simulation of a Semi-Autonomous Solar Powered High Altitude Pseudo-Satellite

Müller, Reiko and Kiam, Jane Jean and Mothes, Federico (2018) Multiphysical Simulation of a Semi-Autonomous Solar Powered High Altitude Pseudo-Satellite. In: IEEE Aerospace Conference Proceedings (2018), pp. 1-16. IEEE Aerospace Conference, 03.-10. März 2018, Big Sky, USA. doi: 10.1109/AERO.2018.8396531. ISBN 978-1-5386-2014-4. ISSN 1095323X.

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Official URL: https://ieeexplore.ieee.org/document/8396531


With advances made in the fields of energy generation from renewable sources, airborne electrical propulsion, and autonomous system operation, much activity has been directed towards the development of so called high altitude pseudo satellites (HAPS) in recent years, with Zephyr(Airbus) and Aquila (Facebook) as prominent examples. Compared to classical orbital satellites, these are designed to require lower deployment costs and to offer a high flexibility in operational tasks and a long mission endurance. In the project StraVARIA, the goal was to develop a high-fidelity multiphysical simulation of such a HAPS, including a long-term mission planner, a reactive guidance system for weather avoidance, a flight control system with protections, a 6-DoF model with solar-electric propulsion system, and a comprehensive environment simulation with 4-D wind and turbulence. Due to the long mission duration, the mission planner and guidance system offer an increased autonomy level compared to standard operator controlled UAVs, however human input is still required for high level planning. The acausal and object-oriented modeling language Modelica has been used to create the integrated simulation model, enabling a modular and detailed modeling approach. By automatic code generation and optimization, simulation efficiency is improved, which is an important factor when considering long-term missions. Results of the integrated simulation show that missions like area surveillance and communication relay are possible whenever adverse weather conditions can be avoided. Ascending to and descending from mission altitude of approximately 18 km also poses a threat to the lightweight HAPS construction since layers of stronger winds and atmospheric disturbance have to be passed. To this end, simulated example missions over Bavaria are presented showcasing these effects, where mission success is ensured by means of the long term mission planner, the reactive guidance, and the inner-level protections implemented in the flight control system.

Item URL in elib:https://elib.dlr.de/119412/
Document Type:Conference or Workshop Item (Speech)
Title:Multiphysical Simulation of a Semi-Autonomous Solar Powered High Altitude Pseudo-Satellite
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Müller, ReikoReiko.Mueller (at) DLR.deUNSPECIFIED
Kiam, Jane Jeanjane.kiam (at) unibw.deUNSPECIFIED
Mothes, Federicofederico.mothes (at) hm.eduUNSPECIFIED
Journal or Publication Title:IEEE Aerospace Conference Proceedings
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1109/AERO.2018.8396531
Page Range:pp. 1-16
Series Name:IEEE Aerospace Conference Proceedings
Keywords:High altitude pseudo satellite, solar powered aircraft, high altitude long endurance aircraft, mission planning, weather avoidance, flight control, mission simulation, multiphysical modeling
Event Title:IEEE Aerospace Conference
Event Location:Big Sky, USA
Event Type:international Conference
Event Dates:03.-10. März 2018
Organizer:IEEE Institute of Electrical and Electronics Engineers
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of System Dynamics and Control > Aircraft System Dynamics
Deposited By: Müller, Reiko
Deposited On:09 Apr 2018 13:18
Last Modified:31 Jul 2019 20:16

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