Optimal speed scheduling for hybrid solar aircraft with arrival time condition

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Improvements in solar cell weight and performance has enabled the development of small solar powered aircraft which operate at low altitudes. Unlike high altitude pseu-dosatellites, these aircraft must contend with significant stochastic variations in wind and solar energy. This paper examines speed scheduling for solar augmented aircraft (i.e. an aircraft equipped with solar panels and a supplementary energy source which cannot be recharged in flight). We show that solar energy can be considered as identical to vertical air motion exploited by a sailplane. This permits soaring speed to fly theory to be extended to incorporate both solar energy and atmospheric vertical motion. The use of stored energy onboard allows derivation of a speed to fly theory with an arrival time constraint, allowing the exploitation of stochastic energy during a flight plan. The speed schedule is tested in Monte Carlo simulations and shows the ability to satisfy an arrival time constraint while reducing energy consumption by approximately 2% and reducing variation in final energy state by approximately 3%. The algorithm is also tested in flight using a small uas, and shows the ability to satisfy an arrival time condition within 1%.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2019 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105784
DOIs
StatePublished - Jan 1 2019
EventAIAA Scitech Forum, 2019 - San Diego, United States
Duration: Jan 7 2019Jan 11 2019

Publication series

NameAIAA Scitech 2019 Forum

Conference

ConferenceAIAA Scitech Forum, 2019
CountryUnited States
CitySan Diego
Period1/7/191/11/19

Fingerprint

Scheduling
Aircraft
Solar energy
Wind power
Electron energy levels
Solar cells
Energy utilization
Air

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

Cite this

Bird, J. J., & Langelaan, J. W. (2019). Optimal speed scheduling for hybrid solar aircraft with arrival time condition. In AIAA Scitech 2019 Forum (AIAA Scitech 2019 Forum). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2019-1421
Bird, John J. ; Langelaan, Jacob Willem. / Optimal speed scheduling for hybrid solar aircraft with arrival time condition. AIAA Scitech 2019 Forum. American Institute of Aeronautics and Astronautics Inc, AIAA, 2019. (AIAA Scitech 2019 Forum).
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Bird, JJ & Langelaan, JW 2019, Optimal speed scheduling for hybrid solar aircraft with arrival time condition. in AIAA Scitech 2019 Forum. AIAA Scitech 2019 Forum, American Institute of Aeronautics and Astronautics Inc, AIAA, AIAA Scitech Forum, 2019, San Diego, United States, 1/7/19. https://doi.org/10.2514/6.2019-1421

Optimal speed scheduling for hybrid solar aircraft with arrival time condition. / Bird, John J.; Langelaan, Jacob Willem.

AIAA Scitech 2019 Forum. American Institute of Aeronautics and Astronautics Inc, AIAA, 2019. (AIAA Scitech 2019 Forum).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Bird JJ, Langelaan JW. Optimal speed scheduling for hybrid solar aircraft with arrival time condition. In AIAA Scitech 2019 Forum. American Institute of Aeronautics and Astronautics Inc, AIAA. 2019. (AIAA Scitech 2019 Forum). https://doi.org/10.2514/6.2019-1421