Session B2 Paper 6125 Disclaimer — this paper partially fulfills a writing requirement for first year (freshman) engineering students at the University of Pittsburgh’s Swanson School of Engineering. This paper is a student, not a professional, paper. This paper is based on publicly available information and may not be provide complete analyses of all relevant data. If this paper is used for any purpose other than these authors’ partial fulfillment of a writing requirement for first year (freshman) engineering students at the University of Pittsburgh’s Swanson School of Engineering, the user does so at his or her own risk. THE PRESESNT AND FUTURE OF SOLAR AIRCRAFTS Alicia Hu (aqh3@pitt.edu, Bursic 2:00), Tyler Thompson (tyt5@pitt.edu, Mahboobin 10:00am) significance, both socially and environmentally. The conclusion would then be any final thoughts, personal opinions towards how the technology should be implemented, and any other loose ends to be wrapped up. PROPOSAL This paper will discuss the use of solar cell technology in manned solar planes, solar drones, and other solar aircrafts, and its significance. Leading in this field is Solar Impulse, a Swiss clean energy solutions company with a focus on aviation. Its current aircraft, Solar Impulse 2 (SI2) is currently at the midpoint of its journey around the world. It recently completed the longest leg of its journey, where it had to fly for five straight days and nights [4]. Unlike other planes, the SI2 manages to fly using only clean solar energy, equipped with solar cells, lithium-sulfur batteries, and propeller engines [1]. During the day, the power generated by the solar cells drives two tiny electric motors, causing the plane to climb upwards; during the night, the plane saves energy by gradually descending downwards. Thus, the plane theoretically can remain aloft for months [3]. In order to achieve this, the engineers at Solar Impulse had to maximize the energy efficiency of the craft. One of the most significant aspects of this involved drastically decreasing the SI2’s energy consumption. Although it is currently infeasible for commercial planes to be entirely reliant on solar energy due to the amount of energy required to power the heavier commercial jets [3], this technology could still be used in conjunction with traditional fuel sources to reduce pollution. This is significant because, according to the International Panel on Climate Change, fossil fuels generate up to 51 times the greenhouse gases as those released during the production of enough solar panels to power the same system [5]. In addition, this technology can also be used to power solar drones, which can be a potential replacement for satellites, to track weather patterns, and to stream the internet [2]. The resources that will be used to further research for this paper are text that focus specifically on Solar Impulse, which involve mainly news articles and the company website, and more general papers that outline the technology of solarpowered aircraft. The paper will be organized by first contextualizing the technology in terms of the Solar Impulse project but then extending to a more general technical description of the technology. Afterwards, the paper will discuss the relationship between this technology and Electrical Engineering and then its short-term and long-term REFERENCES [1] O. Kederoglu, M. Kocaoğlan, B. Saraç, et. al. (2012). “Solar Powered Aircraft.” International University of Sarajevo. (Online project). http://www.academia.edu/7515954/Solar_Powered_Aircraft _Project This report, published by the International University of Sarajevo, is a comprehensive outline of the different technologies for the various types of current solar-powered aircraft, as well as its economic feasibilities. This source will be very helpful in describing the minutiae of photovoltaic cells designed for powering aircraft, but also includes comparisons and data on a broad range of different aircraft. [2] S. Bradley. (2016). “Solar Impulse may turn into stratospheric drone.” Swiss Broadcasting Organization. (Online article). http://www.swissinfo.ch/eng/unmannedflight_solar-impulse-may-turn-into-stratosphericdrone/41872664 This article from SwissInfo, a branch of the Swiss Broadcasting Company (a non-profit organization), provides details on the work done by Solar Impulse and makes hypotheses on future uses for their innovations in solar technology. This source can be used to describe the technology involved in solar drones as well as to discuss future societal and ethical impacts of the technology. [3] J. Linshi. (2015). “Everything You Need to Know About Solar Impulse.” TIME. (Online article). http://time.com/3903110/solar-impulse-plane/ This article, published by the weekly American magazine TIME, describes the Solar Impulse project, specifically the goal and current updates of Solar Impulse 2 to fly around the world, and its background. This article will be used mainly as a source for specific information on the Solar Impulse project, 1 University of Pittsburgh, Swanson School of Engineering 2016-1-29 Session B2 Paper 6125 S. Brown. (2016). “Are Solar-Powered Drones the Future of Sustainability?” Tech.Co. (Online article). http://tech.co/solar-powered-drones-future-sustainability2016-01 other similar projects, and what technologies are needed for such an endeavor. [4] “Our Adventure.” (2015). Solar Impulse. (Company website). http://www.solarimpulse.com/adventure This article, published by Tech.Co, discusses future uses and the ramifications of solar powered drones and their related technologies. Tech.Co was founded by former Tribune and AOL product strategist Frank Gruber with the goal of giving technology entrepreneurs and companies the opportunity to connect with one another, as well as inform each other of their innovations. This paper can use this article to discuss future uses of solar drones. This website contains information published by Solar Impulse, a privately funded Swiss organization seeking to create the first long-range solar-powered aircraft to circumnavigate the globe. It provides more in-depth details on how their technology works and what they hope to accomplish in the long-run by developing this technology. This source can use this to describe the technology and its cultural, ethical, and societal ramifications. [5] “Environmental Benefits of Solar Energy.” (2014). Pure Energies. (Company website). https://pureenergies.com/us/home-solar/solarbasics/benefits-of-solar-energy/ This article, published by a residential solar industry company Pure Energies on its company website, describes the specific benefits of utilizing solar energy, which are mainly environmental but also economical as well. This source will be helpful in demonstrating the significance of solar-powered aircraft by establishing the advantages of replacing more traditional fossil fuels, such as jet fuel, with solar energy. SOURCES CONSULTED “Choosing your Topic.” University Library System. (2014). (Video). http://www.library.pitt.edu/other/files/il/fresheng/index.html This video was published by the University of Pittsburgh’s University Library System in order to help freshman students more easily choose topics for their writing-intensive classes, such as the required engineering courses Engineering Analysis and Engineering Computing. The paper utilized this source to help us choose our topic and it was a major influence in helping us choose a more specific topic. “Solar-powered drones from Facebook could deliver internet around the world.” (2014). RT. (Online article). https://www.rt.com/usa/facebook-drone-space-internet-813/ This article, published by RT, a Russian news site, describes Facebook’s rumored deal to acquire an aerospace company, Titan Aerospace, to launch solar-powered drones. While the drones, according to Titan, have a wide variety of applications, Facebook primarily is using them to provide Internet globally. This resource will be helpful when the paper discusses the practical and future applications of solarpowered drone, mainly commercially. 2