Unit 1 Research Assignment Mechanical and Theoretical Examination of Future Artificial Gravity Technologies with Societal and Environmental Impacts V. Patange Chinguacousy Secondary School - SPH4U0 INTRODUCTION Artificial gravity is the concept of mimicking natural gravity experienced on celestial bodies in environments which lack thereof. The Russian aerospace engineer Konstantin Tsiolkovsky had kickstarted the concept of artificial gravity after doubting the safety of human biology in constant weightlessness during the late 1800s (Clément & Bukley, 2007). As humans continue to explore and learn about the world beyond the atmosphere, orbital experiments and observations have made the fact of health problems abundantly clear; according to Grimm et al. (2016) human bodies undergo skeletal and muscular atrophy along with poorer cardiovascular and immune system performance. The prospect of simulating gravitational force to keep astronauts in space healthy in microgravity environments makes artificial gravity an important point of discussion when considering extended space flights harboring humans. Through implementation of artificial gravity, it is considered that many health adversities which humans—and biology in general develop—can be mitigated with utilization of artificial gravity (National Aeronautics and Space Administration, 2022). DYNAMICS AND MECHANICS Artificial gravity can be achieved through usage of circular motion dynamics with a centrifugal device. By taking advantage of the centripetal and fictitious centrifugal forces at play during rotation, earth-like gravitation would be imitated. Newton’s law of inertia explains that matter in motion prefers to move in the direction of motion already prescribed to it, so when the centripetal force pulls back on it, an opposite force will be experienced by the object in its attempt to continue its otherwise constant straight motion (Editors of Encyclopaedia Britannica, 2023). This is why centrifugal force is felt. Bringing this concept to creating artificial gravity in future space stations, by having humans undergo centripetal acceleration, centrifugal force will be experienced as they are pushed into the normal of the centrifuge, resulting in a gravitational force sensation. Putting this theory into practice is another challenge. As the difficulties faced will be related to the engineering needed to keep the centrifuge spinning, in proper condition, and in cost effective manor. SOCIETAL IMPLICATIONS Society can be massively influenced by artificial gravity as, if the concept is proven, this can influence many generations after to start looking at the stars and renew interest in space exploration in the public perception. An example of this could be seen in the Apollo programs in the midst of the 21st century. During this time, societal impact was immense. The world changed quickly as the moon landing was broadcasted to every T.V. in every household in America and around the globe. From the large audience and attention which this program cultivated, this seemed to mark a turning point in history for humanity where exploration to other celestial bodies is within our grasp (Chaikin, n.d.). The importance of the event is that it inspired many to push beyond what was thought possible and marked a new era of humanity. With the development of artificial gravity, this can have incredible impacts on survivability and belonging in space. Another era of human civilization can be jump started as extended exposure of microgravity can be treated by circular motion. Through artificial gravity, human adaptability in weightlessness would drastically increase. Now, there is negative sentiment towards exploring space in general as the argument is that money can be used for more urgent needs down here on earth. This was the case for the moon landing as well, where instead of using the money to explore the moon, it could have been redirected to the people in need of food and shelter (Chaikin, n.d.). This argument suggests that space exploration is a waste of time, not an investment. Spending time and resources here on earth right now would definitely make an impact on earth, however, we would be missing out on discoveries which would otherwise return rewards which can further help with the current issues on this planet as these issues are more urgent than the curiosity and drive to explore space. An example of this is looking at the different inventions and discoveries which NASA made during the process of space exploration. An additional reason for investing is that NASA strengthens the economy through offering jobs and increases industry productivity (Curto, 1995) this results in a healthier economy for reinvesting into the pressing problems we face every day. ENVIRONMENTAL IMPACTS As more material is launched into space, the more spaced debris enters low-earth orbit. Here, space debris can be very dangerous as it collides with other debris, turning into more super fast moving particles waiting to destroy operational space vehicles and equipment in orbit (Gregersen, 2019). This creates greater difficulty to establish orbits as more maneuvers and tighter timings are needed to avoid debris. Inserting a space station with the capability of artificial gravity will require more modularity and launches to set up, resulting in greater amounts of debris released into low-earth orbit. To fix this, a solution to reduce space debris is to have stricter air traffic regulations into orbit and orbital flight plans which avoid grouping of debris (Pelton, 2019). Moving on, space launches and deorbiting of debris can disrupt natural life and ecosystems through anthropogenic means (Koroleva et al., 2018). This means that the sound and heat are most prevalent in interfering with ecosystems and habitats as rockets cause most noticeable energy through these means. This can lead to regression in wildlife in the area and destroy habitats. References Chaikin, A. (n.d.). Live from the Moon: The Societal Impact of Apollo. https://history.nasa.gov/sp4801-chapter4.pdf Clément, G., & Bukley, A. (2007). Artificial Gravity. In Google Books. Springer Science & Business Media. https://books.google.ca/books?hl=en&lr=&id=YUcjOsG0hi0C&oi=fnd&pg=PR5&dq=ar tificial+gravity&ots=QHrul4FgjS&sig=QA4_HZXJcJmX8FbKp8TzpBy00IU#v=onepag e&q=artificial%20gravity&f=false Curto, P. (1995). Paper Session III-A - NASA’s Greatest Inventions and Contributions of Dual-Use Technologies in the 1990’s. Space Congress® Proceedings, 32. https://commons.erau.edu/space-congress-proceedings/proceedings-1995-32nd/april-27-1 995/7/ Editors of Encyclopaedia Britannica. (2023, October 27). Centrifuge. Encyclopedia Britannica. https://www.britannica.com/technology/centrifuge Gregersen, E. (2019). space debris | Facts, Removal, & Research. In Encyclopædia Britannica. https://www.britannica.com/technology/space-debris Grimm, D., Grosse, J., Wehland, M., Mann, V., Reseland, J. E., Sundaresan, A., & Corydon, T. J. (2016). The impact of microgravity on bone in humans. Bone, 87, 44–56. https://doi.org/10.1016/j.bone.2015.12.057 Koroleva, T. V., Krechetov, P. P., Semenkov, I. N., Sharapova, A. V., Lednev, S. A., Karpachevskiy, A. M., Kondratyev, A. D., & Kasimov, N. S. (2018). The environmental impact of space transport. Transportation Research Part D: Transport and Environment, 58, 54–69. https://doi.org/10.1016/j.trd.2017.10.013 National Aeronautics and Space Administration. (2022, September 6). Artificial Gravity Provides Partial Protection for Biology in Space. Nasa.gov. https://www.nasa.gov/centers-and-facilities/ames/artificial-gravity-provides-partial-protec tion-for-biology-in-space/ Pelton, J. N. (2019). A path forward to better space security: Finding new solutions to space debris, space situational awareness and space traffic management. Journal of Space Safety Engineering, 6(2), 92–100. https://doi.org/10.1016/j.jsse.2019.04.005