Astronautics

Exxon Valdez Table of Contents Introduction: (Skinner, S.K. and Reilly, W.K., 1989)[1] A catastropic event taken place on March 24th 1989 at Prince William Sound, Alaska. An Oil Tanker known as Exxon Valdez owned by Exxon Shipping company was transporting 53.09451 million US gallons of crude oil. At 12:04 am the ship struck the Prince William Sound, Bligh reef. This caused 10.8 million US gallons of crude oil to spill hereby creating a huge environmental disaster and it was known that…

The year is 1961 and the U.S. is six years deep in a space race with the Soviet Union to show off to each other who has the best air and space capabilities. President Kennedy gives a speech saying that we will go to the moon “not because it is easy, but because it is hard” (Engle). Less than a decade later, on July 20th, 1969 at 20:17:40 UTC, the Apollo 13 mission put Neil Armstrong and Buzz Aldrin on the moon (“Theories”). Ever since that day the people have doubted the fact that we ever put…

Often, the form of government that a society utilizes is determined by a variety of factors that are complex and difficult to control. However, as we look towards the formation of extraterrestrial colonies, we have the chance to discuss the governance of these colonies in a way that could shape the future of humanity. There are a variety of options for the governing of such a society, and each must be considered as we discuss the form of government to adopt in such colonies. With several factors…

Tribological behavior of double-glow plasma Zirconium-Yttrium alloying on γ-TiAl Cong Huang, Pingze Zhang*, Dongbo Wei, Xiangfei Wei, Xiaohu Chen and Feng Ding (College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211100, China) * Corresponding author: pzzhang_nuaa@126.com Abstract: A Zr-Y alloyed layer was prepared onto the surface of γ-TiAl using double-glow plasma surface alloying technique (DG technique). The results showed that the Zr-Y…