Warnick James Module5 Questions with Answers-Student.docx

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SFTY 335 - Module 5 1. Why are commercial or any aircraft that fly at altitude, pressurized? (up to 5 points) At the typical cruising altitude of 14,000 feet the ambient air pressure drops to around 8 psi, this would lead to a negative physiological response from pilots, aircrew, and passengers. 2. What is Pascal’s pressure assumption? (up to 5 points) It is a principle in fluid mechanics that states that, a pressure change occurring anywhere in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs every were . Pascal’s theory can also be applied to a gas which would be: a gas that is in a fixed volume of space will have its static pressure of contained gasses applied to all surfaces equally. 3. What are typical pressures used within commercial aircraft? (up to 15 points) Most commercial aircraft are pressurized to the ambient air pressure equivalent of 8,000 feet, the Boeing 737, Airbus A 350, and Airbus A 380 pressurize to an equivalent value of 5,000 feet.
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