3241.CQ1 Solution - uses a nitrogen cold gas thruster to...

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MAE 3241: Aerodynamics and Flight Mechanics Name: _________________ Concept Quiz #1 Circle all the answer choices that apply: 1. My primary area of interest within aerospace engineering is (structures / aerodynamics / flight controls / propulsion). 2. As a future career choice, I am most interested in studying and working on: (commercial airplanes / military airplane / helicopters / rockets for launch / deep space exploration vehicles / get an MBA and make serious $$). 3. Theoretically inviscid flow is approached when the Reynolds number approaches (zero / unity / infinity). When Re approaches infinity. Review Section 1.10.2 4. In very broad terms, a flow with constant density is called (inviscid / incompressible / compressible / transonic). Incompressible 5. To maintain its orbital attitude and inclination a small communications satellite
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Unformatted text preview: uses a nitrogen cold gas thruster to provide small bursts of thrust. The pressure and temperature in the tank at the beginning of the thruster’s lifetime (launch) is 30 atmospheres and 300 K, respectively. After 1 year of operation in the cold space environment the pressure and temperature within the tank are 15 atmospheres and 150 K. During this time, the density of the nitrogen has (increased by a factor of 10 / decreased by a factor of 10 / increased by a factor of 2 / decreased by a factor of 2 / remained the same). This question is based on the ideal gas law: p= ρ RT. Writing the ideal gas law for both cases it can be seen that the density will remain constant....
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