Consider That You Are Involved In Dr Testik S Atmospheric Research At His Rainfall Lab At Utsa West Campus He Assigns 1 (162.63 KiB) Viewed 50 times
Consider that, you are involved in Dr. Testik's atmospheric research at his rainfall lab at UTSA West Campus. He assigns you to conduct atmospheric measurements using instruments on a meteorological balloon and asks you to estimate the maximum elevation that the balloon can rise using your knowledge from CE3603. The balloon is filled with Helium gas and has a spherical shape at all times during the flight. At the ground level, atmospheric pressure is 105 Pa and temperature is 293 K. Assume that atmospheric pressure and temperature linearly decrease 1000 Pa and 1 K, respectively, for every 100 m elevation increase from the ground. We inflate the balloon for a diameter of 1 m and the total of instrument payload and balloon mass is 0.5 kg. Specific constant R for air is 287 J/kg.K and for helium is 2077 J/kg.K. Assuming that the balloon is inelastic (i.e. balloon size and shape do not change), calculate the maximum elevation, h, (h=0 at the ground level) that the balloon can go up? See the schematic of the problem. h D = 1 m 4 m=0.5 kg (Balloon+Instruments) UTSA Atmospheric Research Lab Helium Balloon Instruments h=0 Pair 105 Pa (at h = 0) Tair = 293 K (at h = 0)
(Total of 3 Questions) (g = 9.81 m/s² = 32.17 ft/s²; Pwater = 1000 kg/m³ = 1.94 slug/ft³, Pmercury = 13,560 kg/m³ = 26.3 slug/ft³)
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