P Altitude (m) Psea level P. sea level O (sea level) 1000 3000 5000 8000 10,000 12,000 14,000 15,000 Variation of Standard Atmosphere with Altitude TABLE 10.4 Altitude (m) Atmospheric Pressure (kPa) Air Density (kg/m³) O (sea level) 101.325 1.225 500 95.46 1.167 1000 89.87 1.112 1500 84.55 1.058 2000 79.50 1.006 2500 74.70 0.957 3000 70.11 0.909 3500 65.87 0.863 4000 61.66 0.819 4500 57.75 0.777 5000 54.05 0.736 6000 47.22 0.660 7000 41.11 0.590 8000 35.66 0.526 9000 30.80 0.467 10,000 26.50 0.413 11,000 22.70 0.365 12,000 19.40 0.312 13,000 16.58 0.266 14,000 14.17 0.228 15,000 12.11 0.195 Data from U.S. Standard Atmosphere (1962)
P Altitude (m) Psea level P. sea level O (sea level) 1000 3000 5000 8000 10,000 12,000 14,000 15,000 Variation of Standard Atmosphere with Altitude TABLE 10.4 Altitude (m) Atmospheric Pressure (kPa) Air Density (kg/m³) O (sea level) 101.325 1.225 500 95.46 1.167 1000 89.87 1.112 1500 84.55 1.058 2000 79.50 1.006 2500 74.70 0.957 3000 70.11 0.909 3500 65.87 0.863 4000 61.66 0.819 4500 57.75 0.777 5000 54.05 0.736 6000 47.22 0.660 7000 41.11 0.590 8000 35.66 0.526 9000 30.80 0.467 10,000 26.50 0.413 11,000 22.70 0.365 12,000 19.40 0.312 13,000 16.58 0.266 14,000 14.17 0.228 15,000 12.11 0.195 Data from U.S. Standard Atmosphere (1962)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Using the information given in Table 10.4 , determine the ratio of local pressure and density to sea-level values. Estimate the value of air density at the cruising altitude of most commercial airliners.
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