Answer to Question #234069 in Mechanical Engineering for Randal Rodriguez

Question

5. A pilot notices that the barometric pressure outside his aircraft is 85 kPaa. The airport below the plane

reports a barometric pressure of 100 kPaa. If the average air density is 1.15 kg m /m 3 and the local gravity

is 9.75 m/s 2 , determine the height of the aircraft above the ground in meters.

Answer 1

pressure altitude = (standard pressure - your current pressure setting) x 1,000 + field elevation

pressure altitude $= (100-85)\times1000+5000 =20000$ ft =6096m