a) An aircraft's instruments measure an airtemperature of -10° C and an air pressureof 90 kPa. What is the air density for theseconditions?b) What are the pressure and density altitudesof the aircraft? Use the following portion ofthe standard atmosphere tables.Altitude (m)7515025030045060075090010001200Pressure (KPa)101.3100.499.598.597.795.994.192.490.889.187.5Density (kg/m³)1.2250 1.2162 1.2075|| 1.1959| 1.1901| 1.1730| 1.1560|| 1.1392 1.1226| 1.1116| 1.0900

Answered: a) An aircraft's instruments measure an…

a) An aircraft's instruments measure an air temperature of -10° C and an air pressure of 90 kPa. What is the air density for these conditions?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

a) An aircraft's instruments measure an air
temperature of -10° C and an air pressure
of 90 kPa. What is the air density for these
conditions?
b) What are the pressure and density altitudes
of the aircraft? Use the following portion of
the standard atmosphere tables.
Altitude (m)
75
150
250
300
450
600
750
900
1000
1200
Pressure (KPa)
101.3
100.4
99.5
98.5
97.7
95.9
94.1
92.4
90.8
89.1
87.5
Density (kg/m³)
1.2250 1.2162 1.2075|| 1.1959| 1.1901| 1.1730| 1.1560|| 1.1392 1.1226| 1.1116| 1.0900

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