A-2.1

Calculate the mass of air (in kg) contained within a room 10 m long, 8 m wide, and 3 m high. Assume atmospheric pressure and temperature of 79,501 N/m ² (Pa) and 20 C, respectively.

A-2.2

One of the design requirements for the multirole jet fighter listed in Table 1.2 requires a certain performance at 15,000 ft MSL. What atmospheric conditions ( P, T, and ?) would you use in calculations that determine if a proposed design can meet this requirement?

A-2.3

Flight-test course students are preparing for a flight-test sortie in a light aircraft. As part of the systems check, they note that the altimeter indicates a pressure altitude of 7000 ft. The student flight-test engineer reads an air temperature of 65 F. What is the density altitude for these conditions?

A-2.4

A NASA Learjet has a section of one wing instrumented with devices capable of measuring temperature and pressure at discrete points on the wing. If at one of these points, the instruments measure pressure = 10 psi and temperature = ?20 F, what is the density of the air at that point?

A-2.5

An aircraft flying at a geometric altitude of 20,000 ft has instrument readings of P = 900 lb/ft ² and T = 460 R.

1. Find h _P, h _T, and h _? to the nearest 1000 ft.

2. If the aircraft were flying in a standard atmosphere, what would be the relationship among h