d) The wind tunnel starts at time t = 2 s and shuts down at time, t = 15 s. The normal shock wave crosses the Pitot probe at t = 10 s. You are given Figure Q2b, which shows the pressure measured by the Pitot probe as a function of time. Annotate the key timings on a copy of this graph and describe what these correspond to in terms of the tunnel flow. Also explain (with the help of sketches) whether the Pitot probe is functioning correctly. 2. You work for an aerospace company which is due to start testing a design in a supersonic wind tunnel. It is a two-dimensional, blow down wind tunnel with rectangular cross-section. The width of the wind tunnel is 100mm and the height at key points is provided in Figure Q2a. At x = 0 mm, the stagnation pressure is always 175 kPa and the stagnation temperature is 300 K. Prior to your test entry, you are given calibration data measured using a Pitot probe mounted in the centre of the test section during wind tunnel start up when the wind tunnel is empty. Your task is to evaluate whether the readings provided by the Pitot probe are sensible to check whether it is working correctly. You can neglect boundary-layer effects throughout this question.

d) The wind tunnel starts at time t = 2 s and shuts down at time, t = 15 s. The normal shock wave crosses the Pitot probe at t = 10 s. You are given Figure Q2b, which shows the pressure measured by the Pitot probe as a function of time. Annotate the key timings on a copy of this graph and describe what these correspond to in terms of the tunnel flow. Also explain (with the help of sketches) whether the Pitot probe is functioning correctly. 2. You work for an aerospace company which is due to start testing a design in a supersonic wind tunnel. It is a two-dimensional, blow down wind tunnel with rectangular cross-section. The width of the wind tunnel is 100mm and the height at key points is provided in Figure Q2a. At x = 0 mm, the stagnation pressure is always 175 kPa and the stagnation temperature is 300 K. Prior to your test entry, you are given calibration data measured using a Pitot probe mounted in the centre of the test section during wind tunnel start up when the wind tunnel is empty. Your task is to evaluate whether the readings provided by the Pitot probe are sensible to check whether it is working correctly. You can neglect boundary-layer effects throughout this question.