In this open question, you are asked to propose a concept design and analyse a simple supersonic wind tunnel using the knowledge gained in compressible flows. The design is based on a wind tunnel using air. You should specify and justify your chosen air conditions at the inlet/intake to the tunnel and other appropriate data needed in your work. In the test section of the tunnel, the airflow should be supersonic (for your design you should choose one single value of Mach number in the range 1.2 to 5). The horizontal length of the test section in the air flow direction is set to 1m. To simplify the analysis, you can assume the airflow to be isentropic. The tasks of the assignment involve the followings, which should be included in your report: (a) Brief literature review on wind tunnels (b) (i) Specify and justify your chosen air conditions at the inlet/intake to the wind tunnel (air pressure, temperature, velocity etc...). (ii) Justify and select the different components/parts of your proposed wind tunnel. (c) Specify and justify the dimensions of the different components/parts of the proposed wind tunnel (d) Calculate and justify the test section cross-sectional area of the tunnel (e) Calculate and analyse the pressure and temperature at several locations of the wind tunnel (f) Calculate or specify/justify the mass flow rate of air (g) Provide a simple sketch of the entire wind tunnel system with all its components (h) Overall discussion and analysis of your design

Water is flowing through a 15-cm-diameter pipe that consists of a 3-m-long vertical and 2-m-long horizontal section with a 90° elbow at the exit to force the water to be discharged downward, as shown in Fig. P6–55, in the vertical direction. Water discharges to atmospheric air at a velocity of 5 m/s, and the mass of the pipe section when filled with water is 17 kg per meter length. Determine the moment acting at the intersection of the vertical and horizontal sections of the pipe (point A). What would your answer be if the flow were discharged upward instead of downward?

Which procedure can be applied to prepare small cooling holes in a turbine blade? Select one: ○ a. SLS O b. CAD ○ c. EDM O d. SEM

A dozer with as S-blade has pushed a normal load onto a level area. The height of this load measured at the inside edge of each track was 7 ft and 7.4 ft. The width of the load at the inside edge of each track was 8.1 ft and 8.4 ft. The greatest length of the pile was 16 ft. What is the capacity of the blade?