Compressible flow range computer linked The phenomenon of compressible flow, sonic velocity and supersonic flow is possibly one of the most demanding areas of study for many students. The Base Unit consists of an instrumentation and control console that supplies a variable flow of compressed air to the range of optional modules, Brake Load Indicator: 0.01N resolution, Temperature Selector Switch, Thermocouple sockets: Six, Digital Tachometer Indicator, Return Air Flow meter: 0..12 g/s, Gauge Pressure: 0…1100 kN/m2, Includes 21 channel data logger With HDL software 48 screw terminals, push-on edge connection 20 external channels, 1 internal channel (mains Voltage) USB cable to PC USB port can be used via a USB splitter with up to 3 loggers. Utilises HDL software Nozzle performance test module: A series of convergent and convergentdivergent nozzles may be installed in one of two locations in a high pressure measuring chamber. A pressure regulator, throttle valve and back pressure valve allow the air flow rate, inlet and discharge (or back) pressure to be varied. Standard unit includes convergent –divergent ducts designed to produce Mach 1.0 at the throat and supersonic velocities downstream. 

1. 4 x Convergent-Divergent 
2. 1 x Micrometer Adjustment 
3. 1 x Weight Carrier 
4. 1 x 0.5N, 1 x 1N, 1 x 2N 
5. 1 x Drain Valve key 
6. 1 x Exhaust coupling assembly 

Experimental impulse turbine computer linked: The Impulse Turbine Module is a single stage, axial flow impulse machine, operating on air, for experimental and teaching purposes. An impulse turbine with 4 separate nozzles and control valves, a throttle valve and belt brake dynamometer. Inlet and outlet air temperatures are recorded allowing the temperature drop due to work output to be measured. 2 x Thermocouples,10N Load Cell maximum capacity, Turbine Speed: 35,000 rpm (continuous),Turbine Speed: 40,000 rpm (short periods only) Pressure Relief valve setting: 100kN/m2.Investigation of torque/speed and power/speed characteristics of a single stage impulse turbine. Application of the First Law of Thermodynamics to a simple open system undergoing a steady flow process. Determination of the isentropic efficiency of a turbine. Construction of retardation curve and from this the estimation of the effect of resistances due to mechanical and fluid friction.