• Demonstrates the thermodynamic and fluid mechanics of the adiabatic expansion of air through subsonic and supersonic nozzles. 
• Includes interchangeable convergent, convergent - divergent Laval nozzles and convergent parallel nozzle.Compressed air passes through the pressure regulator and an isolating valve. 
• The airflow then settles as it passes along a horizontal pipe, through an orifice and out to atmosphere. 
• The temperature and pressure displays accurately measure temperatures and pressures at key points around the apparatus, including the pressures around the orifice which students use to determine overall mass flow. 
• For ease of visibility and for good engineering practice, the analogue gauge also shows pressure in the chest. 
• A stainless-steel probe on a manually adjustable, vertical traverse measures the pressure distribution along the axis of the nozzle. 
• A digital indicator measures the probe position in the nozzle. 

Dimensions and weight:

Length 2900 mm x depth 600 mm x height 1730 mm and 123 kg 

Its floor-standing frame holds:

A pressure chest with a removable lid and nozzle traverse mechanism. A useful worktop. An instrument frame with digital pressure and temperature displays. A pressure regulator to maintain the inlet/upstream pressure, with an analogue reference pressure gauge. Three interchangeable, profiled and polished brass nozzles with mimics that fit on the traverse mechanism.