F300B Nozzle Pressure Distribution Module

F300B Nozzle Pressure Distribution Module

The F300B enables students to study the effect of inlet and outlet pressure ratio on the mass flow and pressure distribution in nozzles.

Operating with the F300 Base Unit and a normal laboratory compressed air supply the Module is supplied with one convergent and two convergent-divergent nozzles of identical throat diameter.

These nozzles can easily be interchanged and are designed to operate at different theoretical expansion ratios. Each nozzle is equipped with axial pressure tappings that can be connected to the 8 panel mounted pressure gauges.The unit is fully instrumented to measure pressures, mass flow and temperatures over a wide range of pressure ratios

F300B Nozzle Pressure Distribution Module

Two convergent-divergent nozzles of with the same throat diameter but different discharge area and a single convergent nozzle having the same diameter are supplied and fit in the common test section.

All three nozzles have axial static pressure tappings allowing the approach, throat and divergent section pressures to be measured. The variation of pressure ratio and mass flow may be investigated for all three nozzles.

Requires the F300 Compressible Flow Range base unit for operation.

  • Visual demonstration of nozzle choking
  • Visual demonstration of under expansion and over expansion with re-compression(shock wave)..
  • Investigation of the relationship between inlet pressure and mass flow rate.
  • Investigation of the relationship between outlet pressure and mass flow rate for:- A convergent nozzle, Two convergent-divergent nozzles
  • Investigation of  the pressure distribution in convergent and convergent-divergent nozzles over a variety of overall pressure ratios.


A: 220-240 Volts, Single Phase, 50Hz (With earth/ground).

    Line current up to 10A at 230v


B: 110-120 Volts, Single Phase, 60Hz (With earth/ground).

    Line current up to 20A at 110v

Compressed Air:

900kN/m2 (9 Bar Gauge) at up to 8g/s (400 litre/min free air)