Research Projects

Cryogenic HAT facility in IPRC is comprised of vacuum system, diffuser system, cooling system and ejector system along with propellant filling /feed circuits, structural components, safety systems and instrumentation systems for the Static testing and Qualification of Cryogenic Engines. The major components of the vacuum system are the vacuum chamber inside which the test specimen is mounted and the Ejector for chamber evacuation. This ejector has a clustered nozzle configuration for admitting constant GN2 into the chamber through the pneumaticlines, field elements (Electro pneumaticvalves and Control valves) and Sensing devices for process parameter monitoring. A single input based Closedloop Proportional Integral Derivative (PID) controller is deployed for the control valve in order to attain the required flowrate with theoretically estimated static set point. The Proportional, Integral and Derivative coefficients are determined offline.