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Testing for Aeronautics and Aerospace > ISRO (India) space simulator


ACS space simulator delivered to the ISRO Satellite Centre in Bangalore, named HVT400MC,  is one of the two largest space simulators existing in Asia and the most technologically advanced in the world.
The simulator consists in a stainless steel structure that encases the area in which the tests are conducted, a cylindrically shaped chamber 7 m in diameter and 11 m long.The system is fitted with 4 cryogenic pumps that generate the high vacuum required with a pumping capacity of 60.000 L/sec each.
Temperatures inside the cryogenic pumps drop to 10° Kelvin, corresponding to -263°C, through the use of helium, while the vacuum value reached is 10-7 mbar.The thermal system includes 15 independent circuits capable of reproducing the conditions that surround satellites when in space. The circuits gradually reproduce the entire range of temperatures experienced in space, from those on the side that is lit by the sun to those on the dark side, namely from -180°C to +180°C. Cooling is provided by liquid nitrogen stored in 4 large containers (22 meters tall) that can stock up to 500,000 liters of nitrogen.
 
The space simulator is run and supervised by a control and management system consisting of an array of over 40 electric panels for the distribution of power and for the control of the systems with PLC logic, data acquisition racks (almost 800 temperatures), SW for overall system monitoring, topped by synoptics and redundant systems. All of this is distributed over a control console consisting of 5 PCs as well as another 12 stations distributed on two floors and interconnected via intranet. The system also allows for data exchange via optic fiber cable with the satellite’s control system.

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