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Vol.2 , No. 4, Publication Date: May 8, 2015, Page: 116-123
 facility to maintain a vacuum inside the test chamber and reducing exhaust backflow into the test chamber. The performance of the ejectors depends on mass flow rate of primary fluid and the secondary fluid. If the exhaust mass from the rocket engine is higher, then it requires high amount of driving fluid(gaseous nitrogen /steam / air) to maintain a vacuum inside the test chamber.If the exhaust mass from the rocket engine is reduced, then the requirement of driving fluid also be reduced. Cryogenic engine plume contains 98% of water molecules, which can be condensed to reduce the ejector load. In this investigation, exhaust mass from the engine is reduced by using the heat exchanger. Exhaust mass temperature also be reduced from 450K to 380 K to optimize the ejector performance. CFD analysis is used to determine the ejector performance at various inlet conditions.&picture=http://www.aascit.org/aascit/decorators/img/journal/902.jpg)
| [1] | J. Bruce Ralphin Rose, Department of Aeronautical Engineering, Regional Centre of Anna University, Tirunelveli, India. |
| [2] | C. Vijin, Department of Aeronautical Engineering, Regional Centre of Anna University, Tirunelveli, India. |
Ejectors are used in the High Altitude Test (HAT) facility to maintain a vacuum inside the test chamber and reducing exhaust backflow into the test chamber. The performance of the ejectors depends on mass flow rate of primary fluid and the secondary fluid. If the exhaust mass from the rocket engine is higher, then it requires high amount of driving fluid(gaseous nitrogen /steam / air) to maintain a vacuum inside the test chamber.If the exhaust mass from the rocket engine is reduced, then the requirement of driving fluid also be reduced. Cryogenic engine plume contains 98% of water molecules, which can be condensed to reduce the ejector load. In this investigation, exhaust mass from the engine is reduced by using the heat exchanger. Exhaust mass temperature also be reduced from 450K to 380 K to optimize the ejector performance. CFD analysis is used to determine the ejector performance at various inlet conditions.
Keywords
Ejector, Heat Exchanger, Cryogenic Rocket Engine, Gaseous Nitrogen
Reference
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