Programmable Device Circuits and Systems

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Deflection and Distortion Analysis of Cryogenic Engine Test Assembly


Affiliations
1 Anna University of Technology Tirunelveli, Tamil Nadu, India
2 Department of Mechanical Engineering, Anna University of Technology Tirunelveli, Tamil Nadu, India
3 ISRO-LPSC, Mahendragiri, Tirunelveli, Tamil Nadu, India
     

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The structural deflection problem has arisen in the CE20 engine (Cryogenic engine of 20 ton thrust) test facility in ISRO-LPSC. In this arrangement the nozzle is just inserted in the diffuser for about 35 mm and is having a radial clearance of only 10 mm. The engine along with the mounting arrangement is deflected due to its self weight. The deflection due to self weight is to be determined through relevant analysis and the interference of the engine with other equipments in the test rig to be studied. The deflection of entire system is analyzed as determinant and in-determinant structure. It is necessary to maintain the circularity of nozzle to get proper thrust for which it is designed so the ovality is analyzed by FEA.

Keywords

G.V.R.Rao Method, Structural Deflection, Ovality, FEA.
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  • Deflection and Distortion Analysis of Cryogenic Engine Test Assembly

Abstract Views: 166  |  PDF Views: 3

Authors

K. C. Ganesh
Anna University of Technology Tirunelveli, Tamil Nadu, India
G. Karthikeyan
Department of Mechanical Engineering, Anna University of Technology Tirunelveli, Tamil Nadu, India
D. Raja Manohar
ISRO-LPSC, Mahendragiri, Tirunelveli, Tamil Nadu, India

Abstract


The structural deflection problem has arisen in the CE20 engine (Cryogenic engine of 20 ton thrust) test facility in ISRO-LPSC. In this arrangement the nozzle is just inserted in the diffuser for about 35 mm and is having a radial clearance of only 10 mm. The engine along with the mounting arrangement is deflected due to its self weight. The deflection due to self weight is to be determined through relevant analysis and the interference of the engine with other equipments in the test rig to be studied. The deflection of entire system is analyzed as determinant and in-determinant structure. It is necessary to maintain the circularity of nozzle to get proper thrust for which it is designed so the ovality is analyzed by FEA.

Keywords


G.V.R.Rao Method, Structural Deflection, Ovality, FEA.