Failure Analysis of AISI 302 Steel Compression Spring Used in Flush and Purge Valve of Liquid Engine

2015 ◽  
Vol 830-831 ◽  
pp. 705-708 ◽  
Author(s):  
Sushant Manwatkar ◽  
S.V.S. Narayana Murty ◽  
P. Ramesh Narayanan
Keyword(s):  
Stainless Steel ◽  
Failure Analysis ◽  
Launch Vehicle ◽  
Compression Spring ◽  
Metallurgical Analysis ◽  
Type Fracture ◽  
Compression Springs ◽  
Satellite Launch Vehicle

AISI 302 stainless steel is used for making compression springs for launch vehicle programmes. One such AISI 302 stainless steel compression spring used in flush and purge valve of liquid engine of a satellite launch vehicle failed during testing. The failure was at the second round of spring and it failed in a slanted type fracture. Detailed metallurgical analysis indicated that the failure was due to fatigue.

Failure Analysis of AISI 440C Steel Ball Screws Used in the Actuator System of a Satellite Launch Vehicle

2017 ◽  
Vol 17 (3) ◽  
pp. 505-512 ◽  
Author(s):  
Sushant K. Manwatkar ◽  
A. Bahrudheen ◽  
Shashi Bhushan Tiwari ◽  
S. V. S. Narayana Murty ◽  
P. Ramesh Narayanan
Keyword(s):  
Failure Analysis ◽  
Launch Vehicle ◽  
Steel Ball ◽  
Actuator System ◽  
Satellite Launch Vehicle

Metallurgical Analysis of Cracked AA7075 Aluminum Alloy Component Used in Control System of a Satellite Launch Vehicle

2016 ◽  
Vol 16 (6) ◽  
pp. 1141-1149 ◽  
Author(s):  
Sushant K. Manwatkar ◽  
J. Srinath ◽  
S. V. S. Narayana Murty ◽  
P. Ramesh Narayanan ◽  
S. C. Sharma ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Control System ◽  
Launch Vehicle ◽  
Alloy Component ◽  
Metallurgical Analysis ◽  
Satellite Launch Vehicle

Metallurgical Analysis of Failed AISI 304L Stainless Steel Tubes Used in Launch Vehicle Applications

2015 ◽  
Vol 4 (6) ◽  
pp. 497-507 ◽  
Author(s):  
Sushant K. Manwatkar ◽  
Kailas S. Kuhite ◽  
S. V. S. Narayana Murty ◽  
P. Ramesh Narayanan
Keyword(s):  
Stainless Steel ◽  
Launch Vehicle ◽  
304L Stainless Steel ◽  
Steel Tubes ◽  
Aisi 304L ◽  
Metallurgical Analysis ◽  
Aisi 304L Stainless Steel

Metallurgical Analysis of a Failed 17-4 PH Stainless Steel Pyro Bolt Used in Launch Vehicle Separation Systems

2015 ◽  
Vol 4 (1) ◽  
pp. MPC20140063
Author(s):  
J. Srinath ◽  
Sushant K. Manwatkar ◽  
S. V. S. Narayana Murty ◽  
P. Ramesh Narayanan ◽  
S. C. Sharma ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Launch Vehicle ◽  
Separation Systems ◽  
Metallurgical Analysis

Reliability and Safety Assessments of the Satellite Separation Process of a Typical Launch Vehicle

2011 ◽  
Vol 9 (4) ◽  
pp. 369-382 ◽  
Author(s):  
J Singaravelu ◽  
D Jeyakumar ◽  
B Nageswara Rao
Keyword(s):  
Empirical Relation ◽  
Launch Vehicle ◽  
Separation Process ◽  
The Body ◽  
Physical Parameters ◽  
Separation Systems ◽  
Compression Spring ◽  
Safety Assessments ◽  
Satellite Launch Vehicle ◽  
Spring Mechanism

This paper presents in brief the formulation of the rigid body separation dynamics that are useful for the design and analysis of satellite separation systems using the helical compression spring mechanism. In satellite launch vehicle chronology, safe injection of the satellite into the desirable orbit is an important final task. The body rate of the satellite during separation should be within the satellite control capabilities. The Taguchi method is employed in order to understand the influencing parameters in the separation process. Statistical analysis has been carried out to identify the probability distribution function for reliability and safety assessment of the satellite separation of a launch vehicle. Using the response surface method (RSM), an empirical relation is obtained for the body rate of the satellite in terms of the 28 physical parameters. The RSM results are compared with the Taguchi simulation results. Reliability and safety assessments are made on the satellite separation of a typical launch vehicle.

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