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Dynamic Response of a Launch Vehicle to Wind Gust
Aayillia K Jayasidhan,  Jancy Rose K,  R.Neetha
The computation of dynamic loads on a launch vehicle due to atmospheric gust is essential for the design of launch vehicle structural systems. Launch vehicle can encounter gusts at any time during the flight. The gust models are of different patterns. This results in analysing many cases to identify the critical load condition for structural design of launch vehicle. Generating the finite element models at various time instances using the pre-processor of any standard FEM package and gust models of various patterns at critical flight instances are tedious and time consuming. A Multistage Launch Vehicle is analysed to study the gust response at various time instants during flight. Finite Element Model of the Launch Vehicle at lift off is generated using a standard FEM Package. A software called ‘GUST_SIMULATION’ is developed for generating finite element models at various time instances from the lift off model and for generating the gust models at various time instants. As large number of result files are generated automatically, post processing of the gust load analysis using FEM packages is time consuming. So, for extracting the gust response from the output file of the FEM package, another software ‘GUSTRUN’ is developed. The results are analyzed to get the critical load case.
Keywords- Launch Vehicle, Gust, mach number, flight conditions, Modal analysis, Transient response analysis
Unique Identification Number - IJEDR1503122Page Number(s) - 1-6Pubished in - Volume 3 | Issue 3 | September 2015DOI (Digital Object Identifier) -    Publisher - IJEDR (ISSN - 2321-9939)
Cite this Article
Aayillia K Jayasidhan,  Jancy Rose K,  R.Neetha,   "Dynamic Response of a Launch Vehicle to Wind Gust"
, International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.3, Issue 3, pp.1-6, September 2015, Available at :http://www.ijedr.org/papers/IJEDR1503122.pdf