IJBTT

Structural Design and Analysis of Mounting Structure for Flight Vehicle

	International Journal of Engineering Trends and Technology (IJETT)
	© 2014 by IJETT Journal
	Volume-8 Number-7
	Year of Publication : 2014
	Authors : Yalla Shirley , N.Jeevan Kumar
	10.14445/22315381/IJETT-V8P267

Citation 

Yalla Shirley , N.Jeevan Kumar . "Structural Design and Analysis of Mounting Structure for Flight Vehicle", International Journal of Engineering Trends and Technology(IJETT), V8(7),372-394 February 2014. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Abstract

The project deals with the structural design and analysis of mounting structure for assembling of electronic packages in a flight vehicle section. The flight vehicle consists of various sections assembled to form an integrated vehicle. Different types of electronic packages to meet the requirements are assembled in different flight vehicle sections based on the flight vehicle configuration. One such type of flight vehicle section needs to be assembled with different electronic packages. The packages have to be rigidly mounted on a mounting structure in the flight vehicle section. The launch of a flight vehicle can be one of the most rigorous loads environments for which to design hardware. The high random vibration loads imparted on vehicle by the electronic packages during launch create an adverse design requirement that all hardware have a natural frequency greater than that of the vehicle, in order to avoid damage and failure due to dynamic coupling. Maximizing natural frequency is generally accomplished by creating as stiff and lightweight a design as possible. However, designing for the resultant high loads also requires a high strength intermediate structure for mounting the various components and subassemblies to the vehicle structure. These two opposing design requirements drive an optimization between a lightweight and high strength structure. The project comprises of design and analysis of the mounting structure. The mounting structure has to be designed to withstand the loads generated by the electronic packages. It also includes the design of mounting plate and brackets to withstand the given loads using CAD and CAE tools. Unigraphics software is used for modeling the flight vehicle section, packages and the mounting plate with brackets. The mounting plate and brackets are imported to ANSYS software for structural analysis. The mounting plate with brackets is applied with specified loads in different flight conditions like Pitch, Yaw and Roll moments. A finite element model was created to manually iterate several aspects of the design, such as geometric characteristics like thicknesses and fillet radii, to analyze the effects on weight and stress and converge on a successful design .The project elucides in detail the methodology adopted for the analysis of mounting structures for flight vehicles.

References

1.Theodore J. Hartka, David F. Persons, and Edward D. Schaefer“Robert A. McDonald "Establishing Mission Requirements Based on Consideration of Aircraft Operations" Vol. 50, No. 3, May 2013, pp. 741-751.
2.Young-Ho Na and SangJoon Shin "Equivalent-Plate Analysis for a Composite Wing with a Control Surface", Journal of Aircraft, Vol. 50, No. 3, May 2013, pp. 853-862.
3.Etienne Coetzee, Bernd Krauskopf, and Mark Lowenberg. "Continuation Analysis of Aircraft Ground Loads During High-Speed Turns", Vol. 50, No. 1, January 2013, pp. 217-231.
4. Caroline Rupp “Structural Analysis Study and Design Optimization of an Intermediate Mounting Structure for Space Vehicle Components” May 2012.
5.AnkitChiplunkar, RamanathPai, AnirudhSubramanyam “Analysis and Validation of the Structure of Pratham” Vol 3 No 2, September 2011.
6.Evan R. Ulrich, J. Sean Humbert, and Darryll J. Pines. "Pitch and Heave Control of Robotic Samara Micro Air Vehicles", Vol. 47, No. 4, July 2010, pp. 1290-1299.
7. S. A. Fazelzadeh, P. Marzocca, E. Rashidi, and A. Mazidi. "Effects of Rolling Maneuver on Divergence and Flutter of Aircraft Wing Store", Vol. 47, No. 1, January 2010, pp. 64-70.
8.Santhosh M. Kumar , Technical Support Engineer , Ansys India “ Analyzing Random Vibration Fatigue ” Vol 2 , No 3 , Nov 2008
9.Car Cheng Ph.D , Jeff Crull “ Random Vibration Analysis of Dual 101 EM Assembly ” Vol 40 No 3 , Jan 2006.
10.A. M. Veprik “Vibration Protection of Critical Components of Electronic Equipment in Harsh Environmental Conditiond” Journal Of Sound and Vibration, Jan (2003) 259(1) p.p 161-175.
11. William E. Skullney, Harry M. Kreitz, Jr., Mark J. Harold, Steven R. Vernon, Teresa M. Betenbaugh, Structural Design of the MSX Spacecraft” (1996) Vol 17 No 1

Keywords
PITCH, ROLL, YAW, PSD analysis.