FEM analysis of LTA-7 horizontal tail

Mary, Shini Mole and Naganarayana, BP and Pratap, G (1994) FEM analysis of LTA-7 horizontal tail. Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

A finite element structural analysis of the stabilizer portion of the horizontal tail has been performed using the MSC/NASTRAN package. The critical loading case is identified by subjecting the structure to loading corresponding to several different load cases. From NASTRAN stress output for these cases, the Va maneuvering 5700 kg ., n = 1.0, 0.2412c, elevator up deflection is seen to be critical. Stresses from this case are used to compute the margins in buckling for skin panels and shear webs. It is seen that stresses are within allowable limits but from the buckling point of view, while the skin panels are over-designed, the midspar web is under-designed and must be stiffened. Comparisons with the stress analysis results from the simple bending theory/shear flow analysis carried out by the ASDE/CAU design group show that there is scope for improvement in the design.

Item Type: Monograph (Project Report)
Uncontrolled Keywords: FEM stress analysis;Horizontal tail;LTA-7;MSC-XL;MSC/NASTRAN
Subjects: ENGINEERING > Structural Mechanics
Depositing User: Smt Bhagya Rekha KA
Date Deposited: 22 Apr 2013 08:08
Last Modified: 22 Apr 2013 08:08
URI: http://nal-ir.nal.res.in/id/eprint/11604

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