• MITHUN M
• Dr.Aswatha
• Shridhar Patil

The composite materials has extensive applications in the field of aerospace because of high strength to weight ratio. The spar is one such composite structural component of horizontal stabilizer which is located at the rear end of the helicopter. The spar resists the bending, twisting and axial loads on the stabilizer during flight there by maintaining the pitch of the helicopter at a set altitude. The spar is a sandwich composite manufactured by laying up of carbon epoxy prepregs. To carry out the layup of prepreg a layup tool is required. The layup tool material selection is an important aspect in manufacture of spar. The layup tool must have low weight to enable easy handling during layup activity and coefficient of thermal expansion (CTE) of the tool is to be matched with that of the spar as to reduce the effect of stress build up due to differential expansion.

Spar, Horizontal stabilizer, Carbon epoxy prepreg, Layup tool, weight, coefficient of thermal expansion

"Design of Composite Layup Tool for Horizontal Stabilizer Spar of Advanced Light Helicopter", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 5, page no.402-409, May-2018, Available :http://www.jetir.org/papers/JETIR1805490.pdf

"Design of Composite Layup Tool for Horizontal Stabilizer Spar of Advanced Light Helicopter", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 5, page no. pp402-409, May-2018, Available at : http://www.jetir.org/papers/JETIR1805490.pdf