What is the primary load carrying structure in aircrafts? What material is it usually made of?
That would be the wing carry through member on low wing aircraft or the landing gear support on high wing aircraft. It supports; The fuselage The landing gear (most aircraft) The main wings The weight of the aircraft on the ground Most are made up of aluminium and steel cast components. More exotic materials such as carbon fibre and titanium may also be found in this structure. On some lighter aircraft the carry through can be fabricated from an assortment of aluminium components and panels that are riveted together. And some use structural adhesives in addition to the rivets and other various fasteners. With the exception of the engines this is usually the heaviest component in ‘most’ aircraft.
