What is the material used in construction of apache helicopter?

The AH-64 Apache is primarily made of advanced composite materials, including carbon fibre-reinforced polymers, glass fibre-reinforced polymers, and honeycomb structures. These composite materials provide the helicopter with significant advantages, including reduced weight, increased strength and durability, improved corrosion resistance, and reduced radar signature.

In addition, the Apache's rotor blades are made of a composite material called titanium-reinforced fiberglass, which provides a combination of strength and flexibility. The rotor blades are also equipped with elastomeric bearings, which help reduce vibration and noise.

Overall, the Apache's advanced composite materials contribute to its overall performance, survivability, and reliability, making it one of the most capable and versatile attack helicopters in the world.