Are all planes and helicopters made of aluminum?
Early aircraft were steel tubing covered with fabric, like early tail draggers such as the Piper Cub, Aeronca Champ, and the CitabriaBut not made all of steelSteel is strong and durable but just too heavy a material for the weight trade offAircraft today are mostly made of aluminum with other materials such as composites and titaniumSome engine components and small pieces such as hinges, cables and fasteners are made of steel for durabilityThe new Dreamliner B787 for instance, is 50% composite; carbon fiber reinforced plastic.
gosh i was seeing this movie 2 days back
