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Concept
Aérostructures
Résumé
An aerostructure is a component of an aircraft's airframe. This may include all or part of the fuselage, wings, or flight control surfaces. Companies that specialize in constructing these components are referred to as "aerostructures manufacturers", though many larger aerospace firms with a more diversified product portfolio also build aerostructures.
Mechanical testing of the individual components or complete structure is carried out on a Universal Testing Machine. Test carried out include tensile, compression, flexure, fatigue, impact, compression after impact. Before testing the component, aerospace engineers build finite element models to simulate the reality.
Airplanes designed for civilian use are often cheaper than military aircraft. Smaller passenger airplanes are used for short distance, transcontinental transport. It is more cost efficient for airlines and there is less demand for aircraft transportation at these distances as people can, while inconvenient, drive these distances. While bigger airplanes are manufactured for intercontinental transport, so more passengers can be carried at one time, money can be saved on fuel, and airliners do not have to pay as many pilots. Cargo planes are usually built to be bigger than the average jet. They have a lot of space and large dimensions, so they can carry a lot of weight and a large volume of cargo in one trip. They have large wingspans, a very large cargo hold, and a very tall vertical fin. They are not built to accommodate passengers except for the pilots, so the use of the cargo hold is much more efficient. There does not need to be room for seats and food and bathrooms for everybody, so the companies made a design that optimizes the space in the aircraft.
The YC-14 Prototype was a prototype plane that was being designed by Boeing specifically for the US Air Force. There were a lot of different designs that were considered and different technologies that were used specifically for carrying tanks and paratroopers.
Source officielle
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