An Aircraft Tires is a special type of tire that is designed to support heavy loads for a short period of time. As an aircraft grows in weight, the number of tires increases and the more tires it has, the more evenly the weight is distributed. Airliner Tires are often made with hand-made rubber or an unreinforced natural rubber compound.
The raw material for making airliner tires is raw natural rubber, a hydrocarbon polymer with elastomeric properties. It is often referred to as "India rubber," "gum elastic," or "caoutchouc," and is obtained from the sap of Hevea brasiliensis trees. The natural rubber is a strong, durable material with excellent elasticity and tens strength. Unlike automobile tires, Aircraft Tires don't have tread grooves for maximum performance. They're made to perform to manufacturer specifications and are routinely checked and replaced when they exceed the manufacturer's service limit. Many aircraft tires are hand-made and may be hundreds of years old. Airline tires are typically hand-made and must meet strict specifications set by the FAA. Manufacturers of aircraft tires analyze both normal and emergency operations and then design tires that meet all of these requirements. They also consider the type of plane they're flying and what the most common operating conditions are for that aircraft model. Manufacturers can accurately predict the cost of the tires. Aircraft Tires are designed to withstand a maximum pressure of 800 psi or 55 bar without bursting. Airliner tires are usually inflated with nitrogen, a dry gas that minimizes the rate at which they expand. Several types of airliner tires have fusible plugs. These devices are generally made by raising the eutectic material to a temperature above its melting point and pouring it into a bore in the carrier member. Once it reaches this temperature, the material solidifies into a neat configuration. A typical fusible plug is a type A device that is serviceable, whereas a modified version may also be used. Another type of plug is an eutectic plug. This is a type of device that can be mounted in an airliner tire and automatically vent excess pressure due to heat from the wheel assembly. The fusible plug is designed to be easy to install and service and to have a minimum difference in temperature from the melting point. Modern Aircraft Tires typically have silica-based treads to reduce rolling resistance and increase wet grip. These treads are also able to withstand high impact loads during landing. To increase the performance of these tires, they also contain secondary fillers such as N134 carbon black and ethylene glycol. These fillers are added to the natural rubber compound at 45/10 phr and mixed with varying temperatures based on the mixing procedure that is most commonly used for silica-filled NR systems. Aside from their high-speed performance, airliner tires are also known for their safety and performance. They must withstand a wide range of operating conditions, including high angular velocities, heat generation, and abrasion. They must transmit high dynamic braking loads, and they must absorb impact shocks. Aircraft Tires are designed using the Finite Element Method, or FEM. The FEM predicts the stress-strain and heat-generation characteristics of individual components in aircraft tires. A tire structure is divided into finite elements (typically triangular or quadrangular). The FEM combines this information into a large series of linear equations, which are solved by computers. FEM simulations allow aircraft manufacturers to test the quality of their products and improve their performance.
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