Advantages of Carbon Aircraft Brake Pads
Carbon aircraft brakes have many advantages if we compare them with steel brakes:
- Endurance: Durability of carbon brakes in comparison to steel brakes is almost double. Their longer life allows them twice the landings per overhaul in comparison to steel brakes.
- Lightweight and Environmental Friendly: Carbon brakes are marginally lighter as compared to steel brakes making their rate of fuel consumption lower. Lower fuel consumption results in lower carbon dioxide emission in the environment making their impact less hazardous on the environment.
- Efficiency: Carbon brakes absorb greater energy than steel brakes, making them yield better. Their effectiveness is not affected by temperature.
- Strength: Carbon brakes are stronger at high temperatures.
Production of Carbon Brake Pads
Carbon fiber produced either from PAN (Polyacrylonitrile) or petroleum is oxidized at lower temperatures and then carbonized at higher temperatures to remove non-carbon elements like nitrogen and hydrogen. The fibers are then performed in the shape of the desired brake disc and placed in a vacuum furnace using CVD (Chemical Vapor Deposition) and CVI (Chemical Vapor Infiltration).
The usual use of these processes is carbon deposition on the outside and inside of the product to add density. Hydrocarbon gasses like methane and propane are measured through the vacuum furnace at high temperatures and low pressures. The gases enter the preforms to build up the density within the brake pads. Many hydrocarbon compounds are made during the process.
The vacuum systems used for the process of production of aircraft carbon brakes must be robust, durable, and should be able to handle the hydrocarbons formed during the process.
Oil-Sealed vs Dry Vacuum Pumps
Oil-sealed rotary vane pumps are renowned for their performance and have become the industry standard for many applications due to their flexibility and high reliability. The oil not only cools and lubricates the pump, but it also helps to seal the gap between the rotor, stator, and the blades. This enables the pump to achieve a good alternate vacuum. Their mechanism is quite simple, and so is their maintenance. They can be easily maintained without having them send to the manufacturer.
Dry pumps, on the other hand, do not use any oil or fluids to create a vacuum. This results in keeping the process from contaminating from oils. To achieve higher vacuum ranges, the pumps are fitted with booster pumps. But the maintenance of these can be difficult as special tool kits are needed, and they can also be required to send back to a rebuilder.
Economy Vacuum Systems
Economy has been providing vacuum systems since carbon deposition began. At Economy, we supply these pumps under controlled procedures and ensure that each one is tested to our highest quality standards before being delivered to customers. Our simple yet sturdy package is built to withstand the hardships of aircraft brake productions. Our rotary pumps can also be easily disassembled and assembled on the site with the least training.