Features Of Turbofan Aircraft Jet Engines
For those who are looking to source components for aircraft engines they would be aware of the turbofan and the function it offers to a jet engine. This air compression system was developed in 2011 and it is found in engines of boats, cars and an air powered vehicle that are created for high performance. Hence, turbofan fitted helicopters or hovercrafts are also in vogue.
This system has been developed as a modified form of turboprop or turbojet engines which are capable of running the aircraft at commercial speeds. Such a component helps to increase the fuel efficiency of aircrafts as well as reduce noise levels. The turbofan is also found in gas turbine engines that are found in subsonic military aircrafts.
Features of turbofan engine design
These engine designs have much evolved from the early workings and features from the thirties and sixties. The basic turbofan engine comprises of a front mounted turbine that works by pulling in the air and channeling it in two directions mainly. A portion of air gets channelized to a central combustion chamber. Here it gets heated by the fuel that is burnt and the hot air leaves by a jet nozzle that is located at the rear. The air that remains gets channeled around which circulates around the combustion chamber. It then mixes with exhaust gases and the exhaust turbine then pushes it out. This mechanism helps to step up the thrust capability of the engine. It also reduces noise levels and cooler combustion chamber as well. With such engines that are also known as bypass turbofans, the ratio of bypass air that is channelized around the engine as compared to the air used for combustion is around 8 to 1 or even higher.
With the turbofan engine, there was a significant improvement, especially over the existing piston-driven engines. With the turbofan engine direction of motion remained in one direction which helped to reduce aircraft vibration greatly. The parts of such an engine rotate in one direction and with the same velocity. Today the modern turbofan engines have more evolved functions. They come with gearbox controls that help to increase the efficiency of fuel usage, by about a marked difference of 12% and more. The noise levels are reduced much more and so are the waste gas emissions. For such reasons, it makes sense for modern aircrafts to be equipped with such an engine system.