Eaton Char-Lynn Motor – The Principle Of The Turboshaft Engine

      Eaton Char-lynn Motor     Overview: A turboshaft engine is a gas turbine engine that uses gas to power the output shaft of a power turbine and is the main engine of the helicopter. The turboshaft engine began to be mounted on a helicopter for the first flight in December 1951. At that time it was not self-contained and belonged to a turboprop engine. Later, as helicopters became more common in military and national economies, turboshaft engines gained independence.

　　Both the turboshaft engine and the turboprop engine evolved from the principle of a turbofan engine, which turned the fan into a propeller, while the former turned the fan into a helicopter rotor. Turbine shaft engines also have basic configurations of gas generators such as intake ports, compressors, combustion chambers, and tail nozzles, but are generally equipped with free turbines in addition to conventional turbines. The ordinary turbine in front drives the compressor to keep the engine working; the free turbine behind, the gas works in it, and the drive shaft is specially used to drive the rotor of the helicopter to rotate, so that it can take off.

　　In addition, the gas flowing out of the turbine is ejected through the tail pipe to generate a certain thrust, but since the jet velocity is not large, the thrust is small. Turbine shaft engines are mainly used for helicopters, and the work of helicopters puts some special requirements on the engine. Helicopters are generally used to perform short-haul flights. The engine is often in a state of take-off, hovering, climbing, etc., which requires components to have good resistance to low-frequency fatigue. Helicopters are often close to the ground, and the engine is often eroded by foreign objects, so it is required to have good erosion resistance. Generally, the air intake part is often equipped with protective devices.

　　Friends driving turbocharged models, do not catch fire on the cold start in the winter morning, so the damage to the turbine is particularly serious, especially on the fire, guess 3-5 thousand rpm, do not do this, in addition, When the turbocharger is in operation, its working speed is very high, and its speed can reach 180,000 to 200,000 revolutions per minute under full load operation.

　　The high-speed impeller shaft requires very high dynamic balance. In daily use, any operation that is not conducive to lubrication and heat dissipation will eventually cause a certain degree of damage to the supercharger, thus shortening the service life of the supercharger.

https://www.xjetl.com