Danfoss Motor Introduces The Type Of Jet Motor
The Danfoss Motor description: All jet motors and gas turbines work in much the same way (intake air through the air intake, compress air, burn fuel, and allow the exhaust to expand through the turbine), so they share five key components: one intake The port, a compressor, the combustion chamber and the turbine (in this order), drive the shaft through them.
But there are similarities. Different types of motors have additional components (driven by the turbine), the inlets operate in different ways, there may be more than one combustion chamber, and there may be two or more compressors and multiple turbines. The application (the work that the motor must do) is also very important. Aerospace motors are designed with carefully designed compromises: they need to generate maximum power from the smallest fuel (in other words, the highest efficiency) while being as small, light, and quiet as possible. Gas turbines used on the ground (eg, in power plants) do not necessarily need to be compromised in exactly the same way; they do not need to be small or light, but they of course still require maximum power and efficiency.
Turbojet motor
Whittle’s original design, known as the turbojet motor, is still widely used today. The turbojet is the simplest jet motor based on a gas turbine: it is a basic “rocket” jet that moves the aircraft forward by jetting a hot jet of air. The exhaust leaving the motor is much faster than the cold air entering the motor – this is how the turbojet produces thrust. In a turbojet motor, all turbines must do to power the compressor, thus obtaining relatively little energy from the exhaust injector.
Turbojet motors are the basic general-purpose jet motors that always produce stable power, so they are suitable for small, low-speed jets that do not require anything particularly significant (such as sudden acceleration or carrying large amounts of cargo). The motor we explained and explained above is an example. Read more about the NASA turbojet (including the animation motor you can play).
Turbine shaft motor
You might not think that helicopters are driven by jet motors – they have all the huge rotors that do all the work there – but you are wrong: the rotor is powered by one or two gas turbine motors called turbine shafts. Turbine shafts are very different from turbojet motors because the exhaust generated by the exhaust gases is relatively small. In contrast, a turbine in a turbojet captures most of the power and rotates the transmission and one or more gearboxes of the rotating rotor through its drive shaft. In addition to helicopters, you can find turboshaft motors on trains, tanks and boats. A gas turbine motor installed in a power plant is also a turbine shaft.
Turboprop motor
Modern aircraft with propellers typically use turboprop motors. It is similar to a turbine shaft in a helicopter, but it does not power the overhead rotor, but the internal turbine rotates the propeller mounted on the front to propel the aircraft forward. Unlike a turboshaft, a turboprop does produce some forward thrust from its exhaust, but most of the thrust comes from the propeller. Because propeller-driven aircraft fly slower, they waste less energy resistance (air resistance), which makes them very effective for main cargo aircraft and other small light aircraft. However, the propeller itself generates a lot of air resistance, which is one of the reasons for the development of turbofans.
Turbofan motor
The giant passenger aircraft has a huge fan installed at the front, which is like an ultra-efficient propeller. Fans work in two ways. They slightly increase the air flowing through the center (core) of the motor, using the same fuel to generate more thrust (which makes them more efficient). They also blow some air outside the main motor, completely “bypassing” the core and producing a propeller-like air return. In other words, the thrust generated by the turbofan is partially like a turbojet, partly like a turboprop. The low bypass turbofan motor sends almost all of the air through the core, while the high bypass turbofan sends more air around it. Impressive power and efficiency make the turbofan motor the motor of choice for a variety of motors, from passenger jets (usually using high bypass) to jet fighters (low bypass). The bypass design also cools the jet motor and makes it quieter.
Jet motors bleed at high speeds. In theory, if you design the air intake to a fast-thinning nozzle, you can automatically compress the air intake without the need for a compressor or turbine to power it. motors that work this way are called ramjet motors, and because they require fast air travel, they are ideal for supersonic and supersonic (faster than sound) aircraft. When entering the motor, the air moves faster than the sound, is compressed and decelerates significantly, reaches subsonic speed, mixes with fuel, and is ignited by a device called a flame mount, producing a rocket-like similar to that of a classic turbojet motor. exhaust. Ramjets are often used in rockets and missile motors, but because they “breath” air, they cannot be used in space. Supersonic vehicles are similar, but supersonic air does not decelerate like an motor. By maintaining the supersonic speed, the air leaves at a higher speed, allowing the aircraft to be much faster than an airplane driven by a ramjet motor (in theory, up to 15 Mach, or 15 times the speed of sound in the “supersonic” region).
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