Ignition Fuel and Lubrification of Propellers
There are three major engine systems necessary to keep an internal combustion engine running.
They are the ignition system, the lubrication system, and the fuel
An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Most aircraft engines are either piston
Types of Propeller Engines
For forty years after that first Wright brothers flight, airplanes exclusively employed internal combustion engines that turned attached propellers in order to generate thrust. Remarkably, the majority of general aviation and private aircraft are still powered by internal combustion piston engines and propellers today.
Generally speaking, airplane piston engines function much like the common automobile engine. Taking in air from the surrounding environment and mixing it with fuel, these engines work by burning that fuel to produce heated gas exhaust that moves a piston that is attached to the crankshaft. While the automotive drivetrain uses the crankshaft to turn the wheels of the car, the airplane’s crankshaft is connected directly to one or more propellers. There are some differences between aircraft engines and automobile engines. Aircraft engines employ different types of ignition systems and lubrication systems as well as systems to prevent the buildup of ice at the air intake.
Although piston propeller engines come in a wide range of sizes, the majority of larger aircraft now have some form of turbine engine. Smaller aircraft, however, can soar through the air under the power of smaller internal combustion piston engines.
There is a wide verity of propellers used on aircraft today. In the Spartan Aviation Maintenance Technology program, you will learn the purpose and function of propellers such as:
Fixed-Pitch
Ground-Adjustable Propeller
Controllable-Pitch Propellers
Constant-Speed Propellers
Feathering Propellers
Reverse-Pitch Propellers
Types of Turbine Engines
Like traditional piston engines, turbine engines work by combining air and fuel for propulsive combustion. However, the gas turbines of turbine engines provide continuous combustion to drive a compressor that raises air pressure to extreme degrees to provide exceptional power. Identified by the path that air takes through the engine and the ways in which aircraft movement is produced, turbine engines fall into one of the four following categories:
Turboprop – This form of turbine engine connects directly to a gearing system that turns a propeller in much the same way that a traditional piston engine does. The gearbox of a turboprop plane slows down its spinning prop shaft in order to properly drive the propeller.
Turbojet – First developed by German and British aeronautic scientists in the ramp up to World War II, the turbojet moves through the air on the thrust of the powerful gas streams that it generates. Although extremely powerful, the turbojet has traditionally required prodigious amounts of fuel.
Turboshaft Engine – Most commonly employed for helicopter operation, the turboshaft aircraft engine is much like the turboprop engine except it is designed to turn a transmission which in turn is connected to the helicopters rotor system.
Turbofan Engine – Employing massive fans to facilitate air intake, the turbofan jet engine was designed to combine the best features of the turboprop and the turbojet. Benefits of this engine type include significant thrust production at low speeds and relatively quiet operation. For these reasons among others, turbofan engines power the vast majority of modern commercial airliners. Boeing was the first company to employ turbofan engines, mounting them to its 737-300 aircraft in the early 1980s. In 2018, Boeing released the massive GE9X turbofan engine to power its 777X aircraft. The largest turbine engine in the world, the GE9X is roughly the same width as the fuselage of the Boeing 737!
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This is an Aerospace engineering concerned with the development of aircraft and spacecraft, focused on designing aeroplane and space shutlle and it is a study of all the flying wing used within the earth's atmosphere. Also dealing with the Avionic systems that includes communications, navigation, the display and management of multiple systems. Also dealing with Aircraft mishap such as Accident and Serious Incident.
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