Thrust reversers help reduce an aircraft’s landing distance by redirecting engine thrust to oppose the aircraft’s forward motion after touchdown. By supplementing wheel brakes and other deceleration systems, thrust reversers improve stopping performance and reduce brake wear. Understanding the different thrust reverser designs and their operation is important for safe aircraft operation and effective maintenance. … Read more
Light-Sport Aircraft Engines Light-sport/ultralight aircraft engines can be classified by several methods, such as by operating cycles, cylinder arrangement, and air or water cooled. An inline engine generally has two cylinders, is two-cycle, and is available in several horsepower ranges. These engines may be either liquid cooled, air cooled, or a combination of both. They … Read more
Turbine engine inlet systems direct the correct quantity of clean, uniform airflow to the engine compressor under a wide range of operating conditions. Aircraft maintenance technicians should understand the different inlet designs, airflow characteristics, and protective features to ensure safe operation and optimum engine performance. Introduction The engine inlet of a turbine engine is designed … Read more
Fuel-injection systems provide more precise fuel metering and distribution than conventional carburetors. Two common aircraft fuel-injection systems are the Bendix/Precision RSA system and the Continental/TCM system, both of which continuously meter fuel in proportion to engine airflow. The fuel-injection system has many advantages over a conventional carburetor system. There is less danger of induction system … Read more
Aircraft powerplant electrical systems depend on effective bonding and grounding to ensure safe and reliable operation. Proper bonding and grounding connections provide low-resistance current return paths, reduce electromagnetic interference, protect against static electricity and lightning effects, and help maintain the performance of electrical and electronic equipment. The following sections explain the principles, installation methods, and … Read more
Aircraft carburetors use several interconnected systems to provide the correct air-fuel mixture under all operating conditions. These systems work together to supply fuel during starting, idling, acceleration, cruising, and high-power operation. To provide for engine operation under various loads and at different engine speeds, each carburetor has six systems: Each of these systems has a … Read more
In some engines, the lubrication system is the wet-sump type. There are relatively few engines using a wet-sump type of oil system. A schematic diagram of a wet-sump oil system is shown in Figure. The components of a wet-sump system are similar to those of a dry-sump system. The major difference between the two systems … Read more
Turboprop engines combine a gas turbine engine with a propeller to provide efficient propulsion for a wide range of aircraft. This section explains the operating principles of turboprop engines, the coordination between the engine and propeller control systems, and the major components involved in power transmission and propeller operation. Turboprop engines are used for many … Read more
Mounts for Reciprocating Engines Most aircraft equipped with reciprocating engines use an engine mount structure made of welded steel tubing. The mount is constructed in one or more sections that incorporate the engine mount ring, bracing members (V-struts), and fittings for attaching the mount to the wing nacelle. The engine mounts are usually secured to … Read more
The magneto, a special type of engine-driven alternating current (AC) generator, uses a permanent magnet as a source of energy. By using a permanent magnet to provide a basic magnetic field, a coil of wire to provide concentrated lengths of conductor, and relative movement between the magnetic field and conductor, current is generated in the … Read more
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Aero Guide provides structured aviation study materials, technical explanations, and educational resources based on FAA handbooks and other aviation references. Explore aviation fundamentals, aircraft systems, airframe structures, powerplant systems, weight and balance, and more to support your aviation learning journey.
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