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Catalog #: 173041
Catagory: Aircraft -->Engine And Parts

TrueBlue's Price: 120,000 USD
Date Added: November 27, 2024

3 C250-C20B Allison Engines located in Europe price $120,000 C250-C20B Logbook: Available Condition: SV Quantity: 3 Units The C250-C20B is a turboshaft engine developed by Allison Engine Company (now part of Rolls-Royce), specifically designed for use in various helicopter models. This engine is a member of the Allison C250 family of engines, known for their reliability and performance in aviation applications, particularly in rotorcraft. Below are the key characteristics, functions, physical location, and systems of the C250-C20B Allison Engine: 1. Characteristics: Type: Turboshaft engine Model: C250-C20B Power Output: Typically produces up to 420 shaft horsepower (shp). Weight: Approximately 375 pounds (170 kg), which is lightweight for its class, ensuring efficiency in helicopter performance. Turbine Configuration: It is a single-shaft engine, meaning there is a single rotating shaft that drives both the compressor and the power turbine. Fuel Type: The engine operates on Jet-A or Jet-A1 fuel, commonly used in aviation. Compressor: The engine uses a two-stage axial compressor to compress incoming air for combustion. Turbine: It has a single-stage turbine for driving the power shaft. Speed and RPM: The engine operates at high speeds, with a maximum turbine speed of around 41,000 RPM (depending on operational conditions). Cooling: The engine employs a centrifugal oil filter and uses a system of oil cooling to prevent overheating of critical engine parts. 2. Functions: Power Generation: The primary function of the C250-C20B engine is to provide power to the main rotor of a helicopter. This is achieved by converting the energy from the turbine combustion process into rotational energy via a shaft. Fuel Efficiency: Designed for fuel efficiency to optimize the aircrafts operational range and endurance. Reliability: The C250-C20B is known for its robust design and high reliability, making it suitable for both military and civilian applications. It is designed to endure extreme conditions, including high temperatures, pressure, and vibration, all typical in rotorcraft operations. Performance in Helicopter Operations: The engine is used in helicopter lift-off, cruise, and hover operations. It is engineered for high performance at various altitudes and weather conditions, often in rotorcraft with missions such as search and rescue, transport, and military operations. 3. Physical Location in the Equipment: Mounting: The C250-C20B engine is typically located in the engine compartment of the helicopter, generally mounted in the forward section or rear of the fuselage, depending on the helicopter design. Drive System: The engine is directly connected to the main rotor via the transmission system (power shaft). The turbines power is transferred to the helicopters rotor system to produce thrust and lift. Exhaust: The exhaust of the engine is directed through a dedicated exhaust duct, generally located in the tail section or under the fuselage, depending on the design of the aircraft. 4. Systems Involved: Power Train: The C250-C20B engine is integrated into the powertrain system of the helicopter, where it transfers its mechanical energy via a shaft to the main rotor transmission and other components such as the tail rotor or auxiliary power units (APU). Fuel System: The engine is supported by a fuel system that ensures proper delivery of aviation fuel to the engines combustion chambers, including fuel pumps, filters, and lines. Lubrication System: The engine has a dedicated oil lubrication system designed to maintain the engines moving parts, including bearings and turbines, ensuring smooth operation and heat management. Cooling System: A cooling system that manages the heat produced by the combustion process. This system is essential to maintain safe operating temperatures in both the engine and associated components. Electrical System: The engine may be integrated into the electrical system of the aircraft to support starters and other electrical needs. Controls and Monitoring: Electronic Control Unit (ECU): The engine is equipped with an ECU that monitors and adjusts the performance of the engine, optimizing fuel usage, maintaining the proper turbine speed, and monitoring health parameters. Turbine Temperature Sensors: These sensors provide real-time data to ensure safe operating temperatures are maintained. 5. Applications: Helicopter Models: The C250-C20B engine is used in several helicopter models, particularly in the Bell 205 and Bell 212 series, among others. Military and Civil Use: It has been used in both military and civilian applications, including search and rescue, cargo transport, and military reconnaissance missions. In summary, the Allison C250-C20B is a high-performance turboshaft engine known for its fuel efficiency, reliability, and versatility in helicopter operations. It functions as the power source for the helicopters main rotor, is physically housed in the engine compartment, and is integrated into the aircrafts power, fuel, and monitoring systems. Its design and operational characteristics make it ideal for both civil and military aviation use.

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