BTEC HND Level 3 Unit 51: Aircraft Propulsion Systems Assignments Answers

Aircraft propulsion systems are important pieces of aviation technology. They provide the power necessary to move an aircraft through the air. There are a variety of different types of propulsion systems, and each has its own advantages and disadvantages. In this unit, we will take a closer look at some of the most common types of aircraft propulsion systems. We will also explore how they work and discuss their benefits and drawbacks. This unit will explore the function and operation of the major aircraft propulsion systems and their components.

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Assignment Activity 1: Examine the function and operation of aircraft fuel and engine control systems that support safe aircraft power plant operation.

The aircraft fuel system is responsible for delivering the appropriate type and quantity of fuel to the engine, under all conditions of flight. The system includes fuel tanks, fuel lines, pumps, and filters.

There are two main types of aircraft fuels: aviation gasoline and jet fuel. Aviation gasoline, or Avgas, is used in piston-engine aircraft. It is high-octane gasoline that allows these engines to run at higher speeds without knocking. Jet fuel, on the other hand, is used in turbine-engine aircraft. It is a kerosene-based fuel that can withstand higher temperatures than Avgas.

The quantity of fuel required by an aircraft depends on several factors, such as the size of the aircraft, the altitude at which it is flying, and the type of engine. The fuel system must be able to deliver enough fuel to meet the needs of the aircraft under all conditions.

The engine control system is responsible for controlling the engine’s power output and ensuring that it functions safely. The system includes sensors that detect various parameters, such as engine temperature and air pressure. It also includes controllers that receive input from the sensors and use it to determine how much power the engine should produce. The controller then sends signals to the engine to adjust its power output accordingly.

The engine control system is essential for maintaining the safe operation of the aircraft. It ensures that the engine produces only the amount of power that is needed, and it also monitors the engine’s temperature and other parameters to ensure that it is functioning properly. If a problem is detected, the controller will take action to correct it. This helps to prevent any dangerous situations from developing.

Assignment Activity 2: Examine the function and operation of aircraft engine lubrication and air systems that support safe aircraft power plant operation.

The function of the aircraft lubrication system is to provide lubrication to the engine and its components. The system includes a reservoir of lubricant, filters to remove impurities, and delivery systems to distribute the lubricant to the engine.

Lubricants are essential for the proper operation of an engine. They help to keep the moving parts of the engine lubricated and functioning properly. They also help to protect the engine from wear and tear.

The function of the aircraft air system is to provide air to the engine. The system includes a compressor to compress the air, a turbine to extract energy from the compressed air, and a fan to blow the air into the engine.

The air system is essential for the proper operation of the engine. It provides the air that the engine needs to function properly. The compressor extracts the air from the atmosphere and compresses it, while the turbine extracts energy from the compressed air to power the fan. This allows the engine to receive a continuous flow of air, even at high altitudes.

The air system also helps to keep the engine cool. The compressed air is used to cool the engine, which helps to prevent it from overheating.

Assignment Activity 3: Examine the function and operation of aircraft fire and ice protection systems that support safe aircraft power plant operation.

Aircraft fire protection systems and components are critical for the safety of passengers and crew. In the event of a fire, these systems must put out the blaze quickly and efficiently in order to prevent any damage to the aircraft or loss of life.

There are a variety of different fire protection systems and components available, each with its own advantages and disadvantages. Some common types of protection include fixed water extinguishers, hand-held extinguishers, agentless systems, gaseous fire suppression systems, and inert gas generators.

The function of the aircraft fire protection system is to detect and suppress fires in the engine and its components. The system includes sensors to detect fires, extinguishers to put out the fires, and systems to deliver the extinguishers to the engine.

Fire is a serious danger for aircraft. A fire in the engine can destroy it completely, and it can also cause a dangerous explosion. The fire protection system is essential for preventing these dangers from happening.

There are several different types of aircraft ice protection systems, each with its own advantages and disadvantages. The most common types are inflatable deicing boots, electrothermal ice protection, and pneumatic ice protection. Each type of system has its own benefits and drawbacks, so it’s important to choose the right one for your needs. 

• Inflatable deicing boots are the most common type of aircraft ice protection system. They work by inflating air bladders on the leading edge of the wing, which breaks off any ice that has formed. The main advantage of this system is that it is relatively simple and inexpensive to maintain. However, inflatable deicing boots can be damaged by rough handling or severe weather conditions.
• Electrothermal ice protection is a newer type of ice protection system. It works by heating the surfaces of the aircraft with an electric current. This prevents ice from forming on the aircraft and keeps it safe in even the harshest conditions. The main advantage of this system is its effectiveness in extreme weather conditions. However, electrothermal ice protection is expensive to maintain and can be difficult to repair.
• Pneumatic ice protection is another newer type of ice protection system. It works by blowing pressurized air onto the aircraft surfaces. This breaks up any ice that has formed and prevents it from becoming a danger. The main advantage of this system is its simplicity and low cost. However, pneumatic ice protection can be ineffective in severe weather conditions.

The purpose of the aircraft fire and ice protection systems is to keep the aircraft safe in all types of weather conditions. These systems are essential for ensuring the safety of passengers and crew. Each system has its own advantages and disadvantages, so it’s important to choose the right one for your needs.

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