What are booster stages in aviation Gas Turbine

[Kshitizagar]

Guys, I was reading about Turbofan and somewhere while browsing Defence Turbofan engines I came across Booster stages, but I didn't find any description or what are booster stages in Gas Turbine (Axial Compressor)

 

[Pkruse]

I design gas turbines, & I've never heard that term for turbofans. Only has meaning to me with regard to rockets.

 

[Travis_King]

The booster is a low pressure compressor stage. Prior to ramping up the pressures with the HP compressor stages, (or in cases where the bypass is used to boost pressure for addition downstream) the air will be gradually brought up in pressure by LP stages, sometimes called booster stages.

 

[Kshitizagar]

Thank You Travis King... tell me one thing more if fan and booster stages are driven by one LP turbine then is it necessary that we have gearbox in between booster stage and fan. Because as far as I know there Speed (rotational) difference between LP compressor and fan

 

[alphy]

Booster stages in aviation gas turbines refer to additional compressor stages that are added to the main axial compressor to increase its efficiency and performance. These stages are typically found in high-performance engines, such as those used in military aircraft, where a higher pressure ratio is required.

The main purpose of booster stages is to increase the pressure and temperature of the air entering the combustion chamber, which leads to more efficient fuel combustion and ultimately, more thrust. This is achieved by compressing the air to a higher pressure before it enters the combustion chamber, allowing for a greater amount of fuel to be burned and producing more power.

Booster stages are typically located at the front of the engine, before the main compressor stages. They are often smaller in size compared to the main compressor stages and can be either axial or centrifugal in design. The use of booster stages allows for a smaller and more compact engine design, while still achieving high levels of performance.

In summary, booster stages play a crucial role in enhancing the overall efficiency and performance of gas turbines in aviation. They are an important component in achieving the high levels of thrust required for modern aircraft and are a key feature in the design of high-performance engines.