What are booster stages in aviation Gas Turbine

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Discussion Overview

The discussion centers around the concept of booster stages in gas turbines, particularly in the context of turbofan engines. Participants explore the definition, function, and implications of booster stages within axial compressors.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant expresses confusion about the term "booster stages" in relation to gas turbines, noting that they have only encountered the term in the context of rockets.
  • Another participant describes booster stages as low pressure compressor stages that gradually increase air pressure before it reaches high pressure compressor stages, suggesting that they may also relate to bypass systems.
  • A follow-up question is posed regarding the necessity of a gearbox between the booster stage and the fan if both are driven by a low pressure turbine, highlighting concerns about the rotational speed differences between the two components.

Areas of Agreement / Disagreement

Participants appear to have differing interpretations of the term "booster stages," with no consensus reached on its application in turbofan engines. The discussion remains unresolved regarding the necessity of a gearbox in the described configuration.

Contextual Notes

There are unresolved assumptions regarding the definitions of booster stages and their specific roles in gas turbine design, as well as the implications of rotational speed differences between components.

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

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