Turbine performance: understanding notation

  • #1
Hi Guys. This is for my post graduation project. I came across a turbine performance map where the turbine specs are mentioned as GT12, 72 Trim, 0.39 A/R. Now what exactly these terms means. Please help.
 

Answers and Replies

  • #5
http://turbobygarrett.com/turbobygarrett/wheel_trim

This should explain what trim is, I only briefly read over it but it should help.
Thank You. I have data for a two wheel bootstarp air cycle machine used in aircraft environmental control system for air-conditioning under working conditions. The data is for different flight conditions, different temperature and pressure. I want generate corrected mass flow rate vs pressure ratio curve of the turbine used in the system. I dont have the standard data noted at STP (standard pressure and temperature) conditions, and no manufacture provided performance curve, but can I generate a curve using the available values which is not taken under STP conditions.
 

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