Gas turbine Definition and 60 Threads

  1. J

    Isentropic efficiency vs polytropic efficiency of a gas turbine

    definition wise i got the difference between these two efficiencies. but in practice how does these two differ? i was referring to this book: Jet propulsion: a simple guide to the aerodynamics and thermodynamic design ... By N. A. Cumpsty he has mentioned this: "using polytropic...
  2. M

    Gas turbine blades Dimentions and Design of aircraft engine

    Hi I am working on gas turbine design to investigate fatigue and creep failure and i want to design gas turbine blades for aircraft engine. I need to find out the dimention for CAd design if anyone help me that what should be the dimention of these blades and how many blades attached to...
  3. L

    How to Calculate Gas Turbine Inlet Temperature?

    Does anyone have a spreadsheet with formulas or a set of formulas that one can use to determine the turbine inlet temperature of a gas turbine knowing measured parameters like fuel flow, compressor discharge tempuratures, LHV of fuel.
  4. P

    Calculating Gas Turbine Shaft Power

    Homework Statement I have been asked to calculate a range of values relating to a Gas Turbine engine, and while I have been able to find the majority of the values I am almost certain that the Thermal Efficiency value of 1.64% I have come up with is incorrect. This relies on Shaft power...
  5. S

    Chromium use in Gas Turbine Engines help

    Hi all, I'm hoping that someone may be able to help! I'm doing a project which has involved me looking at the use of superalloys in Gas Turbine engines (i.e. Rolls Royce, GE etc). As part of that I am looking in particular at the use of Chromium within these engines, does anybody have any...
  6. T

    Question about gas turbine instrumentaion if u can

    hi everyone: i have a question about gas turbines : i am working as instrumentation engineer( beggar ) at a power station .. we use gas turbine GE ( mark V) frame 9 . i got that alarm : exhaust thermocouple # 10 fail , drop number 123 if anybody working in such a field can help me in...
  7. S

    Gas Turbine Plant: Combustion Process & Air-Fuel Ratios

    Again another homework question, all help greatly appreciated A gas turbine plant is fuelled by Methane,. After compresssion the air and fuel enter the combustion chamber at a temp of 600K and excess air is supplied in order to limit the temp of the combustion products to 1200K after steady...
  8. L

    How can a student create a gas turbine engine from scratch?

    Hello guys, I'm a second year BSc aerospace student in Holland, and I'm thinking about making a gas turbine engine. I hope to specialize in powerplants eventually. You people seem knowledgeable, so I thought I'd ask my question here. Anyway, bare with me a bit... I first thought about...
  9. P

    Aero engine without gas turbine

    Is there any aero engine in the world without any rotating bodies like compressor-turbine? Other than ram jet or scramjet. Thers is a vague idea in my mind to go for an aero engine without rotating elements in it. I just wanted to confirm if it is there.
  10. S

    Optimizing Fuel Injector Orientation for Increased Thrust in Gas Turbine Engines

    Why does the pressure in the burner of a gas turbine engine drop when you are increasing the internal energy of the air?
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