GAS TURBINE INTRODUCTION (POWERPLANT REVIEW) 29/08/23
POWERPLANT - GAS TURBINE INTRODUCTION 29/08/23 WHAT IS GAS TURBINE? Rotary engine that extracts energy from a flow of combustion gases. Primary advantages > power to weight ratio. Turbine is suit of aircraft propulsion. Turbine is a true example of Newton 3rd law. Turbine propel airmass backward in order to move forward. Formula to calculate the basic force generated on the gas turbine. F = M.a > Force = mass x acceleration --> Thrust force = M x (Vo-Vi) + Pressure Thrust Vo> of the air vi> Inlet Velocity Propeller drives a large amount of air backward slowly, where gas turbine throws a small amount/ mass of air quicker. TYPE OF GAS TURBINE - Turbofan/ turbojet. (Low/ High bypass) - Turbo shaft. - Turbo prop. - Straight Jet. HOW TURBINE WORKS? Four stroke cycle > otto cycle (Intake, Compress, Power, Exhaust). Gas turbine > Brayton cycle (Combustion occurs at constant pressure). 1. Air enters ATM Pressure enter engine. 2. Air is compressed. 3. Fuel is added in ...