2Prof. Bhaskar Roy, Prof. A M Pradeep, Department of Aerospace, IIT BombayLect - 30Axial Flow Turbine3-D blade design
3Prof. Bhaskar Roy, Prof. A M Pradeep, Department of Aerospace, IIT BombayLect - 30Design Steps : Design steps in brief are•Selection of parameters•Design at mean diameter, Dm•Radial variation of parameters•Profiling of stator and rotor blades
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4Prof. Bhaskar Roy, Prof. A M Pradeep, Department of Aerospace, IIT BombayLect - 301. Design at Dma)Parameters to be selected from the preliminary cycle(thermodynamic) calculations are: (@ flt velocity & altitude), Tg, ṁg, Pa, Ta at design pointand the engine parameters= 0.88 – 0.90 for one stage= 0.91 – 0.94 for each stage for multi-stageb) Parameters selected from compressor-turbine matching are:Exit Umean, Dmean, Dtip, or M2[λis a total temperature based critical speed ratio, λ =V/acr]and,All these should lead to a work distribution, and number of stages Z.***gTTP ,π ,P*Tη2d ,λ ,TiHH∑z1=g0i=γ RTacrr