Compressor Bearing Bearing Turbine 254 mm 254 mm 254 mm Figure 5.34 Turbine shaft. 5.2 A...

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Compressor Bearing Bearing Turbine 254 mm 254 mm 254 mm Figure 5.34 Turbine shaft. 5.2 A 22.63 kg compressor impeller wheel is driven by a 13.56 kg turbine mounted on a common shaft (see Figure 5.34) manufactured from steel with Young's modulus E = 207 GN/m. The design speed is 10000 rpm. Determine the shaft diameter so that the first critical speed is 12000 rpm giving a safety margin of 2000 rpm. Use Rayleigh's equation and assume rigid bear- ings and a massless shaft. Compressor Bearing Bearing Turbine 254 mm 254 mm 254 mm Figure 5.34 Turbine shaft. 5.2 A 22.63 kg compressor impeller wheel is driven by a 13.56 kg turbine mounted on a common shaft (see Figure 5.34) manufactured from steel with Young's modulus E = 207 GN/m. The design speed is 10000 rpm. Determine the shaft diameter so that the first critical speed is 12000 rpm giving a safety margin of 2000 rpm. Use Rayleigh's equation and assume rigid bear- ings and a massless shaft.