## 5 Conclusions
**Nomenclature**  
\(\psi\): twist angular position of profile, deg  
\(\overline{\psi}\): twist angular position of blade, deg  
\(\eta\): twist angle of blade, deg  
\(\psi_{1}\): twist angular position of test profile I, deg \(\psi_{\Pi}\) & twist angular position of test profile II, deg \(\alpha\) & registration angle of engine axis, deg \(P_{si}(x_{si},y_{si},z_{si})\) & A priori coordinates, mm \(P_{mi}(x_{mi},y_{mi},z_{mi})\) & precise coordinates, mm \(x_{1},y_{1}\) & center coordinates of leading edge, mm \(x_{2},y_{2}\) & center coordinates of trailing edge, mm \(R_{q}\) & radius of leading edge, mm \(R_{h}\) & radius of trailing edge, mm \(\beta\) & angle between the center line O\({}_{1}\)O\({}_{2}\) of the leading and trailing edges and \(X\) axis, deg \(\theta\) & angle between the profile chord and the center line \(\theta\) & O\({}_{1}\)O\({}_{2}\), deg \(\mathrm{X}\) & abscissas of measuring points on test profile, mm \(\mathrm{Y}\) & ordinates of measuring points on test profile, mm \(\mu\) & average value of measurements, mm \(\sigma\) & standard deviation of measurements, mm \(\psi_{\Pi}\) & twist angular position of test profile II, deg \(\alpha\) & registration angle of engine axis, deg \(P_{si}(x_{si},y_{si},z_{si})\) & A priori coordinates, mm \(P_{mi}(x_{mi},y_{mi},z_{mi})\) & precise coordinates, mm \(\mathrm{x}_{1},y_{1}\) & center coordinates of leading edge, mm \(\mathrm{x}_{2},y_{2}\) & center coordinates of trailing edge, mm \(R_{q}\) & radius of leading edge, mm \(R_{h}\) & radius of trailing edge, mm \(\beta\) & angle between the center line O\({}_{1}\)O\({}_{2}  
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