Highly loaded turbine blading

A turbine having at least one essentially axial-flow stage, which stage consists of a guide-blade row (LE) and a moving-blade row (LA), which are accommodated in a common casing (30) , which casing has at least one inflow section (31) and at least one outflow section (32), and furthermore the degree of reaction of a stage being greater than 0.15, wherein, for a turbine part which lies between an inflow section (31) and an outflow section (32) of the casing (30), for the essentially axial-flow blade rows (LE, LA), the ratio of their axial chord length (sax) to their height (h) is selected in such a way that a characteristic factor RBL is greater than 1, RBL being defined by RBL = 1.1 · π · 10 - 15 · P 2 · p _ 4 z 8 · m . 6 · N 8 · ∑ i = 1 2 · z ⁢ h i 8 D M , i 2 · s ax , i 6

• in which calculation specification
• p [W]=output of the turbine
• {overscore (p)} [Pa]=arithmetic mean between inlet pressure and outlet pressure of the turbine
• z [-]=number of stages
• {dot over (m)} [kg/s]=mass flow of the working medium which flows through the turbine
• N [1/s]=rotational speed
• hi [m]=blade height of a blade of the blade row i, measured on the outflow side of the blade
• Dm,i [m]=mean value of hub outside diameter and casing inside diameter, measured on the outflow side of a blade of the blade row i
• Sax,i [m]=axial chord length of a blade of the blade row i, measured at the point of maximum axial chord length.