Method for Rapid Graphical Evaluation of Cooled or Uncooled Turbojet and Turboprop Engine or Component Performance (effects of Variable Specific Heat Included) (1955)
NASA Technical Reports Server (NTRS) · leaf 43
Figure 7. - Turbine work and temperature ratio. (A large working copy of this chart may be obtained by using the request card bound In the back of the report.)
NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.