https://doi.org/10.1051/epjconf/202637001033
Thermodynamic Model to Evaluate the Efficiency and Economic Benefit of a Two Spool Engine
JNTU Emeritus, Bangalore, Ka
* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 29 May 2026
Abstract
A case study into the performance of two-spool turboprop engines, used the Pratt & Whitney PW120A to evaluate fuel efficiency, range, and economic savings. The results indicate that such two-spool models improve fuel efficiency by about 5% over a single-spool. The extended range by 65 km per flight saves ~$26,800 annually per aircraft. These figures confirm the relative efficacy of two-spool engine architectures.
© The Authors, published by EDP Sciences, 2026
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
