Comparison of electro-pump liquid propellant engines from the viewpoint of cost and reliability with the previous Engine generations

Document Type : Original Article

Authors
hamid reza ali mohamadi 1
Hassan Naseh 2
Fatolah Omi 3
1 پژوهشگر و نویسنده
2 Assistant Professor, Aerospace Research Institute, Ministry Science, Research and Technology (MSRT)
3 Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran
10.22034/jssta.2025.460476.1166
Abstract
Achieving new technologies for designing Liquid Propellant Engines (LPEs) with high reliability, along with cost reduction, is one of the most important challenges of designers. Hence, the subject of optimization and utilization of new technologies in order to realize the above approaches has always been considered. Therefore, it is necessary to provide a solution to reduce the challenges faced by the previous two generations of LPE, i.e. pressurizing and turbopump engines. So, a new generation of LPE, called electro pump liquid propellant engines, has been noticed in the space industries of the world. In this paper, an attempt has been made to compare the electro pump LPE with the previous two generations, i.e. pressurizing and turbopump from the point of view of cost and reliability. To this end, reliability and cost modeling has been performed for LPEs specifically for electro-pump LPE. Based on these results, it can be seen that the cost of the electro-pump engine is 70% of the turbopump engine. That is important; the reliability of this kind of engines is 3% higher than the turbopump engines
Keywords
New approaches
liquid propellant engines
Cost
Reliability
Electro- pump engine
Subjects
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Space Science, Technology and Applications
Volume 5, Issue 2
March 2026
Pages 1-13

  • Receive Date 31 May 2024
  • Revise Date 22 February 2025
  • Accept Date 28 June 2026