Nonlinear control of a reusable rocket engine for life extension

Carl F. Lorenzo, Asok Ray, Michael S. Holmes

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


The conceptual development and a design methodology are presented for life-extending control where the objective is to achieve high performance and structural durability of complex dynamic systems. A life-extending controller is designed for a reusable rocket engine via damage mitigation in both the fuel (H2) and oxidizer (O2) turbine blades while satisfying the dynamic performance requirements of the combustion chamber pressure and O2/H2mixture ratio. The design procedure makes use of a combination of linear and nonlinear techniques and also allows adaptation of the life-extending controller module to augment a conventional performance controller of the rocket engine. The nonlinear part of the controller is designed by optimizing selected parameters in a prescribed dynamic structure of damage compensation.

Original languageEnglish (US)
Pages (from-to)998-1004
Number of pages7
JournalJournal of Propulsion and Power
Issue number5
StatePublished - 2001

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Fuel Technology
  • Mechanical Engineering
  • Space and Planetary Science


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