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Energies 2013, 6(2), 839-870; doi:10.3390/en6020839

Numerical Model of a Variable-Combined-Cycle Engine for Dual Subsonic and Supersonic Cruise

Von Karman Institute for Fluid Dynamics, Chaussée de Waterloo 72, Rhode-St-Genèse, Belgium
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Received: 8 December 2012 / Revised: 23 January 2013 / Accepted: 1 February 2013 / Published: 7 February 2013
(This article belongs to the Special Issue Combined Heat and Power – Strategy and Practice)

Abstract

Efficient high speed propulsion requires exploiting the cooling capability of the cryogenic fuel in the propulsion cycle. This paper presents the numerical model of a combined cycle engine while in air turbo-rocket configuration. Specific models of the various heat exchanger modules and the turbomachinery elements were developed to represent the physical behavior at off-design operation. The dynamic nature of the model allows the introduction of the engine control logic that limits the operation of certain subcomponents and extends the overall engine operational envelope. The specific impulse and uninstalled thrust are detailed while flying a determined trajectory between Mach 2.5 and 5 for varying throttling levels throughout the operational envelope. View Full-Text
Keywords: air-breathing engine; high speed propulsion; combined cycle; dynamic model air-breathing engine; high speed propulsion; combined cycle; dynamic model
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Fernandez-Villace, V.; Paniagua, G. Numerical Model of a Variable-Combined-Cycle Engine for Dual Subsonic and Supersonic Cruise. Energies 2013, 6, 839-870.

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