AAWSAP DIRD, Positron Aerospace Propulsion, March 2010

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Figure 4. Details of the PTRE Engine (courtesy Positronics Research LLC)¹²

A comparison with the combustion turbo-ramjet engine (Figure 5) shows that volume used for combustion heating is used by PTREs for convection heating.

Figure 5. Combustion Turbo-Ramjet (courtesy Positronics Research LLC)¹³

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