Thermoreactor and the thermocompressor

Thermoreactor jet engine

 

In 2011, Michel Aguilar's Thermoreactor project received $1.62 million over three years in a subsidy from the Government of France through the Defense procurement agency DGA and the DGCIS of the Ministry of the Industry, under their RAPID award scheme supporting innovative technological projects of small and medium enterprises.

 

A consortium gathering Turbomeca, COMAT Aerospace and the Institut Pprime (CNRS/Poitiers) has been formed to evaluate the Thermoreactor first generation jet engine and develop the technology.

 

The Thermoreactor is a small jet engine, ramjet-pulsejet hybrid. It uses a combustion at constant volume (isochoric) under the Humphrey cycle, whose thermal efficiency is greater (about 20%) than combustion at constant pressure (isobaric) of the Brayton cycle classically used in turbomachinery.

ACG Aviation DARPA USA
ACG Aviation DARPA USA

 

The combustion chamber is fed through a control valve and an inlet pipe by compressed air from a Thermocompressor aside in back tip, which extracts ambient air and moderately compresses it into a storage tank. See after…

 

The thermoreactor has a rectangular cross section and very compact dimensions (10"×4,7"×4"). Thermoreactors are small enough to be fitted within wing's body as an array next to each other. Each Thermoreactor develops a thrust of 500 newtons. The Xplorair PX200 includes 9 thermoreactors (3x3): 2x3 in each front fuselage, and 3 in rear fuselage. During take-off and landing, the 9 thermoreactors work together, providing 4,500 newtons of thrust. The safety “acoustic” altitude 600 meters (2000 feet) is reached in less 2 minutes for 12 kg of fuel burnt.

 

Experimentation of Thermoreactor 2d generation at P Prim in mars 2014

ACG Aviation thermocompresseur
ACG Aviation thermocompresseur

ACG-Aviation-Xplorair-Thermoreacteur-2eme-Generation-11

 

 

 

 

 

 

 

Look at valves geometry :

As we will see after, at cruise, all Thermoreactors are « Off », and only the Chilowsky propulsion is « On ». The simultaneous activation of all thermoreactors during flight is still possible and would bring the speed to 400 mph, but only during 2 minutes because consomption !

 

Thermoreactor 3th Generation (TR3G)

This generation therefore includes thermal ignition, the mono valve tree pulses, the acoustic reduction, and power rotation as shown in the diagram:

ACG-Aviation-Xplorair-Thermoreacteur-3eme-Generation
ACG-Aviation-Xplorair-Thermoreacteur-3eme-Generation

 

4th generation Thermoreactor (TR4G)

But since this is a never ending story ... this is the 4th generation Thermoreactor (TR4G) that contains all the properties of TR3G more post combustion and thermal compression.

We present its thermodynamic cycle (TR4G) :

ACG-Aviation-Xplorair-Thermocompresseur-Cycle-Allumage-Compression-Thermique
ACG-Aviation-Xplorair-Thermocompresseur-Cycle-Allumage-Compression-Thermique

We will not make more comments, but we can tell you that there is a complete version called 5th generation, the TR5G...

 

And the Thermocompressor ?

This new architecture based on a Kaplan turbine and a centrifugal compressor driven by 2 Thermoreactors exhibit performance and optimized consumption

ACG Aviation thermocompresseur
ACG Aviation thermocompresseur