CBL - Campus del Baix Llobregat

Projecte llegit

Títol: Pre- and inter-cooling for high-speed turbojet applications

Estudiants que han llegit aquest projecte:

Director/a: MELLIBOVSKY ELSTEIN, FERNANDO PABLO

Departament: FIS

Títol: Pre- and inter-cooling for high-speed turbojet applications

Data inici oferta: 17-07-2023     Data finalització oferta: 17-03-2024


Estudis d'assignació del projecte:
    GR ENG SIST AEROESP
Tipus: Individual
 
Lloc de realització: EETAC
 
Paraules clau:
Turbojet, engine cycles, heat exchanger, pre-cooling, inter-cooling, simulator, Matlab
 
Descripció del contingut i pla d'activitats:
 
Overview (resum en anglès):
Since the aerospace world began to rise, it has been under constant development, reaching milestones that nobody believed as possible in the beginnings. During all this time, new ideas appeared as a solution to the new challenges that came abroad with the evolution of the sector as it showed itself as one of the sectors with more potential.

Sometimes, these new ideas rendered obsolete those of the moment or left their applications limited to very particular ones. A pretty good example is the reality of the turbojet engines nowadays. Since the turbofan engines appeared, the aforementioned use began to decrease, but they never became obsolete. At the moment turbojet engines are still used for certain applications, specially in military ones.

But, what would happen if these engines could be updated and upgraded with the new technologies? Would they be used for more applications? The answer is affirmative, as it can be seen in cases as the one associated to Reaction Engines Ltd. This British company is in charge of developing the
adaptable turbojet to rocket engine that will drive the Skylon space-plane from the ESA (European Space Agency). This aircraft has the objective to achieve the first space flight with a horizontal take-off.

With the idea of improving the actual turbojet engines, this project intends to perform an analysis on the effects and results of implementing heat exchangers in different points of the motor.

Concretely, it analyzes the effect of applying inter-cooling or pre-cooling. The turbojet engine flying conditions are in the hypersonic regime to follow the same conditions as in the SABRE-ESA project. The conditions selected are in order to analyze the effects of the aforementioned heat exchangers in such extreme situations.

To perform this study, a simulator which intends to reproduce with high fidelity the processes happening inside the turbojet has been developed. This simulator shows result either in a graphic or numerical way and enables to modify the cycle with pre-cooling or inter-cooling.

The analysis for which the simulator has been developed, is based on the ideal and the real cycle of both configurations in order to made a comparison between them and obtain conclusions. Finally, it also shows the losses effects due to the real heat exchanger selected. It has to be noted that the study is performed on each modification separately.

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