CBL - Campus del Baix Llobregat

Projecte llegit

Títol: eVTOL aircraft concept - Electric engines and batteries study and design

Estudiants que han llegit aquest projecte:

Director/a: MELLIBOVSKY ELSTEIN, FERNANDO PABLO

Departament: FIS

Títol: eVTOL aircraft concept - Electric engines and batteries study and design

Data inici oferta: 19-09-2022     Data finalització oferta: 19-04-2023


Estudis d'assignació del projecte:
    GR ENG SIST AEROESP
Tipus: Individual
 
Lloc de realització: EETAC
 
Paraules clau:
Batteries, ducted fan, nanowires, energy density, lithium-ion, anode, eVTOL,
 
Descripció del contingut i pla d'activitats:
The aim of this project is to continue the build upon an ongoing project to design and build the thrust structure of the eVtol. This thrust structure will provide the optimum thrust/lift balance during the aircraft cruise phase, and enough lift and controls in the T/O and LAND flight phases.

We will study the use of ducted fan during the project development, to reach the best and Optimus relation thrust/lift/drag/mass and balance of the aircraft.

The aircraft has 3 engines, all of them ducted fan, 2 ducted fan tiltrotor, in the rear part, beside the Vtail, for the thrust in the cruise phase, and 1 embedded propeller, fixed rotor, inside nose of the aircraft.

In addition, the nose will need a system to hide/show the embedded rotor in the cruise and T/O and Land phases, respectively.

The work plan will be as follows:

0) Comparative study with the prior student
1) Study the optimal balance of electrical motors in the aircraft.
2) Study of the electrical motors advantages.
3) Study and design of the hide/show system in the nose.
4) Study of engine power management, and the system in case of an engine failure.
5) Study the improvement of the aerodynamic efficiency in the Ductedfan.
 
Overview (resum en anglès):
The purpose of this project is to perform a study on the current and near-future feasibility of a battery system for commercial and regional aviation. Analysing the energy requirements of the ONA eVTOL and the different technologies available and in development.
The structure of this project is as follows:
The first chapter briefly introduces the ONA eVTOL project, the aircraft's desired performances and the flight's different phases.
In the second chapter, a study on the energy requirements for the aircraft is performed based on the characteristics of each flight phase, the physical characteristics of the proposed aircraft and the performance of the Ducted Fans (DFs).
In the third chapter, we obtain the final energy and power requirements for the ONA eVTOL propulsion system from the results obtained in the previous chapter.
The fourth chapter discusses the current feasibility of the battery system. It analyses the weight distribution and performance of state-of-the-art lithium-ion (Li-Ion) batteries and argues about their viability for electric aviation.
The fifth chapter reviews the two most promising technologies under development and how they could affect the viability of the ONA eVTOL and electric aviation in the near future.
In the sixth chapter, two alternative designs are proposed and analysed based on the argued viability and potential performance of the previous technologies.
The seventh chapter lists some of the aspects not addressed in the project that could have a substantial impact on the feasibility of the propulsion system.
Finally, the project concludes by summarising the main insights obtained from the study and providing a general vision for the future feasibility of the project.

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