CBL - Campus del Baix Llobregat

Projecte llegit

Títol: eVTOL aircraft concept - Power systems

Estudiants que han llegit aquest projecte:

Director/a: MELLIBOVSKY ELSTEIN, FERNANDO PABLO

Departament: FIS

Títol: eVTOL aircraft concept - Power systems

Data inici oferta: 05-09-2022     Data finalització oferta: 05-04-2023


Estudis d'assignació del projecte:
    GR ENG SIST AEROESP
Tipus: Individual
 
Lloc de realització: EETAC
 
Paraules clau:
eVTOL, ducted fan, shrouded propeller, engines, propulsion system, rotors, tiltrotors, propeller, thrust, power
 
Descripció del contingut i pla d'activitats:
The aim of this project is to design and assess the power systems,
including thrust, of an eVTOL aircraft. The power plant will
provide vertical take-off and landing, hover capabilities and
efficient fixed wing cruise flight, as well as properly integrate
into the flight control system.

The main focus will be placed on the feasibility of twin-rotor
ducted fan propulsion with tilt capability for optimising the
different flight phases. A three ducted fan solution will be
explored, one in front for take off and landing and two at the
back that can be tilted to alterantate between take-off/landing
phases and climb/cruise/descent phases.

The work plan will be as follows:


0) Acquaintance with work done in a previous TFG on the subject.
1) Study of 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 for the ducted fan
propeller in the nose.
4) Study of engine power management, in nominal and engine failure
conditions.
 
Overview (resum en anglès):
In recent years, the relentless advance of climate change forces society to adapt to more sustainable modes of transportation. In a not so distant future, urban transport is envisioned to expand to the skies with new innovative electric Vertical Take-Off and Landing (eVTOL) aircraft. Although this idea seems very futuristic, the concept of an electric aircraft might not be as far away as previously thought.
ONAerospace aims to take part in this future by designing its own eVTOL aircraft. This project focuses on the ongoing propulsion system design. On its first iteration the project introduced ducted fan propulsion, electric motors and bateries. This second iteration delves into ducted fan performance in order to give a more accurate design of the aircraft¿s propulsive units, and better predict its performance capabilities.
Two propulsion configurations have been studied separately: a takeoff and hovering configuration, which uses two ducted fans before the wings and one coaxial ducted fan embedded inside the aircraft¿s tail; and a cruise configuration which uses just the two front engines.
The propulsive units are designed to be adaptive ducted fan. This means that, each ducted fan can morph and adapt to optimize its performance to any given condition.
Ducted fan performance has been predicted using two theoretical analyses: momentum theory, and blade element theory. These methods have been used to size the propulsive units in order to ensure that the thrust requirements are met. Also, the power required in each configuration and flight phase has been computed.
Finally, experimental data on the effects of varying different design parameters was reviewed with the objective to give a more detailed design of each ducted fan.

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