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              <p>Recently, the Hybrid Aircraft: academic reSearch on Thermal and Electrical Components and Systems (HASTECs) project developed an advanced serial hybrid electric propulsion system, for regional transport aircraft, with a parametric model in each propulsion component. This approach integrated main physical phenomena covering several fields (electrical, mechanical, thermal) for sizing and evaluation of device losses and weights. The study highlighted the necessity for propulsive system optimization rather than component optimization, intending to achieve an optimal balance between efficiency and mass. However, the project decoupled the airframe from the propulsion system, resulting in the inability to ascertain if this compromise was reflected in the overall aircraft optimization. Concerning the Overall Aircraft Design (OAD) front, the FAST-OAD software has been used in several studies to analyze the propulsion-airframe integration but it relied on low-fidelity models for the hybrid propulsion system. This approach introduces significant uncertainties in the results, especially due to the lack of consideration for certain electrical phenomena, such as partial discharges, making it difficult to satisfy design constraints.The objectives of this study are twofold: first, to present a new OAD process by coupling HASTECs and FAST-OAD software; second, to structure the oad process with the integration of different topologies of aircraft (turboelectric, serial-hybrid, full electric), the number of motors, and a method to determine the maximum possible range in pure electric mode. Finally, the objective is to ensure the robustness and relevance of the final OAD results despite strong interactions with an acceptable computation cost facing the system complexity for further optimizations. The case study for the new design process is the design exploration of an electric regional transport aircraft with a range extender.</p>
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            <relation active="#struct-443875" type="direct"/>
          </listRelation>
        </org>
      </listOrg>
    </back>
  </text>
</TEI>