A comparative analysis and optimization of two supersonic hybrid SOFC and turbine-less jet engine propulsion system for UAV

Bahari, Mehran; Rostami, Majid; Entezari, Ashkan; Ghahremani, Sheida; Etminan, Melika

doi:10.1016/j.fuel.2022.123796

Cited by 6 publications

(3 citation statements)

References 40 publications

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“…The authors [39] show that in a lumped model, the difference in the concentration between the admission and exhaust is just over 3%. The result is analyzed for 𝑃 𝑂 2 = 0,21𝑃 𝑡𝑜𝑡𝑎𝑙 and a variable partial of oxygen, that is, 𝑃 𝑂 2 ≤ 0,21𝑃 𝑡𝑜𝑡𝑎𝑙 .…”

Section: 𝑎 𝑏 𝑎𝑛𝑑 𝑐 Are Theoretical or Adjusted Coefficients [-];mentioning

confidence: 99%

Determination of Maximum Power to Be Produced by a Solid Oxide Fuel Cell

Andrade,

Huebner,

Matencio

et al. 2023

Preprint

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Solid oxide fuel cells can generate electrical energy more efficiently and reduce pollutant emissions. They can be applied in many practical engineering cases, such as stationary generation, aircraft, and hybrid fast charging stations. This work uses heuristic and deterministic optimization algorithms coupled with thermodynamics lumped models to determine the main operation variables to achieve maximum power. We found, as expected, that higher pressures improve the power output of one cell. For one cell operating near atmospheric pressure, the output power was 78.56 W; for an operating condition near 5 atm, the output power was 99.21 W. Moreover, the heuristic and deterministic algorithms obtained similar results. The proposed model can be improved with chemical kinetics and the inclusion of cell dimensions to become more precise but offers a base method to estimate the main operating variables of an SOFC.

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Section: 𝑎 𝑏 𝑎𝑛𝑑 𝑐 Are Theoretical or Adjusted Coefficients [-];mentioning

confidence: 99%

Determination of Maximum Power to Be Produced by a Solid Oxide Fuel Cell

Andrade,

Huebner,

Matencio

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…UAVs fall into two main categories: fixed wing (airplane) and rotorcraft (single rotor—helicopter, or at least two rotors—multicopters). Recently (2020–2022), a third category of UAVs has seen rapid development: fixed-wing UAVs with vertical takeoff and landing (VTOL) capabilities [ 1 , 2 , 3 ], which combine the capabilities of an aircraft with those of a multirotor UAV, with either electric or combined propulsion [ 4 , 5 , 6 ] (electric with internal combustion engine) to extend flight range and develop superior flight performance, with the aim of being able to carry large payloads over long distances.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Hexacopter UAVs Attitude Parameters Employing Control and Decision Support Systems

Stamate

Pupăză

Nicolescu

et al. 2023

Sensors

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Today, there is a conspicuous upward trend for the development of unmanned aerial vehicles (UAVs), especially in the field of multirotor drones. Their advantages over fixed-wing aircrafts are that they can hover, which allows their usage in a wide range of remote surveillance applications: industrial, strategic, governmental, public and homeland security. Moreover, because the component market for this type of vehicles is in continuous growth, new concepts have emerged to improve the stability and reliability of the multicopters, but efficient solutions with reduced costs are still expected. This work is focused on hexacopter UAV tests carried out on an original platform both within laboratory and on unrestricted open areas during the start–stop manoeuvres of the motors to verify the operational parameters, hover flight, the drone stability and reliability, as well as the aerodynamics and robustness at different wind speeds. The flight parameters extracted from the sensor systems’ comprising accelerometers, gyroscopes, magnetometers, barometers, GPS antenna and EO/IR cameras were analysed, and adjustments were performed accordingly, when needed. An FEM simulation approach allowed an additional decision support platform that expanded the experiments in the virtual environment. Finally, practical conclusions were drawn to enhance the hexacopter UAV stability, reliability and manoeuvrability.

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“…For this reason, numerous researchers and developers have proposed combining SOFCs with systems in a hybrid configuration [116,117]. In such a system, the SOFC would have a near-constant power output, supplying energy for cruise.…”

mentioning

confidence: 99%

Experimental Activities on a Hydrogen-Powered Solid Oxide Fuel Cell System and Guidelines for Its Implementation in Aviation and Maritime Sectors

et al. 2023

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Solid oxide fuel cell (SOFC) systems are spreading worldwide and, for limited applications, also in the transport sector where high power rates are required. In this context, this paper investigates the performance of a six-cell SOFC stack by means of experimental tests at different power levels. The experimental campaign is based on two different stages: the heating phase, useful for leading the system temperature to approximately 750 °C, and the test stage, in which the experimental activities are properly carried out with varying input parameters, such as the DC current load. In addition, a detailed post-processing activity is conducted to investigate the main performance that could be used in the scale-up processes to design and size a SOFC-based system for transportation. The experimental results concern the electrical power, which reaches 165 W, roughly 27 W for each cell and with 52% electrical efficiency, as well as the theoretical thermal power and efficiency, useful for cogeneration processes, with maximum values of 80 W and 25%, respectively, achieved at maximum load. This discussion then shifts to an in-depth analysis of the possible applications of SOFCs in sustainable mobility, particularly in the maritime and aviation industries. The complexities of the issues presented underscore the field’s multidisciplinary nature, ranging from materials science to system integration, and environmental science to regulatory standards. The findings presented could be useful to scientists, engineers, policymakers, and industry stakeholders working on the development and commercialization of SOFC systems in the sustainable transportation sectors.

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A comparative analysis and optimization of two supersonic hybrid SOFC and turbine-less jet engine propulsion system for UAV

Cited by 6 publications

References 40 publications

Determination of Maximum Power to Be Produced by a Solid Oxide Fuel Cell

Determination of Maximum Power to Be Produced by a Solid Oxide Fuel Cell

Improvement of Hexacopter UAVs Attitude Parameters Employing Control and Decision Support Systems

Experimental Activities on a Hydrogen-Powered Solid Oxide Fuel Cell System and Guidelines for Its Implementation in Aviation and Maritime Sectors

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