Recent advances in fuel cells based propulsion systems for unmanned aerial vehicles

Pan, Zhefei; An, Le; Wen, Chih-Yung

doi:10.1016/j.apenergy.2019.02.079

Cited by 176 publications

(73 citation statements)

References 75 publications

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“…Polymer electrolyte membrane fuel cells (PEMFCs) are becoming a feasible candidate for applications in portable and automotive industries (especially in robotics and unmanned aerial vehicles [1]). Fuel cell performance is significantly determined by commonly used carbon-supported Pt-based nanostructured electrocatalysts [2,3].…”

Section: Introductionmentioning

confidence: 99%

On the Influence of Composition and Structure of Carbon-Supported Pt-SnO2 Hetero-Clusters onto Their Electrocatalytic Activity and Durability in PEMFC

et al. 2019

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A detailed study of the structure, morphology and electrochemical properties of Pt/C and Pt/x-SnO2/C catalysts synthesized using a polyol method has been provided. A series of catalysts supported on the SnO2-modified carbon was synthesized and studied by various methods including transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), electrochemical methods, and fuel cell testing. The SnO2 content varies from 5 to 40 wt %. The TEM images, XRD and XPS analysis suggested the Pt-SnO2 hetero-clusters formation. The SnO2 content of ca. 10% ensures an optimal catalytic layer structure and morphology providing uniform distribution of Pt-SnO2 clusters over the carbon support surface. Pt/10wt %-SnO2/C catalyst demonstrates increased activity and durability toward the oxygen reduction reaction (ORR) in course of accelerated stress testing due to the high stability of SnO2 and its interaction with Pt. The polymer electrolyte membrane fuel cell current–voltage performance of the Pt/10wt %-SnO2/C is comparable with those of Pt/C, however, higher durability is expected.

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Section: Introductionmentioning

confidence: 99%

On the Influence of Composition and Structure of Carbon-Supported Pt-SnO2 Hetero-Clusters onto Their Electrocatalytic Activity and Durability in PEMFC

et al. 2019

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“…The bottleneck of any UAV communications is the energy restrictions on UAVs [319]. Significant recent advances in battery technologies have emerged, such as hydrogen fuel cells [320] and enhanced lithium-ion batteries [321]. The paradigm of energy harvesting is considered as the most appropriate technology to provide cost-effective and perpetual energy supplies for UAVs [322].…”

Section: A Wireless Power Transfer (Wpt)mentioning

confidence: 99%

Softwarization of UAV Networks: A Survey of Applications and Future Trends

et al. 2020

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Unmanned Aerial Vehicles (UAVs) have become increasingly important in assisting 5G and beyond 5G (B5G) mobile networks. Indeed, UAVs have all the potentials to both satisfy the ever-increasing mobile data demands of such mobile networks and provide ubiquitous connectivity to different kinds of wireless devices. However, the UAV assistance paradigm faces a set of crucial issues and challenges. For example, the network management of current UAV-assisted systems is time consuming, complicated, and carried out manually, thus causing a multitude of interoperability issues. To efficiently address all these issues, Software-Defined Network (SDN) and Network Function Virtualization (NFV) are two promising technologies to efficiently manage and improve the UAV assistance for the next generation of mobile networks. In the literature, no clear guidelines are describing the different use cases of SDN and NFV in the context of UAV assistance to terrestrial networks, including mobile networks. Motivated by this fact, in this survey, we guide the reader through a comprehensive discussion of the main characteristics of SDN and NFV technologies. Moreover, we provide a thorough analysis of the different classifications, use cases, and challenges related to UAV-assisted systems. We then discuss SDN/NFV-enabled UAV-assisted systems, along with several case studies and issues, such as the involvement of UAVs in cellular communications, monitoring, and routing, to name a few. We furthermore present a set of open research challenges, high-level insights, and future research directions related to UAV-assisted systems.

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“…As highlighted earlier, the hard constraint here is the available payload weight allowance on the HAP. A typical specific energy of hydrogen storage tank varies between 1-2 kWh/kg [44][45][46] with the current state-of-the-art. The estimated payload energy consumption in 24 h is approximately 38 kWh.…”

Section: Km Radius Service Areamentioning

confidence: 99%

Energy Management of Solar-Powered Aircraft-Based High Altitude Platform for Wireless Communications

et al. 2020

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With the increasing interest in wireless communications from solar-powered aircraft-based high altitude platforms (HAPs), it is imperative to assess the feasibility of their deployment in different locations with the constraints on energy consumption and payload weight under consideration. This paper considers the energy management of solar-powered aircraft-based HAPs for wireless communications service provisioning in equatorial regions and regions further up the northern hemisphere. The total solar energy harvested and consumed on the shortest day of the year is analyzed, and it is explained how this determines the feasibility of long endurance, semi-permanent missions. This takes into account the different aircraft-based HAPs and the energy storage systems currently available, and how these can be deployed for wireless communications. We show that the solar-powered HAPs are energy and weight limited, and this depends largely on the platform’s wingspan available for the deployment of solar collectors. Our analysis show that services can be provided for a duration of 15–24 h/day using current platforms, with wingspans ranging between 25–35 m, depending on the configuration and coverage radius. Furthermore, we show that doubling an aircraft’s wingspan can increase its payload capacity by a factor of 6, which in turn enhances its feasibility for wireless communications.

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Recent advances in fuel cells based propulsion systems for unmanned aerial vehicles

Cited by 176 publications

References 75 publications

On the Influence of Composition and Structure of Carbon-Supported Pt-SnO2 Hetero-Clusters onto Their Electrocatalytic Activity and Durability in PEMFC

On the Influence of Composition and Structure of Carbon-Supported Pt-SnO2 Hetero-Clusters onto Their Electrocatalytic Activity and Durability in PEMFC

Softwarization of UAV Networks: A Survey of Applications and Future Trends

Energy Management of Solar-Powered Aircraft-Based High Altitude Platform for Wireless Communications

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