Improvement of endurance performance for high-altitude solar-powered airships: A review

Xu, Yuanming; Zhu, Weiyu; Jun, Li; Zhang, Lanchuan

doi:10.1016/j.actaastro.2019.11.021

Cited by 32 publications

(9 citation statements)

References 68 publications

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“…Solar Energy associated with the country's dense population, which prioritizes residential, agricultural, and industrial sectors, means that land availability for solar programs will probably be limited 14 . Therefore, rooftop photovoltaic systems may help offset the need for more acreage for solar power.…”

Section: Renewable Energy and Its Potentialmentioning

confidence: 99%

Sustainable Transportation: Economics Driving Towards Environmental Solutions

Verma,

Maheshwari,

Srivastava

et al. 2024

eatp

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Energy demand rises along with global population growth and urbanization. Fossil fuels provide a large portion of the world's energy supply, and these sources are quickly being depleted at the current usage rate. Sustainability and social acceptability are fulfilled through an alternative source of energy. Renewable energy sources have been motivated by expanding global energy demand and growing environmental concerns. Renewable energy technologies may help reduce greenhouse gas emissions, improve energy security, and promote rising economies. A review of previous evaluations determines the existing costs of renewable energy relative to other sources of energy and rates the squabble based on past and present prices of renewable energy, providing the cost measurement analysis of available several renewable energy sources.

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Section: Renewable Energy and Its Potentialmentioning

confidence: 99%

Sustainable Transportation: Economics Driving Towards Environmental Solutions

Verma,

Maheshwari,

Srivastava

et al. 2024

eatp

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“…This can offset the cellular footprints from the antenna beams resulting in the change of the coverage of individual cells, multiple forced handovers, and poor performance [27]. However, these can be mitigated by controlling the platform thrusting [28] or actively compensating for the HAP displacement with the antenna to keep the beams fixed on the ground irrespective of the platform motion [24], [29].…”

Section: Delivering a Tier-based Architecturementioning

confidence: 99%

Extending Coverage and Capacity from High Altitude Platforms With A Two-tier Cellular Architecture

Arum

Grace

Mitchell

2023

IEEE Trans. on Mobile Comput.

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Conventional coverage and capacity from a high altitude platform (HAP) over an extended coverage area suffer significantly from inter-cell interference (ICI), antenna beam broadening, and uneven cell loading, which results in poor edge performance. In this paper, we show how a single antenna array on a HAP can be used to mitigate against these and achieve ubiquitous coverage by forming two tiers of a homogeneous contiguous cellular structure. We propose separate algorithms that implement the two-tier architecture with many antenna beams, which are used to form cells, and associate users with an appropriate cell and tier. A user associates with the cell and tier, which offer the best carrier power-to-noise ratio (CNR) and carrier power-to-interference-plus-noise ratio (CINR) respectively. The performance of the architecture, which is evaluated using simulation, is compared with a typical one-tier architecture. The results show that the two-tier architecture achieves over 30% higher user throughput and enhances throughput fairness and edge-of-cell connectivity by centralising as many users as possible within cells compared to the typical one-tier architecture. These benefits are better exploited by ensuring spectrum orthogonality between the two tiers.

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“…Research progress, regarding the utilization of the photovoltaic (PV) array on the stratospheric airship, has been spectacular during the past one or two decades [4,5]. Garg et al [6] proposed a method to estimate the incident solar energy on the airship hull profiles.…”

Section: Introductionmentioning

confidence: 99%

Multidisciplinary Optimization of Thermal Insulation Layer for Stratospheric Airship with a Solar Array

Yang

et al. 2022

Aerospace

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Stratospheric airships with a solar array have demonstrated overwhelming superiority in many aspects, such as earth observation, meteorological survey, and communication relay. The solar array supplies sufficient power for the airship to be in flight for months, but excessive heat is also transferred to the airship, causing high overpressure of inner gas. However, the optimal arrangement of the insulation layer on the airship has not been investigated. The theoretical method, including the geometry, thermal, and energy models, is developed and validated. The distribution of the temperatures and power of the solar cells, with different installation angles on the curved surface, is investigated. The thickness of insulation layer has a significant effect on the solar output power and internal pressure of the airship. An optimized configuration of the insulation structure is proposed, in order to improve the total output energy of solar array. The optimized configuration of insulations helps to reduce the structural mass by 24.9% and increase the payload mass by 9%. Moreover, the optimized arrangement improves the output energy of solar array in a year, and the maximum improvement is 8.2% on the winter solstice. The work displays the optimization of the thermal insulation layer for the stratospheric airship with a solar array, in order to improve the everyday energy acquirement during flight in a year.

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Improvement of endurance performance for high-altitude solar-powered airships: A review

Cited by 32 publications

References 68 publications

Sustainable Transportation: Economics Driving Towards Environmental Solutions

Sustainable Transportation: Economics Driving Towards Environmental Solutions

Extending Coverage and Capacity from High Altitude Platforms With A Two-tier Cellular Architecture

Multidisciplinary Optimization of Thermal Insulation Layer for Stratospheric Airship with a Solar Array

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