Renewable power system simulation and endurance analysis for stratospheric airships

Yang, X. H.; Liu, Duoneng

doi:10.1016/j.renene.2017.06.077

Cited by 61 publications

(14 citation statements)

References 8 publications

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“…where m he is the mass of helium, M he is the molar mass of helium, R is the ideal gas constant, T he is the temperature of helium, and V he is the volume of helium. The installation of the solar cells on top of the airship is described by the central angle γ and x ij coordinate [24]. The other two coordinates of the center point of the cell unit in the body reference system can be derived by:…”

Section: Spatial Geometry Modelmentioning

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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Section: Spatial Geometry Modelmentioning

confidence: 99%

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

Yang

et al. 2022

Aerospace

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“…For highaltitude long endurance missions, a special category of stratospheric airships has emerged (HALESAs). These systems are to be deployed for months at a stretch at altitudes ranging from 15 to 20km above the Earth's surface, where the temperature is approximately constant, wind intensity is quite low and stable (1,2,3,4) and the wind moves horizontally at this band of altitudes (5) . To achieve long endurance flight at a high altitude, these systems generally use solar energy to meet their own propulsive power requirements, as well as the power needs of the onboard mounted payloads.…”

Section: Introductionmentioning

confidence: 99%

A comparative study of conventional and tri-lobed stratospheric airships

Manikandan

Pant

2021

Aeronaut. j.

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The design and development of Stratospheric Airships for High-Altitude Long-Endurance missions (HALESAs) has generated interest worldwide. Conventional airships usually have a single-lobed axisymmetrical envelope shape. In contrast, several non-axisymmetric envelope configurations have been proposed for the HALESAs, such as flattened single lobed and multi lobed. This paper describes a methodology for carrying out a comparative analysis of a conventional HALESA and the multi-lobed HALESA designed for the same design mission. A sizing methodology which enables the estimation of its design parameters to meet some user-specified requirements has been developed for airships with envelopes of both these shapes. A Multidisciplinary Design Optimisation (MDO) approach has been followed in this methodology, which includes considerations from the disciplines of aerodynamics, energy, environment and structures. The study indicates that the envelope volume, solar array area and total mass of the single-lobed conventional airship are better than those of the tri-lobed HALESA. While the multi-lobed HALESA has the advantage of a flatter upper surface resulting in higher efficiency of the solar panels, the conventional airship has lower drag, which results in superior mission performance.

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“…The stratospheric airship is referred as a Lighter-Than-Air aircraft which can float at least a diurnal cycle at about 20 -30 km high altitude [1] [2] [3]. It has been a long dream for human to do our endeavor to make Stratospheric airship fly in the sky from the 70 th last century.…”

Section: Introductionmentioning

confidence: 99%

The Mechanical Characteristics and Experimental Study of the Stratospheric Airship

Xu¹,

Liu²,

Pan³

2021

JAMP

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Stratospheric airship is a special near-space air vehicle which has lots of advantages than other traditional flying aircrafts, such as long endurance, strong survival ability, low cost, excellent resolution detector etc. In addition, the stratospheric airship can be an ideal stratospheric bearing platform. This paper firstly gave an overview describing some technical differences between the stratospheric airship and the traditional airship, including the working environment, design specifications, structure characteristics, energy system, flying modes, and so on. Some technical difficulties including the materials, power system which apply to the stratospheric airship and deformation of the huge hull, super-heating effect, and station-keeping were discussed. Furthermore, technical target, technical specifications, design concept, and overview of flying tested about two stratospheric demonstration airships which were representative achievements of the research on the stratospheric airship in China were introduced. Finally, the predictions about the progress and direction of development were discussed.

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Renewable power system simulation and endurance analysis for stratospheric airships

Cited by 61 publications

References 8 publications

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

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

A comparative study of conventional and tri-lobed stratospheric airships

The Mechanical Characteristics and Experimental Study of the Stratospheric Airship

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