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Solar UAV design framework for a HALE flight

Purpose The purpose of this paper is to present the development of an optimal design framework for high altitude long endurance solar unmanned aerial vehicle. The proposed solar aircraft design framework provides a simple method to design solar aircraft for users of all levels of experience. Design/...

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Published in:Aircraft engineering 2019-08, Vol.91 (7), p.927-937
Main Authors: Hwang, Hoyon, Cha, Jaeyoung, Ahn, Jon
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Language:English
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container_title Aircraft engineering
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creator Hwang, Hoyon
Cha, Jaeyoung
Ahn, Jon
description Purpose The purpose of this paper is to present the development of an optimal design framework for high altitude long endurance solar unmanned aerial vehicle. The proposed solar aircraft design framework provides a simple method to design solar aircraft for users of all levels of experience. Design/methodology/approach This design framework consists of algorithms and user interfaces for the design of experiments, optimization and mission analysis that includes aerodynamics, performance, solar energy, weight and flight distances. Findings The proposed sizing method produces the optimal solar aircraft that yields the minimum weight and satisfies the constraints such as the power balance, the night time energy balance and the lift coefficient limit. Research limitations/implications The design conditions for the sizing process are given in terms of mission altitudes, flight dates, flight latitudes/longitudes and design factors for the aircraft configuration. Practical implications The framework environment is light and easily accessible as it is implemented using open programs without the use of any expensive commercial tools or in-house programs. In addition, this study presents a sizing method for solar aircraft as traditional sizing methods fail to reflect their unique features. Social implications Solar aircraft can be used in place of a satellite and introduce many advantages. The solar aircraft is much cheaper than the conventional satellite, which costs approximately $200-300m. It operates at a closer altitude to the ground and allows for a better visual inspection. It also provides greater flexibility of missions and covers a wider range of applications. Originality/value This study presents the implementation of a function that yields optimized flight performance under the given mission conditions, such as climb, cruise and descent for a solar aircraft.
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subjects Aerodynamic coefficients
Aeronautics
Aircraft
Aircraft configurations
Aircraft design
Algorithms
Altitude
Design factors
Design of experiments
Design optimization
Efficiency
Endurance
Flight characteristics
Fluid dynamics
Fuel cells
Fuel consumption
High altitude
Minimum weight
Photovoltaic cells
Sizing
Solar energy
Unmanned aerial vehicles
User interfaces
Variables
title Solar UAV design framework for a HALE flight
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