Abstract

This paper examines the possibility of using photoelectric energy conversion during creation of electric unmanned aerial vehicles of a hybrid type. These vehicles should operate at altitudes up to 22,000 m and have an unregulated flight time. The problems arising during creation of such devices are their instability and poor controllability. Also they possess a number of disadvantages typical for airships: large size and, as a consequence, high windage and dependence on weather conditions; low maneuverability and, as a consequence, the difficulty of landing. These negative aspects of all circular wings resulted in complete rejection of their development. However, the considered disadvantages show the feasibility of creating hybrid aircraft. Particular attention in this paper is given to disk-shaped vehicles. They have less windage, do not need to turn around when changing the direction of flight. The presence of solar panels in combination with modern control and navigation systems make it possible to create new unmanned aerial vehicles with unlimited flight time. The aircraft dimensions are calculated as a function of the lifted mass and other parameters. Recommendations on possible operation parameters of hybrid airship are given.

Highlights

  • Lighter-than-air aircrafts have been always caught attention [1–3]

  • New power sources, more advanced solar panels, modern control and navigation systems are being created [4–9]. This contributes to the creation of new type of aircraft, in particular unmanned aerial vehicles with unlimited flight time [10–14]

  • The use of an electric propulsion system together with a solar battery allows the development of unmanned aerial vehicles that do not require landing

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Summary

Introduction

Lighter-than-air aircrafts have been always caught attention [1–3]. New power sources, more advanced solar panels, modern control and navigation systems are being created [4–9]. This contributes to the creation of new type of aircraft, in particular unmanned aerial vehicles with unlimited flight time [10–14]. The characteristic feature of airships is that they do not have a strictly defined limit on the mass of the transported cargo [15–18] in contrast to heavierthan-air aircrafts. The most significant advantages of airships are: higher reliability and safety in contrast to airplanes and helicopters; no strict limitations on carrying capacity; unlimited flight time; no need for runways. It is necessary to itemize their disadvantages:

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