Next Article in Journal / Special Issue
Ornithopter Type Flapping Wings for Autonomous Micro Air Vehicles
Previous Article in Journal
Numerical Study of Shock Wave Attenuation in Two-Dimensional Ducts Using Solid Obstacles: How to Utilize Shock Focusing Techniques to Attenuate Shock Waves
Previous Article in Special Issue
Unmanned Aerial Systems (UAS) Research Opportunities
Article Menu

Export Article

Open AccessArticle
Aerospace 2015, 2(2), 222-234;

Trajectory Management of the Unmanned Aircraft System (UAS) in Emergency Situation

Department of Aircraft and Aircraft Engines, Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, 12, Powstancow Warszawy Str., 35-959 Rzeszow, Poland
Academic Editor: David Anderson
Received: 1 February 2015 / Revised: 13 March 2015 / Accepted: 18 March 2015 / Published: 4 May 2015
(This article belongs to the Special Issue Unmanned Aerial Systems 2015)
Full-Text   |   PDF [1378 KB, uploaded 4 May 2015]   |  


Unmanned aircraft must be characterized by a level of safety, similar to that of manned aircraft, when performing flights over densely populated areas. Dangerous situations or emergencies are frequently connected with the necessity to change the profiles and parameters of a flight as well as the flight plans. The aim of this work is to present the methods used to determine an Unmanned Aircraft System’s (UAS) flight profile after a dangerous situation or emergency occurs. The analysis was limited to the possibility of an engine system emergency and further flight continuing along a trajectory of which the shape depends on the type of the emergency. The suggested method also enables the determination of an optimal flying trajectory, based on the territory of a special protection zone (for example, large populated areas), in the case of an emergency that would disable continuation of the performed task. The method used in this work allows researchers, in a simplified way, to solve a variation task using the Ritz–Galerkin method, consisting of an approximate solution of the boundary value problem to determine the optimal flight path. The worked out method can become an element of the on-board system supporting UAS flight control. View Full-Text
Keywords: autonomous systems; unmanned systems operational analysis; flight path planning autonomous systems; unmanned systems operational analysis; flight path planning

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Majka, A. Trajectory Management of the Unmanned Aircraft System (UAS) in Emergency Situation. Aerospace 2015, 2, 222-234.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Aerospace EISSN 2226-4310 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top