Next Article in Journal
Phaseless Terahertz Coded-Aperture Imaging Based on Incoherent Detection
Previous Article in Journal
Al2O3-Based a-IGZO Schottky Diodes for Temperature Sensing
Previous Article in Special Issue
Non-Destructive Trace Detection of Explosives Using Pushbroom Scanning Hyperspectral Imaging System
Article Menu
Issue 2 (January-2) cover image

Export Article

Open AccessArticle
Sensors 2019, 19(2), 227; https://doi.org/10.3390/s19020227

Preflight Contingency Planning Approach for Fixed Wing UAVs with Engine Failure in the Presence of Winds

Signal Processing Inc., Rockville, MD 20850, USA
*
Author to whom correspondence should be addressed.
Received: 4 November 2018 / Revised: 19 December 2018 / Accepted: 4 January 2019 / Published: 9 January 2019
Full-Text   |   PDF [7104 KB, uploaded 9 January 2019]   |  

Abstract

Preflight contingency planning that utilizes wind forecast in path planning can be highly beneficial to unmanned aerial vehicles (UAV) operators in preventing a possible mishap of the UAV. This especially becomes more important if the UAV has an engine failure resulting in the loss of all its thrust. Wind becomes a significant factor in determining reachability of the emergency landing site in a contingency like this. The preflight contingency plans can guide the UAV operators about how to glide the aircraft to the designated emergency landing site to make a safe landing. The need for a preflight or in-flight contingency plan is even more obvious in the case of a communication loss between the UAV operator and UAV since the UAV will then need to make the forced landing autonomously without the operator. In this paper, we introduce a preflight contingency planning approach that automates the forced landing path generation process for UAVs with engine failure. The contingency path generation aims true reachability to the emergency landing site by including the final approach part of the path in forecast wind conditions. In the contingency path generation, no-fly zones that could be in the area are accounted for and the contingency flight paths do not pass through them. If no plans can be found that fulfill reachability in the presence of no-fly zones, only then, as a last resort, the no-fly zone avoidance rule is relaxed. The contingency path generation utilizes hourly forecast wind data from National Oceanic and Atmospheric Administration for the geographical area of interest and time of the flight. Different from past works, we use trochoidal paths instead of Dubins curves and incorporate wind as a parameter in the contingency path design. View Full-Text
Keywords: contingency planning; automated landing; forced landing; path generation; wind forecast; UAV contingency planning; automated landing; forced landing; path generation; wind forecast; UAV
Figures

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).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Ayhan, B.; Kwan, C.; Budavari, B.; Larkin, J.; Gribben, D. Preflight Contingency Planning Approach for Fixed Wing UAVs with Engine Failure in the Presence of Winds. Sensors 2019, 19, 227.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top