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Preventing Dynamic Rollover in Brownout

Gatter, Alexander (2019) Preventing Dynamic Rollover in Brownout. In: 45th European Rotorcraft Forum 2019, ERF 2019. 45th Conference on European Rotorcraft Forum, 2019-09-17 - 2019-09-20, Warschau, Polen.

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Kurzfassung

The Institute of Flight Systems at the DLR (German Aerospace Center) site in Braunschweig, Germany is trying to find ways to improve the safety of helicopter operations. One very dangerous type of operation that is the landing of a helicopter. Loss of situational awareness can lead to unwanted contact with objects or a dynamic rollover when touching the ground. This paper presents research with optical navigation methods that has been conducted towards minimizing the danger of a dynamic rollover in bad visual conditions. Optical navigation is a method that is often used for navigating small unmanned aircraft. However, the so far conducted research in that field usually focuses on undegraded visual environment. Most of the optical navigation methods are designed to work with images that can fully be evaluated. In this paper, a set of existing optical navigation methods is tested towards the ability to work in degraded visual environment. Further, a self-developed method is presented that has been designed to be abe to work in scenarios where most parts of an image cannot be evaluated. The methods are tested on recorded flight test data. These flight test data are modified with a set of masks that simulate a visibility impairment. The conducted tests show that existing optical navigation methods do struggle when the complete image area cannot be evaluated. The evaluation of the self-developed method shows that it is not affected by impaired sight. However, its performance in situations with non-restricted sight shows to be behind the performance of some of the existing methods.

elib-URL des Eintrags:https://elib.dlr.de/129271/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Preventing Dynamic Rollover in Brownout
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Gatter, Alexanderalexander.gatter (at) dlr.dehttps://orcid.org/0000-0002-6228-7890NICHT SPEZIFIZIERT
Datum:September 2019
Erschienen in:45th European Rotorcraft Forum 2019, ERF 2019
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Dynamic Rollover, Brownout, DVE, Optical Navigation, Image Processing
Veranstaltungstitel:45th Conference on European Rotorcraft Forum
Veranstaltungsort:Warschau, Polen
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:17 September 2019
Veranstaltungsende:20 September 2019
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Luftverkehrsmanagement und Flugbetrieb
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AO - Air Traffic Management and Operation
DLR - Teilgebiet (Projekt, Vorhaben):L - Faktor Mensch und Sicherheit in der Luftfahrt (alt)
Standort: Braunschweig
Institute & Einrichtungen:Institut für Flugsystemtechnik > Hubschrauber
Hinterlegt von: Gatter, Alexander
Hinterlegt am:10 Jan 2020 17:55
Letzte Änderung:24 Apr 2024 20:32

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