A Methodology for evaluating Commercial Off The Shelf parachutes designed for sUAS failsafe systems

Vincent Klyverts Tofterup*, Kjeld Jensen

*Kontaktforfatter for dette arbejde

Publikation: Bidrag til bog/antologi/rapport/konference-proceedingKonferencebidrag i proceedingsForskningpeer review

Resumé

Many Small Unmanned Aerial Systems (sUAS) are incapable of meeting the safety requirements to provide a sufficient low risk of a fatality while operating above populous areas or gatherings. A recognized mitigation of this risk is a failsafe system that in the event that the sUAS is unable to maintain stable flight, terminates the flight and activates an emergency parachute. This paper proposes a methodology for assessment of Commercial Off the Shelf parachutes for sUAS failsafe systems. The methodology encompasses the evaluation criteria for the selection of parachutes based on a user-defined Maximum Takeoff Weight and the failure scenario tests for assessment of reliability and efficiency. The current standard specification on parachutes for sUAS published by the American Society of Testing and Materials has inspired the failure scenario tests. These failure scenario tests consist of a bench/destructive test and a full power cut test. The multirotor used for test of the proposed methodology is a ~2 kg hexarotor. The results suggests the use of one specific parachute.
Furthermore, the deployment time and impact energy have been estimated to be 1.2s and 21J, respectively. This impact energy suggests a probability of fatality of less than 0.01.
This work is the first step towards selecting and evaluating parachute systems for sUAS. The proposed next steps are the refinement of the assessment of parachutes and increase of parachutes included in the failure scenario tests. Additionally, this will lead to the development of parachute recovery systems for sUAS with manual and autonomous triggering.
OriginalsprogEngelsk
Titel2019 International Conference on Unmanned Aircraft Systems (ICUAS)
ForlagIEEE
Publikationsdato15. aug. 2019
Sider129-137
ISBN (Trykt)978-1-7281-0334-1
ISBN (Elektronisk)978-1-7281-0333-4, 978-1-7281-0332-7
DOI
StatusUdgivet - 15. aug. 2019
Begivenhed2019 International Conference on Unmanned Aircraft Systems - Atlanta Marriott Buckhead Hotel & Conference Center, Atlanta, USA
Varighed: 11. jun. 201914. jun. 2019
Konferencens nummer: 229
http://www.uasconferences.com/

Konference

Konference2019 International Conference on Unmanned Aircraft Systems
Nummer229
LokationAtlanta Marriott Buckhead Hotel & Conference Center
LandUSA
ByAtlanta
Periode11/06/201914/06/2019
Internetadresse

Fingeraftryk

Parachutes
Antennas
Takeoff
Specifications
Recovery

Citer dette

Tofterup, Vincent Klyverts ; Jensen, Kjeld. / A Methodology for evaluating Commercial Off The Shelf parachutes designed for sUAS failsafe systems. 2019 International Conference on Unmanned Aircraft Systems (ICUAS). IEEE, 2019. s. 129-137
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abstract = "Many Small Unmanned Aerial Systems (sUAS) are incapable of meeting the safety requirements to provide a sufficient low risk of a fatality while operating above populous areas or gatherings. A recognized mitigation of this risk is a failsafe system that in the event that the sUAS is unable to maintain stable flight, terminates the flight and activates an emergency parachute. This paper proposes a methodology for assessment of Commercial Off the Shelf parachutes for sUAS failsafe systems. The methodology encompasses the evaluation criteria for the selection of parachutes based on a user-defined Maximum Takeoff Weight and the failure scenario tests for assessment of reliability and efficiency. The current standard specification on parachutes for sUAS published by the American Society of Testing and Materials has inspired the failure scenario tests. These failure scenario tests consist of a bench/destructive test and a full power cut test. The multirotor used for test of the proposed methodology is a ~2 kg hexarotor. The results suggests the use of one specific parachute.Furthermore, the deployment time and impact energy have been estimated to be 1.2s and 21J, respectively. This impact energy suggests a probability of fatality of less than 0.01. This work is the first step towards selecting and evaluating parachute systems for sUAS. The proposed next steps are the refinement of the assessment of parachutes and increase of parachutes included in the failure scenario tests. Additionally, this will lead to the development of parachute recovery systems for sUAS with manual and autonomous triggering.",
keywords = "emergency procedure, recovery system, flight termination system, free-fall testing",
author = "Tofterup, {Vincent Klyverts} and Kjeld Jensen",
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Tofterup, VK & Jensen, K 2019, A Methodology for evaluating Commercial Off The Shelf parachutes designed for sUAS failsafe systems. i 2019 International Conference on Unmanned Aircraft Systems (ICUAS). IEEE, s. 129-137, 2019 International Conference on Unmanned Aircraft Systems, Atlanta, USA, 11/06/2019. https://doi.org/10.1109/ICUAS.2019.8798368

A Methodology for evaluating Commercial Off The Shelf parachutes designed for sUAS failsafe systems. / Tofterup, Vincent Klyverts; Jensen, Kjeld.

2019 International Conference on Unmanned Aircraft Systems (ICUAS). IEEE, 2019. s. 129-137.

Publikation: Bidrag til bog/antologi/rapport/konference-proceedingKonferencebidrag i proceedingsForskningpeer review

TY - GEN

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AU - Jensen, Kjeld

PY - 2019/8/15

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N2 - Many Small Unmanned Aerial Systems (sUAS) are incapable of meeting the safety requirements to provide a sufficient low risk of a fatality while operating above populous areas or gatherings. A recognized mitigation of this risk is a failsafe system that in the event that the sUAS is unable to maintain stable flight, terminates the flight and activates an emergency parachute. This paper proposes a methodology for assessment of Commercial Off the Shelf parachutes for sUAS failsafe systems. The methodology encompasses the evaluation criteria for the selection of parachutes based on a user-defined Maximum Takeoff Weight and the failure scenario tests for assessment of reliability and efficiency. The current standard specification on parachutes for sUAS published by the American Society of Testing and Materials has inspired the failure scenario tests. These failure scenario tests consist of a bench/destructive test and a full power cut test. The multirotor used for test of the proposed methodology is a ~2 kg hexarotor. The results suggests the use of one specific parachute.Furthermore, the deployment time and impact energy have been estimated to be 1.2s and 21J, respectively. This impact energy suggests a probability of fatality of less than 0.01. This work is the first step towards selecting and evaluating parachute systems for sUAS. The proposed next steps are the refinement of the assessment of parachutes and increase of parachutes included in the failure scenario tests. Additionally, this will lead to the development of parachute recovery systems for sUAS with manual and autonomous triggering.

AB - Many Small Unmanned Aerial Systems (sUAS) are incapable of meeting the safety requirements to provide a sufficient low risk of a fatality while operating above populous areas or gatherings. A recognized mitigation of this risk is a failsafe system that in the event that the sUAS is unable to maintain stable flight, terminates the flight and activates an emergency parachute. This paper proposes a methodology for assessment of Commercial Off the Shelf parachutes for sUAS failsafe systems. The methodology encompasses the evaluation criteria for the selection of parachutes based on a user-defined Maximum Takeoff Weight and the failure scenario tests for assessment of reliability and efficiency. The current standard specification on parachutes for sUAS published by the American Society of Testing and Materials has inspired the failure scenario tests. These failure scenario tests consist of a bench/destructive test and a full power cut test. The multirotor used for test of the proposed methodology is a ~2 kg hexarotor. The results suggests the use of one specific parachute.Furthermore, the deployment time and impact energy have been estimated to be 1.2s and 21J, respectively. This impact energy suggests a probability of fatality of less than 0.01. This work is the first step towards selecting and evaluating parachute systems for sUAS. The proposed next steps are the refinement of the assessment of parachutes and increase of parachutes included in the failure scenario tests. Additionally, this will lead to the development of parachute recovery systems for sUAS with manual and autonomous triggering.

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