Qualitative Failure Analysis for a Small Quadrotor Unmanned Aircraft System

Olson, Isaac J.; Atkins, Ella M.

doi:10.2514/6.2013-4761

Cited by 19 publications

(6 citation statements)

References 10 publications

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“…One method for demonstrating initial and continued airworthiness compliance, part of which includes the failure rate analysis, is through safety assessment using techniques including functional hazard analysis, system safety assessment, fault tree analysis, etc. [16]- [18] For a novel and experimental aircraft type with no existing airworthiness requirements, such as multirotor UASs, one of the common methods used to evaluate reliability is the use of fault-tree analysis [19]- [21]. This would involve the creation of a fault tree for the UAS by identifying possible failure or sequence of failures that would lead to a crash event: for example, single motor failure in multirotor UAS is generally non-recoverable without fault diagnosis algorithms [22] or specialized flight control software [23], while failure in a radio receiver would not result in a crash without the flight controller also failing.…”

Section: Uas Failure Rate and Reliabilitymentioning

confidence: 99%

Initial Reliability Assessment of a Commercial-Off-The-Shelf GPS Sensor for Generic UAVs

Thanaraj

Tan

Wang

et al. 2022

2022 Integrated Communication, Navigation and Surveillance Conference (ICNS)

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Section: Uas Failure Rate and Reliabilitymentioning

confidence: 99%

Initial Reliability Assessment of a Commercial-Off-The-Shelf GPS Sensor for Generic UAVs

Thanaraj

Tan

Wang

et al. 2022

2022 Integrated Communication, Navigation and Surveillance Conference (ICNS)

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“…It should be noted, however, that this initial set is still being refined and is subject to change in the final recommended set of hazards-based test scenarios being developed. Further work is needed in defining failure modes and their effects for sUAS 25,26,27 , especially multirotor configurations, and in the development of a full set of hazards-based test scenarios at the vehicle level. Test scenarios designed to assess operational safety under off-nominal and hazardous conditions and the effectiveness of contingency management systems designed to ensure operational safety are also needed.…”

Section: Future Workmentioning

confidence: 99%

Experimental Flight Testing for Assessing the Safety of Unmanned Aircraft System Safety-Critical Operations

Belcastro

Klyde

Logan

et al. 2017

17th AIAA Aviation Technology, Integration, and Operations Conference

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Many beneficial civilian applications of commercial and public small unmanned aircraft systems (sUAS) in low-altitude uncontrolled airspace have been proposed and are being developed. Associated with the proliferation of civil applications for sUAS is an expected requirement for BVLOS (beyond visual line of sight) operations with increasing use of autonomous systems and operations under increasing levels of urban development and airspace usage. It is also anticipated that future demand will necessitate a shift toward multi-UAS operations in which a single operator will be responsible for the safe operation of multiple sUAS simultaneously. As risk increases for ensuring the safety of manned aircraft and persons on the ground (e.g., in suburban and urban environments), these operations become safety-critical. Ensuring the safety and effectiveness of these safety-critical operations will require an assessment of the impacts of safety hazards on sUAS and their operation, as well as the development of hazard mitigation and contingency management systems and strategies that reduce the associated risk. Safety assessments must be performed under nominal and off-nominal conditions using analysis, simulation, and experimental testing that utilize a set of test scenarios designed to expose safety vulnerabilities. Moreover, the effectiveness of hazard mitigation systems and contingency management strategies must be similarly evaluated. Experimental test techniques and hazardsbased test scenarios that facilitate these safety assessments are therefore needed, as well as sUAS computer simulation models that are capable of characterizing off-nominal vehicle dynamics. Ultimately, real-time risk assessment and safety assurance systems may be needed for safetycritical operations such that determination of unacceptable risk will initiate hazard mitigation actions to reduce risk to an acceptable level and thereby ensure safety. This capability may especially be needed to enable (and ensure) safe multi-UAS operations under uncertain, offnominal, and hazardous conditions. This will require the development of methodologies for the effective detection and mitigation of emergent (unanticipated) safety hazards, as well as humanautomation interface systems that enable effective teaming under adverse conditions. Validation of these systems will require (in part) experimental testing in a realistic and relevant flight environment. This paper presents experimental flight test techniques and an initial set of hazardsbased test scenarios that are under development for assessing the safety of sUAS operations. Key research and technical requirements for establishing a flight test environment for assessing the safety of multi-UAS operations are also briefly addressed.

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“…In addition to Olson et al in 2013 analyzed the failure of the Michigan quadrotor, the remaining useful lifemulti-rotore was estimated through FTA. The reliability of multirotors with various configurations was investigated based on the controllability degree [11].…”

Section: Introductionmentioning

confidence: 99%

Reliability calculation with error tree analysis and breakdown effect analysis for a quadcopter power distribution system

Imani¹,

Gholami²,

Dehaghi³

2022

Maint. reliab, cond. monit.

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Quadcopters are playing an increasingly important role in a variety of industries due to their numerous advantages over other types of aircraft. Additionally, quadcopters are susceptible to damage, and their repair can be costly. On the other hand, today, reliability is recognized as a critical design feature in most industries. A device's reliability is one of the most important and complex issues in the field of engineering since it provides engineers with an insight into how a device performs. Due to the fact that reliability is a major factor in all industries and can significantly affect the quality and life of products, we analyzed the reliability of a quadcopter using statistical relationships, mathematical models, and previous experiences. After examining the failure modes and their effects on the system, the effects of the quadcopter failures are analyzed using the FMEA method, in order to determine the cause and mode of the failure. Finally, to determine the causes of failure, we have checked the quadcopter by the FTA method to minimize the possibility of failure. The purpose of this article is to discuss definitions and concepts in the field of reliability, followed by an analysis of the quadcopter and its components.

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Qualitative Failure Analysis for a Small Quadrotor Unmanned Aircraft System

Cited by 19 publications

References 10 publications

Initial Reliability Assessment of a Commercial-Off-The-Shelf GPS Sensor for Generic UAVs

Initial Reliability Assessment of a Commercial-Off-The-Shelf GPS Sensor for Generic UAVs

Experimental Flight Testing for Assessing the Safety of Unmanned Aircraft System Safety-Critical Operations

Reliability calculation with error tree analysis and breakdown effect analysis for a quadcopter power distribution system

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