workshop case study
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Sir Lawrence Wackett Aerospace Research Centre School of Aerospace, Mechanical and Manufacturing Engineering RMIT University
RMIT UASRESEARCH TEAM
Risk Management and Risk Templates for Civil UAS Operations: Case Study
Dr Reece Clothier
© 2015 RMIT University
26-Feb-15
RMIT UASRESEARCH TEAM ELEMENTS OF A SIMPLE BBT
Dr Reece Clothier 2
CONSEQUENCES
No Loss
Multiple Fatalities
THREATS PREVENTATIVE BARRIERS
MITIGATIVE BARRIERS
Bar
rier
Bar
rier
Bar
rier
Bar
rier
Bar
rier
Bar
rier
HAZARD
Midair Collision
Control Control
THREAT: The initiating conditions necessary for the occurrence of the hazard
BARRIER: A collection of controls that reduce the probability of an event within a chain of events describing an accident scenario.
CONTROL: a process, policy, device, practice, or other action that can be manipulated to alter the probability of a barrier being breached.
CONSEQUENCE: The end loss state of the accident scenario
© 2015 RMIT University
RMIT UASRESEARCH TEAM CASE STUDY
• Context – Small fixed wing platform operator wishing to perform agricultural survey
missions in a rural area – Low altitude, visual line of sight operations – High level discussion on the development of a safety case for the
management of the mid-air collision risk
Dr Reece Clothier 3 © 2015 RMIT University
RMIT UASRESEARCH TEAM CASE STUDY
• What are our threats? – Categories of airspace user? – Equipage? – Services they have? – Susceptibility to damage? – Encounter probability?
• How does the threat encounter probability change for each user with: – Height AGL? – Time of day? – Weather? – Altitude? – Location?
Dr Reece Clothier 4 © 2015 RMIT University
RMIT UASRESEARCH TEAM CASE STUDY
• Strategic Mitigation – controls primarily undertaken prior to the conduct of the flight to ensure the safe and efficient flow of air traffic.
• What are some of the controls that could be considered?
Dr Reece Clothier 5 © 2015 RMIT University
RMIT UASRESEARCH TEAM CASE STUDY
• Airborne Separation Assurance – controls implemented by the airspace user to increase the probability of detecting conflicts, and of resolving the situation through changes in the heading, altitude or speed of one or both aircraft mitigation.
• What are some of the controls that could be considered?
Dr Reece Clothier 6 © 2015 RMIT University
RMIT UASRESEARCH TEAM CASE STUDY
• Collision Avoidance – aircraft based (flight crew or automated systems) measures undertaken to reduce the probability of an imminent collision transitioning to a near mid air collision.
– Controls include those that aid in the detection and avoidance of the other aircraft
– Controls that support or provide assurance in the “see and avoid" function performed by the pilots of other aircraft
• What are some of the controls that could be considered?
Dr Reece Clothier 7 © 2015 RMIT University
RMIT UASRESEARCH TEAM EXAMPLE ASSESSMENT
• VHF radio equipment is necessary for the provision of multiple controls (e.g., radio listening watch, radio broadcast)
– A common point of failure to multiple barriers
• Discussion in relation to the VHF radio: – Reliability – Independence – Availability – Integrity – Coverage – Assurance
Dr Reece Clothier 8 © 2015 RMIT University
Contact
DR Reece Clothier
M: 0421 873 608
W: www.ruasrt.com
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RMIT UASRESEARCH TEAM
Sir Lawrence Wackett Aerospace Research Centre
School of Aerospace, Mechanical and Manufacturing Engineering
RMIT University
Copyright © 2015 RMIT University