Monday, March 2, 2015

Operational Risk Management of the SCAN EAGLE UAS                   

            According to Google, ORM or Operational Risk Management is defined as “continued cyclic process that incorporates risk assessment, risk decision making, and also the implementation of risk controls.  This results in mitigation, acceptance and/or risk avoidance” (Google, n.d.).  The military defines ORM as “the process of dealing with risk associated with military operations.  This includes risk assessment, risk decision making, and implementation of effective risk controls” (Fort Sill Marine Corps Artillery Detachment, 2008). 
            Terms that are often related to Operational Risk Management (Fort Sill Marine Corps Artillery Detachment, 2008):
·         Risk – The loss of something relative to severity and probability
·         Severity – What is the worst plausible consequence when dealing with a hazard?
·         Hazard – Situation in which the likelihood of bodily injury, death, mission degradation or damage could occur.
·         Probability – How likely will the hazard result in loss or accident?
·         Control – The way one would reduce or decrease the likelihood of occurrence, and/or severity.
·         Risk Assessment – the process of assessing the risks associated with a known or unknown hazard.

         The research assignment’s focus is to delve into the Operational Risk Management of the Scan Eagle System.  The ScanEagle is an autonomous unmanned aerial vehicle designed to be agile, undetectable, and persistent (Boeing's ScanEagle, 2006).  This system is a low cost aerial system capable of providing multiple facets of surveillance, and environmental monitoring by way of myriad of sensor suites.  Scan Eagle is capable of providing ISR for locating high-value targets, acting as a forward observer, weather monitoring, chemical and biological weapons detection through air analysis, border patrols of real-time images, or it can be used for wireless communications relay and targeting of ships at sea (McGarry, 2003).  Other missions range from aiding weather forecasting, providing imagery for geomagnetic and atmospheric surveys, resource mapping, search and rescue operations or Battle Damage Assessment (Becket, 2007).

Scan Eagle’s Specifications are shown in the table below:

Table 1.0 General Characteristics of Scan Eagle UAV


Preliminary Hazard List/Analysis
  Figure 2. An example of a Preliminary Hazards Assessment worksheet for the sUAS, ScanEagle.

            The card above will be used to evaluate potential hazards that have the ability to make the flight and operation of ScanEagle an unsafe operation.  The PHL/A is designed for ease of tracking by establishing a track number per hazard entry. This information can be used to create a history of hazardous items encountered and stored in a database for safety trending and analysis.  The associated hazards are listed on the check list above such as environments such as - Maritime/Jungle/Desert/Mountains/Tundra.  The PHL/A also provides the chance to capture the hazard’s probability and severity of the hazard per MIL-STD-882D/E.  Assessing the risk level is very important and can be captured as a numerical value as perscribed by the System Safety Specification - MIL-STD-882D/E.
            The Analysis portion of the Preliminary Hazard List/Analysis card is used to assess the initial risks, and identify mitigation actions available for the identified hazards.  The residual risk level  - RRL provides an assessmen of  the identified event, item, danger after the mitigation is in place.  This action will give greater visibility of the hazard  which would aid in training. Knowing the likelihood of the hazard will occur regardless of mitigating actions is very important allowing the operators to adjust actions and reactions accordingly during ScanEagle operations.
Operation Hazard List/Analysis

  Figure 3. An example of a Preliminary Hazards Assessment worksheet for the sUAS, ScanEagle.

            The OHL/A is used during ScanEagle’s flight (Barnhart, Hottman, Marshall, & Shappee, 2011).  This data offers further ability for safety of operations research and record keep for ScanEagle.  System improvements and inovative thinking come from historical data gather by operator and crew associated with the ScanEagle UAS.  The OHL/A can drive UAS design improvements for new variants.  
ScanEagle Risk Assessment 
ScanEagle  Risk Assessment
Date: 
Aircraft: ScanEagle
Serial #: 
UAS Crew/Station:
_______________/____________           _______________/____________
_______________/____________           _______________/____________
Mission Type
SUPPORT
TRAINING
PAYLOAD CHECK
EXPERIMENTAL
1
2
3
4
Hardware Changes
NO
YES
1
4
Software Changes/Calibration
NO
YES
1
4
Airspace of Operation
WIDE OPEN
MINIMAL HAZ
MODERATE HAZ
ABUNDANT HAZ
1
2
3
4
Operator Experience with this Aircraft
EXPERT
ADVANCED
INTERMEDIATE
NOVICE
1
2
3
4
Flight Time
DAY
NIGHT
1
4
Type of Flight
LOS
LOS/BLOS
BLOS
FPV
1
2
3
4
Visibility
> 10 MILES
6-9 MILES
2-5 MILES
< 2 MILES
1
2
3
4
Surface Winds
0-5 KTS
5-15 KTS
> 15 KTS
2
3
4
Forecast Winds
0-5 KTS
5-15 KTS
> 15 KTS
2
3
4
Weather Deteriorating
NO
YES
1
4
Other Airspace Activity
NO
YES
1
4
Established Lost Link Procedures
YES
NO
1
NO FLIGHT
GPS Satellites Acquired
ALL 3
2
1
NONE
1
2
3
4
Proper "home" Location Set
YES
NO
1
4
Potential For Tx/Rx Interference
NONE
SOME
MODERATE
SEVERE
1
2
NO FLIGHT
NO FLIGHT
Total
RISK LEVEL
18-27
28-36
37-45
45-56
LOW
MEDIUM
SERIOUS
HIGH
Aircraft Number: __________________       Aircraft Type:  _______________________
Flight Released By:  _____________________________  Date: ____________  Time: ____________
 Figure 4. ScanEagle Operational Risk Management worksheet.  This worksheet is borrowed/adapted from: Barnhart, R., Hottman, S., Marshall, D., & Shappee, E. (2011).Introduction to Unmanned Aircraft Systems. London: CRC Press. page 128.

 Table 2 Risk assessment matrix

The above Risk Assessment is also a part of the overall Operational Risk Management necessary to maintain the safe operation of the ScanEagle UAS.  The form above rates the level of risk to ScanEagle operations by attaching numerical representation.  Those numerical identifications relay the level of safety, the low the number the greater the safety of flight operations.  The Matrix above also represents how DoD agencies color code risk to convey their level of importance.

References

Barnhart, R., Hottman, S., Marshall, D., & Shappee, E. (2011). Introduction to Unmanned                       Aircraft Systems. London: CRC Press.
Boeing's ScanEagle. (2006). Wings of Gold, 31, 13-15. Retrieved from             http://search.proquest.com.ezproxy.libproxy.db.erau.edu/docview/199487728?accountid= 27203
McGarry, T. (2003). Spy in the Sky, Stanford Alumni. Retrieved February 25, 2015, from             https://alumni.stanford.edu/get/page/magazine/article/?article_id=37560


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