Technology: ODF Multi-Mission Aircraft making strides in early wildfire detection
Meet ODF's "eye in the sky." The multi-mission aircraft (MMA) allows for quick detection and response to dozens of wildfires every year. During fire season, the MMA flies at night, looking for signs of wildfires started by lightning. What makes this system unique and successful is the marrying of several technologies: night vision, infrared and an augmented reality mapping system.
Oregon Department of Forestry’s (ODF) Partenavia P-68 Observer has had many uses in the last 40 years but its most recent function is as the platform for the department’s night-time wildfire detection work. Using night vision and an FLIR camera system that is paired with an augmented reality mapping system, this multi-mission aircraft (MMA) allows for quick detection and response to dozens of wildfires every year.
During fire season, the Partenavia flies at night looking for signs of wildfires started by lightning. What makes this system unique and successful is the marrying of several technologies that couldn’t do the job on their own. ODF uses night-vision goggles (NVGs) and infrared sensors to initially spot suspected new fires. Then a laser pointer that is only visible in the NVGs, is used to communicate the exact position of the possible new fire to the observer/camera operator. Finally, the observer uses the infrared sensors and the high-power zoom to confirm whether it is actually a new fire and not another light source. Using any of these tools alone would be only fractionally as effective and take up more valuable time.
“As far as I’m aware, we’re one of the first states combining night vision and infrared into our aircraft to detect fires early,” Cole Lindsay, aviation coordinator for ODF’s Northwest Oregon Area, which protects approximately 3,5 million acres of forestland in northwestern Oregon from wildfire. “Using these tools together allows us to fly at night after a thunderstorm, find small fires in remote areas, and then send detailed information to our dispatch centre so that they can send out the appropriate resources to extinguish the fire.”
Once the point is determined to be a new fire it get documented and reported. The observer views the location in a map screen and the augmented reality system (ARS), which overlays all known information like roads, streams and names, onto the video screen as if they were on the ground. The still images and videos on these two screens give a sense of where the fire is and what it is doing. Going a step further, attributes of the fire are drawn and labelled on the video screen and ARS turns those into data points and polygons.
During the summer months, the aircraft is centrally based in Redmond, Oregon to allow access to the entire state. Using the MMA catch fires early is just one of the ways that ODF works to prevent larger wildfires.
In the 2022 fire season, the MMA detected 69 fires, 60of which were detected during extreme fire danger. The early detection of these fires helped to prevent the majority of them from growing into larger fires. Out of the 69 total detections, none of the fires on ODF-protected lands grew larger than 10 acres. Over the span of the season, ODF pilots and operators banked approximately 92 hours in the sky in search of new fire starts, the most in one night being 21 detections.
The MMA is also used as ‘eyes in the sky’ for incidents. The MMA provides a valuable aerial perspective and facilitates the gathering information including the fire perimeter, possible helispots and the attributes and behaviour of the fire that can be loaded into a map for the ground crews to use. The information gathered is provided to the ground as a complete package that allows ground forces to view, strategize and attack the fire with more situational awareness than they would have otherwise. In the 2022 season, the Partenavia executed four of these mapping missions.
“We’re very proud of our achievements using the Partenavia,” said Neal Laugle, ODF Aviation Unit manager. “However, with the high demand for the resource, it’s difficult to meet the needs of the entire state with just one aircraft, which leaves our team having to prioritise certain areas over others during times of extreme fire danger in the state.”
Though the aircraft and programme received investments in the 2021 Oregon Legislative Session, there is still plenty of room to grow.
“A wish list item for our program would be another multi-mission aircraft to better support the entire state and to create a backup for the agency since the Partenavia is 40 years old. The aircraft is not getting any younger and with that age comes more maintenance,” said Laugle.
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