A team of sophomores and freshmen from McIntosh competed against the best in the nation to win second place in a drama-filled drone challenge in Muncie, Indiana.
The McIntosh MultiRotor Team stepped onto the flight line amid worsening weather conditions which included 15 mph winds and gusts of up to 20 mph. Weighing heavily on their minds were that these same conditions had just taken its toll on two other teams resulting in one lost drone and one crash landing. Earlier in the day, a team from an aviation high school in Seattle sponsored by Boeing had performed an almost perfect mission, as had a team from a STEM high school in Minnesota. They knew it would all come down to how well they handled the pressure and the weather conditions during the next 45 minutes of their mission attempt.
The prestigious UAS4STEM contest was designed by the Association of Model Aeronautics (AMA) to introduce students to the positive impact that drone technology could have on our future and to provide a program for students to learn about the technical intricacies of autonomous drones. The contest requires teams to build and customize a drone and to learn how to configure and program the drone to perform autonomous missions.
The drone could be programmed to fly missions autonomously from a ground station computer connected by a radio telemetry uplink while the team monitored a live video feed transmitted by the drone to a screen on the ground. The challenge was to search and locate and identify hidden objects in a designated search area. Teams are judged on their ability to find all the objects and accurately report the GPS coordinates of each object.
The mission this year was life-or-death challenged based on finding a lost group of hikers in a remote area before a major storm would consume the area. Little did the organizers realize how realistic the premise of the contest would turn out to be. A frontal storm system was approaching, preceded by winds exceeding 15mph. Halfway through the day, a series of violent storms hit the area, creating very difficult conditions for the teams.
According to Marcus DiBattista, the mission telemetry specialist, “We were prepared for the worst, and this was pretty much it.”
Back on the flight line, the team, comprised of Robbie van Zyl, Parker Korn, Marcus DiBattista, Ian Buckalew, Andrew Walter and Matt Harmon, realized that the months of preparation and practice would come down to the next 45 minutes. What they did not know at that time was that they had scored highest of all the teams on the Flight Readiness Briefing – a presentation to judges of how they have modified the drone for the challenge and how they plan to approach the mission.
As their drone took off on its mission, the next storm was rolling in and the wind speed progressively increased and became more gusty. In the words of Ian Buckalew, the mission controller, “the worsening conditions and high winds required us to rewrite and upload parts of the mission program mid-flight to compensate for the wind.”
However, the entire mission could not be autonomous. During the process of locating the objects using the precision onboard GPS, Matt Harmon, the team Pilot, had to take manual control of the drone “The stormy conditions we experienced were more challenging from a pilot’s perspective than anything I’ve flown in before.”
Less than 2 minutes before the end of the allotted time, the team was still searching for the last “missing hiker.” Despite being very low on battery, they decided to make one final search attempt in an area they had not previously searched. Their excitement as they spotted the last missing hiker was sobered as they realized that they were critically low on battery and had less than 2 minutes before returning to base.
After tagging the location they sent a “return to base” command. Less than 100 yards from the base the drone’s battery reached a critical voltage level and the team initiated a controlled emergency landing. Fortunately, the drone was close enough to base to be recovered and Paker Korn and Andrew Walter who had less than 60 seconds to run out to recover the distressed drone.
The team had just completed a perfect mission and the first place in the contest came down to the young McIntosh team and a team of upperclassmen from Minnesota. In the end, when the final position of the objects were compared, the Minnesota team’s superb mission narrowly edged out the McIntosh team. On two of the objects the McIntosh team had missed the actual location by less than 3 meters.
According to Robbie van Zyl, the mission commander, “Our understanding of the technology was among the best but in the end it was the ability to work well together as a team of Chiefs that gave us a shot at winning the national title.”
Robert Grgetic, the McIntosh coach, was delighted with the final result.
“This was an incredible experience to see these Chiefs compete against the best in the nation and to take second place. The whole season was incredible, I have seen this team learn things related to physics and engineering that most people will only be exposed to at engineering school.”
