By

Principal investigators
Brian Argrow; Eric Frew

Funding
National Science Foundation; the National Oceanic and Atmospheric Administration; and 񱦵 Grand Challenge

Collaboration + support
Ann and H.J. Smead Department of Aerospace Engineering Sciences; Integrated Remote and In Situ Sensing initiative at 񱦵; University of Nebraska- Lincoln; Texas Tech University; University of Oklahoma; and the NOAA National Severe Storms Laboratory

Project TORUS team

Drone illustration

Brian Argrow next to drone on roof of carResearchers from 񱦵 flew drones into severe storms this springfor project TORUS, one of the largest and most ambitious drone-basedinvestigations of meteorological phenomena ever, with students leadingmuch of the work.

Project TORUS—Targeted Observation by Radars and UAS ofSupercells—is a partnership between 񱦵, the University ofNebraska-Lincoln (which is leading the work), Texas Tech University,the University of Oklahoma and the National Severe StormsLaboratorythat will continue into 2020. The goal of the project is to collect data toimprove the conceptual model of supercell thunderstorms—the parentstorms of the most destructive tornadoes—to improve forecasting.According to Smead Aerospace Professor Eric Frew, a principalinvestigator on the project, better forecasting means more warning timeand fewer false alarms, which could save lives in the future.

“What was really exciting about what we were able to accomplish wasthat these drones were designed, fielded and operated by students,”Frew said. “I had sophomores and juniors on this team accomplishingsomething that had never been done before.”

Funding for the project came from the National Science Foundation andthe National Oceanic and Atmospheric Administration. Support alsocame from the 񱦵 Grand Challenge.

񱦵’s portion of the project was led by faculty from the Collegeof Engineering and Applied Science through the Integrated Remoteand In Situ Sensing initiative. The team was responsible for pilotingup to three drones around the storms simultaneously to measuretemperature, pressure, humidity and wind speeds. Drones are a criticalcomponent of the overall TORUS project because they sense data frominside the storm—data that cannot be obtained without physically beingthere to take the measurements. Thatinformation will be combinedwith remote sensing data obtained by the other collaborators collectedaround the same storm later.

In all, the 񱦵 team totaled over 40 hours of air time on 51flights, including seven tornado-producing storms, over the nearlymonthlong deployment throughout the Great Plains.

The university has been using drones for this type of work since 2010and was the first in the world to do so. The lessons learned over theyears informed the design of the new unmanned aircraft used thisspring. Built from lightweight yet high-strength foam fromRiteWing RC,the drones include an avionics system and many other aspects custombuiltby the team. They are also modular in design, allowing for fast andeasy repairs in the field.

Aerospace engineering senior Danny Liebert pilots one of the drones forthe team and said he loves how rugged it is compared to the previous“TTwistor” model.

“The TTwistor drone we used was great but just not as durable. Thesenew aircraft are awesome. They take it like a champ out there,” he said.Frew said he can envision a future in which drones are used as forwarddeployment tools for weather prediction and data collection. Work onTORUS and future projects can make that a reality.

“We can see the technology advancing to a point where small townsor individuals have these drones and they release them into precursorenvironments to help feed into the weather forecasting system, muchlike the citizen scientists who report temperature and snow or wateraccumulations every day around the U.S.,” he said.

Researcher holding drone