Adam Drihany
Research Mentor: Kimberlee Kearfott
Mentor Department: NERS, Engineering
Author(s): Adam Drihany, Kimberlee Kearfott
Session: Session 2 (10:00 AM – 10:50 AM)
Presentation Type: Poster 44
Abstract
Aerial radiation mapping requires platforms capable of covering large areas efficiently while carrying detector payloads at stable speeds. This work presents Atlas Falcon, a hybrid VTOL fixed-wing UAV that combines vertical takeoff with efficient wingborne cruise on a low-cost, 3D-printed platform designed to carry radiation detectors, supporting electronics, and an added microcomputer for intelligent mapping and navigation. The aircraft uses a delta-wing carbon-fiber-reinforced nylon airframe with four vertical-lift motors, one cruise motor, altitude- and obstacle-detection LiDAR, and a 1.5 L payload bay. Ground testing showed that the thrust-to-weight ratio is 1.7:1, sufficient to maintain lift capability for its 2.5 kg mass and an additional 0.7 kg payload. Finite-element analyses revealed that the components could withstand loads of 12 kg. Experimental testing with an 8 kg load revealed that PLA-Aero was too brittle, necessitating the use of PAHT-CF. Further weight reductions of 400-800 g are believed to be achievable through additional infill and material optimization. Bench testing of the propeller-driven cooling system showed reduced electronics temperatures by 10–12°C and battery temperatures by 3–5°C under sustained loads. Sensor testing showed obstacle detection with up to 207° of coverage and reliable detection within 0.5–3.5 m (±8 cm accuracy) for safer autonomous flight. Laboratory testing indicates a cruise speed of 25.1 m/s, 46 minutes of endurance, and a 40 km range. The platform provides 14 minutes of endurance at mapping speeds of 1–5 m/s. Atlas Falcon demonstrates that a radiation-mapping platform can be built from off-the-shelf and 3D-printed components for ~$1,200 (<$250 structural cost).
