Download scientific diagram | Laser scan of power plant boiler unit II (side view). With a height of almost 50m, this is a medium-sized unit. The flight tests were conducted in the lower part of the boiler. from publication: A UAV system for inspection of industrial facilities | This work presents a small-scale Unmanned Aerial System (UAS) capable of performing inspection tasks in enclosed industrial environments. Vehicles with such capabilities have the potential to reduce human involvement in hazardous tasks and can minimize facility outage... | UAV, Navigation and Micro-Electrical-Mechanical Systems | ResearchGate, the professional network for scientists.