The 54th volume of the journal contains articles based on the research results that focus on solving current engineering issues related to alloy machining in aerospace production, steel atmospheric corrosion, soil stabilisation in construction, modelling a corona discharge separation of fine particles, and designing a low-cost irradiance meter with a remote data logger. The separate part of the articles is dedicated to developments and engineering solutions in the area of renewable and traditional energy. The presented research results will be helpful to specialists in machinery, construction and energy production.
