The article investigates the possibility of carrying out verification volumetric liquid meters at place operation and presents procedure for such verification. issues metrological support measuring instruments (MI) aircraft refueling service are considered. data on in EU member states presented.

Among the alternative fuels enabling energy transition, hydrogen-based transportation is a sustainable and efficient choice. It finds application both in light-duty heavy-duty mobility. However, hydrogen gas has unique qualities that must be taken into account when employed such vehicles: high-pressure levels up to 900 bar, storage composite tanks with temperature limit of 85 °C, negative Joule...

As the number of hydrogen refueling stations has increased rapidly in recent times, evaluating their incident training programs for first responders, gained importance. In this study, Delphi method was used investigating programs, and importance consensus analyzed using analytical hierarchy process (AHP). Location operating methods emergency shutdown devices, safety distance, response procedure...

Autonomous aerial refueling (AAR) is an important capability for an unmanned aerial vehicle (UAV) to increase its flying range and endurance without increasing its size. This paper presents a novel tracking method that utilizes both 2D intensity and 3D point-cloud data acquired with a 3D Flash LIDAR sensor to establish relative position and orientation between the receiver vehicle and drogue du...

A two‐dimensional model investigating the hydrogen charging process in a combination reactor filled with both LaNi4.3Al0.4Mn0.3 and 2LiNH2‐1.1MgH2‐0.1LiBH4‐3wt.%ZrCoH3 materials has been developed. The selected configuration is a cylindrical reactor of 32 cm of diameter where the MeH is filled in annular tubes separated from the complex hydride bed by a gas permeable layer. The diffusion of hy...

An essential capability for an unmanned aerial vehicle (UAV) to extend its airborne duration without increasing the size of the aircraft is called the autonomous aerial refueling (AAR). This paper proposes a sensor-in-the-loop, non-tracking method for probe-and-drogue style autonomous aerial refueling tasks by combining sensitivity adjustments of a 3D Flash LIDAR camera with computer vision bas...

Plasma metabolites provide information about the physiological state and fuel use of birds, and have been used for predicting refueling rates of birds during migratory stopovers. However, little is known about the effect of diet on metabolite concentrations in small songbirds. We investigated the effect of dietary macronutrient composition on lipid and protein metabolites in captive White-throa...