Abstract: According to an example aspect of the present invention, there is provided a drone station comprising a housing having a cavity, and a structure permeable to air and configured to be moved from a first position into a second position and reverse, wherein a platform for landing, storing and starting of a drone is provided by the structure within the cavity in the first position, and wherein an entry into the cavity or an exit out of the cavity through a ventral access is provided for the drone in the second position.

Abstract: According to an example aspect of the present invention, there is provided a sensor comprising at least one strut configured to be coupled to a surface of an object at a first end of the strut, a structure connected to a second end of the at least one strut, wherein the structure is V-shaped, U-shaped, curved or arched and configured to be coupled to the surface at both ends, a plurality of cavities positioned along the structure on both sides of the at least one strut, and a plurality of fibre-optic pressure transducers, wherein a single fibre-optic pressure transducer is arranged within each of the cavities, and wherein the sensor is configured such that at least some of the fibre-optic pressure transducers are arranged at different distances from the surface of the object.

Abstract: According to an example aspect of the present invention, there is provided a drone station comprising a housing having a cavity, and a structure permeable to air and configured to be moved from a first position into a second position and reverse, wherein a platform for landing, storing and starting of a drone is provided by the structure within the cavity in the first position, and wherein an entry into the cavity or an exit out of the cavity through a ventral access is provided for the drone in the second position.

Abstract: A method and an apparatus for the gaseous reduction of particulate iron ores is disclosed, wherein the reduced ore, commonly called DRI (Direct Reduced Iron) or sponge iron, is treated in a vertical shaft moving bed furnace and discharged from said furnace in solid particulate form at high temperature, e.g. above 500.degree. C. The shaft furnace is of the type wherein a bed of particles descends by gravity through said furnace which has an upper section where ore pellets, lumps, or the like are reduced by reaction with a hot reducing gas, and a lower section of a downwardly tapering, preferably, in a generally conical shape, which converges to an outlet discharge orifice of smaller cross sectional area than the rest of said furnace.