To reverse the roles for a change, witness the enthusiastic helpers and sponsors of the Aerobility disabled fliers’ charity building their own airplane.

Delivery drones are imagined as helicopters dropping parcels on doorsteps. Proving this a misnomer are Bulgarian brothers Konstantin and Svilen Rangelov, with their quarter-scale model of Dronamics Black Swan.

Ground radar tapes: if there isn’t an accident, they serve no useful purpose. Wrong. Detailed analysis can yield a cornucopia of data, valuable to airports and airlines alike