Delta Bomber Flies Over Air Show -- There she goes - the Avro A698, the world's first four-jet delta-shaped flying triangle long-ranged bomber. This impressive picture was taken as the aircraft flew over the Farnborough air show to-day. The ban on faster-than-sound flying by British ace test pilots, imposed yesterday, was raised to-day but only for to-day. The Delta bomber was to have appeared at the society of British Aircraft Constructors' show here yesterday, but was prevented form doing so b