This week’s cover picture, from a Flight photograph, shows a De Havilland Dragonfly aircraft during a test flight. The Dragonfly seats five, and at sea level has a maximum speed of about 145 miles an hour.
THE AEROPLANE PROPOSED BY HENSON in his patent of 1842. Power was to be obtained from a light steam engine to drive paddle wheels or other propellers. The design was for a huge monoplane built of bamboo and hollow wooden spars braced with wires. This illustration shows the completed machine as seen from below, and the framework of the machine as seen from above. There are three spars running the whole length of the wings. The centre spar is of rectangular section; the outer two are of oval section and taper towards their ends. Sections at the centres and ends of the tapering spars are shown in the inset. This inset also shows plan and side views of a turnbuckle used to tighten the bracing wires.