For these fast machines a version of Machines that Challenge the World's Best: Bomber's the Rolls-Royce Merlin engine is used. It has a ducted radiator, a Speed of 279 m.p.h. at 14,000 Feet form of radiator which reduces the drag almost to vanishing point, and am able to give for the first time details of the tactical strength which may eventually be modified to provide a small thrust. This engine of the new Royal Air Force, writes the "Morning Post is cooled with é¢thylene-glycol, and Aeronautical Correspondent. as a comparison ¡with the capabilities The Air Ministry has granted permission for the publication of car engines it may be mentioned that the Merlin is of 27 litres cap-of the speeds, dimensions, and armament of the five new bombers city, and, therefore, gives nearly 40 which are now in series of production, and are already beginning lip. per litre. to reach the squadrons, The dimensions of the new bom-
These aeroplanes are the: single gun, and a most ingenious trap bers show that the Vickers Wellesley Fairey Battle, medium bomber; door is arranged in it to enable the has the largest span of the single-Bristol Blenheim, medium bomber; gunner to leap from the machine engined machines with 73 feet 6 in-Handley Page Harrow, heavy bom-with his parachute in case of emer-ches. This big span is made possible ber; gency. by the geodetic construction, which is exceptionally stiff in torsion, and 'Armstrong Whitworth Whitley, The' trap door is about the size so allows a very long, narrow wing heavy bomber; of a dustbin lid, and is on the under to be used.
Vickers Wellesley, general purpose side of the turret, facing the rear.
The Bristol Blenheim has a span machine and long range bomber.
'A spring-loaded catch with a big of 56 feet 6 inches a length of 39 This group of aeroplanes would band ring closes N. If the gunner feet 9 inches, and a height of 9 feet form the spear head of any large-has to jump he merely snatches down 9% inches, It carries a crew of scale bombing attack which the the catch and falls out of the tail three.
Royal Air Force was called on to of the machine.
The Fairey Battle has a span of 54 make. The machines are the most advanced military types yet put into
Text read from the printed page and cleaned; old type leaves the occasional error.