ABC HELICOPTERS 2'6

Details, specifications, photographs and silhouettes of all important types of helicopters built in the world.

It is five years since the last edition of ABC Helicopters was Published I In that time the helicopter has made tremendous progress, to the extent that it has not only become firmly established as a transport vehicle but has even replaced fixed-wing aircraft for some military duties, such as carrier-based anti-submarine work. There have been big technical changes, too. As well as the simple helicopters of a few years ago, we now have convertiplanes of a dozen different kinds. The autogyro is making a big come-back, and we have a whole new generation of strange hovercraft, ground-cushion vehicles, flying jeeps and similar machines which never seem quite able to make up their minds whether they are aircraft, motor cars or ships.

So far as possible, we have included them all in this book, and the result is by far the most comprehensive coverage of helicopters and other VTOL aircraft ever published.