Produced by Dianne Bean. HTML version by Al Haines. British Airships: Past, Present and Future by George Whale (Late Major, R.A.F.) CHAPTER I INTRODUCTION CHAPTER II EARLY AIRSHIPS AND THEIR DEVELOPMENT TO THE PRESENT DAY CHAPTER III BRITISH AIRSHIPS BUILT BY PRIVATE FIRMS CHAPTER IV BRITISH ARMY AIRSHIPS CHAPTER V EARLY DAYS OF THE NAVAL AIRSHIP SECTION--PARSEVAL AIRSHIPS, ASTRA-TORRES TYPE, ETC. CHAPTER VI NAVAL AIRSHIPS: THE NON-RIGIDS-- S.S. TYPE COASTAL AND C STAR AIRSHIPS THE NORTH SEA AIRSHIP CHAPTER VII NAVAL AIRSHIPS: THE RIGIDS RIGID AIRSHIP NO. 1 RIGID AIRSHIP NO. 9 RIGID AIRSHIP NO. 23 CLASS RIGID AIRSHIP NO. 23 X CLASS RIGID AIRSHIP NO. 31 CLASS RIGID AIRSHIP NO. 33 CLASS CHAPTER VIII THE WORK OF THE AIRSHIP IN THE WORLD WAR CHAPTER IX THE FUTURE OF AIRSHIPS CHAPTER I INTRODUCTION Lighter-than-air craft consist of three distinct types: Airships, which are by far the most important, Free Balloons, and Kite Balloons, which are attached to the ground or to a ship by a cable. They derive their appellation from the fact that when charged with hydrogen, or some other form of gas, they are lighter than the air which they displace. Of these three types the free balloon is by far the oldest and the simplest, but it is entirely at the mercy of the wind and other elements, and cannot be controlled for direction, but must drift whithersoever the wind or air currents take it. On the other hand, the airship, being provided with engines to propel it through the air, and with rudders and elevators to control it for direction and height, can be steered in whatever direction is desired, and voyages can be made from one place to another--always provided that the force of the wind is not sufficiently strong to overcome the power of the engines. The airship is, therefore, nothing else than a dirigible balloon, for the engines and other weights connected with the structure are supported in the air by an envelope or balloon, or a series of such chambers, according to design, filled with hydrogen or gas of some other nature. It is not proposed, in this book, to embark upon a lengthy and highly technical dissertation on aerostatics, although it is an intricate science which must be thoroughly grasped by anyone who wishes to possess a full knowledge of airships and the various problems which occur in their design. Certain technical expressions and terms are, however, bound to occur, even in the most rudimentary work on airships, and the main principles underlying airship construction will be described as briefly and as simply as is possible.