ONE OF THE EARLY GLIDERS with which Otto Lilienthal made successful flights. To hold himself to the glider he passed his arms through padded tubes and gripped a cross-
One of the most interesting and important training devices is the Link trainer, which is the result of many years’ attempts to produce a device to simulate on the ground the impressions of flying. An artificial spin in the Link trainer can be so realistic that the pilot becomes airsick and giddy; although the Link trainer is invaluable as an introduction to flying, its most important function is to teach instrument flying of an elementary or advanced nature.
In appearance the trainer resembles the general lines of an aeroplane. There are short wings and a tail unit on a single-
The inventor of the idea on which the Link trainer was based was Edwin C. Link, who was a flying instructor and an expert on the manufacture of automatic pianos. In its original form the trainer was used in amusement parks, but when instrument flying grew in importance the Link trainer was developed by its inventor with Casey Jones, an American racing pilot, and with other pilots and engineers. This chapter is contributed by Arthur Clark.
FOUR PRESSED GRAVEL RUNWAYS are incorporated in the landing area of the aerodrome at Helsinki. The aerodrome is seven miles north-
Finnish Air Routes
PRESENT AND PROJECTED FINNISH AIR ROUTES. Helsinki is served by two international routes, one of which comes from Germany and Poland and reaches Helsinki via Tallinin. The other routes comes from Great Britain and Scandinavia through Stockholm and Turku, the Finnish port on the Gulf of Bothnia.