It consisted of the following parts: - (a) A system of aeroplanes arranged like the capital letter T at a certain upward angle to the horizon and bearing a general resemblance to box kites; (b) a pair of very light propellers driven at a high speed; and (c) an exceedingly light and powerful petrol engine.
Water-power and petrol largely compensate for the lack of coal.
In the years 1903 and 1904 petrol motors adapted for ploughing and other agricultural operations formed a prominent feature of the exhibits.
Thanks, however, to the efforts of automobile engineers, great improvements were now being effected in the petrol engine, and, although the certainty and trustworthiness of its action still left something to be desired, it provided the designers of flying machines with what they had long been looking for - a motor FIG.
The four-cylinder petrol engine was placed on the lower aeroplane a little to the right of the central line, being counterbalanced by the driver (and passenger FIG.
In France, where large stocks of alcohol were left over from the manufacture of explosives during the war, it was unable to compete with petrol as regards price, and was only being used in comparatively small quantities, and mixed with benzol.
Whilst alcohol is applied in motor engines in a similar manner to petrol, its vapour mixed with a proper proportion of air being drawn into the cylinder where it is compressed and ignited, it cannot be used with maximum efficiency by itself in engines such as are fitted to modern motors because it requires a higher degree of compression than petrol engines are usually designed to stand, and also because, unless special arrangements are made, a motor engine will not start readily from the cold with alcohol alone.
Petroleum, according to the report of the National Conservation Commission in 1908, was then the sixth largest contributor to the Petrol nations mineral wealth, furnishing about one-sixteenth eum.