The principal engines of British, French, and American design used in the war period and since are briefly described under the four distinct types of aero engine; such notable examples as the Rolls-Royce, Sunbeam, and Napier engines have been given special mention, as they embodied鈥攁nd still embody鈥攁ll that is best in aero engine practice. So far, however, little has been said about the development of German aero engine design, apart from the early Daimler and other pioneer makes. He鈥檇 been in this spot before, and he鈥檇 always found something left. Arnulfo glanced back andsaw the man who鈥檇 beaten the best in the world coming after him with everything he had. Arnulfoblazed through the heart of Urique, the screams building as he got closer and closer to the tape. I don't know that all that is true. But if it be so, it seems to me that there is great cause for pity, Minnie would reply. And the answer was set down to poor dear Miss Bodkin's eccentricity. 看黄a大片 He pitched facedown into the sand. 鈥淲hen you鈥檙e focused on the hunt, you push to the limits. There were, in the list of aero engines compiled in 1910, five rotary engines included, all air-cooled. Three429 of these were Gnome engines, and two of the make known as 鈥業nternational.鈥?They ranged from 21鈥? to 123 horse-power, the latter being rated at only 1鈥? lbs. weight per brake horse-power, and having fourteen cylinders, 4鈥?3 inches in diameter by 4鈥? inches stroke. By 1914 forty-three different sizes and types of rotary engine were being constructed, and in 1913 five rotary type engines were entered for the series of aeroplane engine trials held in Germany. Minor defects ruled out four of these, and only the German Bayerischer Motoren Flugzeugwerke completed the seven-hour test prescribed for competing engines. Its large fuel consumption barred this engine from the final trials, the consumption being some 0鈥?5 pints per horse-power per hour. The consumption of lubricating oil, also was excessive, standing at 0鈥?23 pint per horse-power per hour. The engine gave 37鈥? effective horse-power during its trial, and the loss due to air resistance was 4鈥? horse-power, about 11 per cent. The accompanying drawing shows the construction of the engine, in which the seven cylinders are arranged radially on the crank case; the method of connecting the pistons to the crank pins can be seen. The mixture is drawn through the crank chamber, and to enter the cylinder it passes through the two automatic valves in the crown of the piston; the exhaust valves are situated in the tops of the cylinders, and are actuated by cams and push-rods. Cooling of the cylinder is assisted by the radial rings, and the diameter of these rings is increased round the hottest part of the cylinder. When long flights are undertaken the advantage of the light weight of this engine is more than counterbalanced by its high fuel and lubricating oil consumption, but there are other430 makes which are much better than this seven-cylinder German in respect of this. Ferd. I bless the hand that gave the wound.