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时间: 2019年12月07日 17:23

Through half-closed shutters sudden radiance gleam, Not if I can help it. But it is so hard to say just the exact truth. When the R.F.C. was founded鈥攁nd in fact up to two years after its founding鈥攊n no country were the full military potentialities of the aeroplane realised; it was regarded as an accessory to cavalry for scouting more than as an independent arm; the possibilities of bombing were very vaguely considered, and the fact that it might be possible to shoot from an aeroplane was hardly considered at all. The conditions of the British Military Trials of 1912 gave to the War Office the option of purchasing for 锟?,000 any machine that might be awarded a prize. Machines were required, among other things, to carry a useful load of 350 lbs. in addition to equipment, with fuel and oil for 4? hours; thus loaded, they were required to fly for 3 hours, attaining an altitude of 4,500 feet, maintaining a height of 1,500 feet for 1 hour, and climbing 1,000 feet from the ground at a rate of 200 feet per minute, 鈥榓lthough 300 feet per minute is desirable.鈥?They had to attain a speed of not less than 55 miles per hour in a calm, and be able to plane down to the ground in a calm from not more than 1,000 feet with engine stopped, traversing 6,000 feet horizontal distance. For those days, the landing demands were rather exacting; the machine should be able to rise without damage from long grass, clover, or harrowed land, in 100 yards in a calm, and should be able to land without damage on any cultivated ground, including rough ploughed land, and, when landing on smooth turf in a calm, be able to pull up236 within 75 yards of the point of first touching the ground. It was required that pilot and observer should have as open a view as possible to front and flanks, and they should be so shielded from the wind as to be able to communicate with each other. These are the main provisions out of the set of conditions laid down for competitors, but a considerable amount of leniency was shown by the authorities in the competition, who obviously wished to try out every machine entered and see what were its capabilities. He took up a book and threw himself back in his chair as if he had dismissed the subject. She wears other folks to the bone, and that's worse, returned the pitiless Lydia. 鈥楯uly 23.鈥擨 saw to-day a sight which perhaps never met your eyes in India, and which I never wish to see again; though it was not without something of melancholy beauty. On Sunday towards dusk I was with some of the boys, and they called out 鈥淟ocusts!鈥?I looked up into the sky, and saw what my old eyes would have considered harmless clouds high above me; but the young eyes must have detected the motion of countless wings. To-day there was no possibility of mistake. I was in a Zenana, in the full light of day, gazing up at myriads and myriads,鈥攄ark against white clouds, light against the blue sky,鈥攑assing over Batala. They looked to me like God鈥檚 terrible army; so strong; so vigorous; not one amongst the millions appeared to be weary; not one did I see drop down as if faint from long flight. They flew as if they had a purpose; our fair green fields did not appear to tempt the destroyers,鈥攐nly I saw a comparatively small number in one,鈥攂ut they were clearly intent on going somewhere else. Alas for the land where they alight! A Native told me that they would probably come back again. How helpless is man against such a foe! We can only ask for mercy, as Pharaoh did.鈥? � � TO MRS. HAMILTON. 鈥楾hanks for the paper about the Telephone. But I hope that we may not hear our Queen鈥檚 voice by it, if it is to sound like a trombone.鈥? When Manly designed his radial engine, high-speed internal combustion engines were in their infancy, and the difficulties in construction can be partly realised when the lack of manufacturing methods for this high-class engine work, and the lack of experimental data on the various materials, are taken into account. During its tests, Manly鈥檚 engine developed 52鈥? brake horse-power at a speed of 950 revolutions per minute, with the remarkably low weight of only 2鈥? lbs. per horse-power; this latter was increased to 3鈥? lbs. when the engine was completed by the addition of ignition system, radiator, petrol tank, and all accessories, together with the cooling water for the cylinders. 鈥楧ec. 13, 1877.鈥擳he overland mail was particularly long in arriving this time. I hoped that it would bring me something particularly nice; and what should come to-day but your dear loving letter, and the first halves of your munificent contribution to our schools! How very kind and liberal my Laura is! I had been speaking to Mr. Beutel but yesterday of those two village schools, which would鈥攆rom the lowness of funds鈥攈ave been dropped, but for your last handsome gift. I was asking Mr. Beutel how far your Rs.55 would carry them on. He replied鈥攖ill past the beginning of March. Beyond that there was no provision for them at all.