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Aviation History
1916
1916 - 0914.PDF
I/SGHT " Aeroplane engines mayjbe~ divided roughly into four classes—vee, vertical, radial and rotary. The curves for these are shown in Figs, i, 2, 3 and 4 respectively, and the mean curves, P, Q,«R, S, are given together in Fig. 5, in which No. 93 96 97 98 99 100 101 102 103 104 105 106 95 107 108 109 110 111 112 113 114 iJ5 116 94 117 118' 119 120 121 122 123 124 125 126 127 128 129 130 Cyls. 8 12 12 8 8 8 12 12 8 12 12 12 4 6 6 6 6 6 6 6 6 4 6 3 14 9 9 7 9 9 9 9 7 9 7 7 7 7 Vee-Type Aero Engines. Bore. Stioke. Water. Engine, Dry. lb. lb. 375 90 loo ICO 105 100 120 4- 92 120 90 92 no •0 120 140 140 140 140 130 6 »35 160 150 139 164-5 30 140 250 212 140 180 192 290 Vertical-Type Aero Engines. 140 142 142 140 140 130 130 140 4-0 140 81-5 146 '75 178 160 160 175 i75 IS2 6- 146 155- 25 175 145 160 150 132 !32 IO3 75 25 90 Radial-Type Aero Engines. 176 135 "8*5 105 130 120 140 122 140 •5-0 6-0 120 140 Rotary-Type Aero Engines. 112 170 — 126 160 — 110 150 — 110 i50 — 120 150 — 105 140 — 124 145 _ 124 145 _ 124 145 _ 124 140 — 625 625 450 450 416 871 745 688 940 75o 1,000 329 592 597 595 595 538 538 597 380 329 535 165- 761 500 300 490 330 380 286 286 246 260 215 212 210 209 Total, lb. I75 625 625 450 450 556 1,121 957 828 1,120 942 1,290 354 767 742 755 7 A5 670 670 700 455 354 625 i6S- 937 635 300 575 330 380 286 286 246 260 215 212 210 209 Dimensions in mm. are in roman type, />i/nensitms in inches are in italic type. Weights used in calculation are in heavy type. they can be compared with the mean curves of the other classes of engines drawn to the same scale. " On these drawings there are three isolated points relating to early steps in the foundation of aviation ; these points are •umbered as follows :— "93. The Renault s-cylinder air cooled vee type engine (k) with which H. Farman made the first cross-country flight from Chalons-sur-Marne to Rheims, October *oth 1908. ° ' " 94- The Anzani 3-cylinder air cooled radial type engine (/) with which L. Bleriot made the first cross-Channel flight, July 25th, 1909. The Aeronautical Institute and its "Supporters." LORD MONTAGU of Beaulieu is desirous of having it known that the " Institute "is not authorised to use his name m connection with their affairs for any purpose whatsoever Lord Montagu has previously written withdrawing his name, but he understands it is still being used by the Institute." German Aviators Interned. A GERMAN aviator who dropped bombs on Belfort on the afternoon of October 13th was forced to land, owing to lack of petrol, at Soleure, Switzerland, and has been interned. According to the Maasbode, a German aeroplane landed near St. Kruis, in Holland, last week, and the occupants have been interned. The Echo Beige also reports that a German aeroplane crashed near Wavre, but nothing is said as to the pilot. OCTOBER 19, 1916. "95. The Green 4-cylinder water cooled vertical type engine (m) with which S. F. Cody made the circuit of England in 1911. " On the summary, Fig. 5, the tangent hyperbola to the mean racing car curve is drawn, and it is interesting to note how close to this curve lie the points 93, 94, and 95 ; the vertical engines have progressed since that day, but not so markedly as have the vee and radial types. It is very f ' \ Hypirbotaa ft—.. Of net Qvrvm . . I f /. / / ~y •• * / / j // // i* y/-7 / y 4 1 Q h / . / ?,%>' / / t / ! 1 ••'' • 94 ; / i 1 1 S3 i / / F / I F t I \ O > 0 U ! c T 1 0 R.P.U. 2700 2100 1500 1200 900 300 9 0J4 FEET Fig. 5.—Mean equivalent radius ; curves compared. References : C, commercial vehicles, 1913-16 ; D, public service vehicles ; F, engine builders, 1911-16; I, 4-cyl. passenger cars, 1913-16 ; J, 4-cyl. racing cars, 1911-16 ; M, 6-cyl. passenger cars, 1913-16 ; 0,12-cyl. passenger cars, 1914-17 ; 93, Renault : cross-country flight, 1908 ; 94, Anzani : cross-Channel flight, 1909 ; 95, Green: circuit of England, 1911 ; P, vee-type aero engines ; Q, vertical-type aero engines ; R, radial-type aero engines ; S, rotary-type aero engines. remarkable that the mean curves for both the last mentioned types have the same tangent hyperbola. But it is when we consider the rotary aeroplane engine that we realise to the full what progress has taken place in weight-saving in the short space of five years, for these engines have a mean effective radius some 50 per cent, greater than that shown by the mean curve for radial engines, and nearly^ double that shown for the vertical and for the vee types. Some of these types of engines, it is true, are fitted with a reduction gear, but the tangent hyperbola which defines the limit so obtainable shows that at present they do not average more than 70 per cent, of the corresponding effective radius of the rotary type." H H Lights on Air Raid Nights. A FINE of 19 guineas was imposed on Brigadier-General Charles Stewart Prichard, C.B., D.S.O., of Ruston House, Patrington, at an Eastern County Petty Sessions on Octo ber 13th for an unshaded light on an air-raid night. At the same court a farm servant was fined 2 guineas and 10s. costs for striking a match on an air-raid night. Some other cases of match-striking are referred to in. a leader on page 896. The Zeppelin "L 33." IT has been announced that the Zeppelin " L33," which came down near the Essex Coast, was 680 ft. long and had four gondolas, one containing three 6-cylinder 240 h.p. engines, while each of the three other gondolas con tained a similar engine ; there were five propellers. She was fitted with 60 bomb-droppers, five machine guns and two light quick-firers. 910
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