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Aviation History
1918
1918 - 0081.PDF
JANUARY 17, 1918. 115"" In. 1'? I/I*o'64 5/3«3/16 7 3* 14 516 I'll Mm. 0.7941.588 1.984 2.381 2.778 3.175 3.572 3.969 4-763 5-556 6.350 7-9388.731 9525 S» In. 1/16 5/643/32 7/641/8 9/64 5/32 3/16 n/32 3/8 Mm. 0.794 2.381l 3.572 3.969 4.763 5.556 6.350 7.938 8.731 9.525 INTERNATIONAL AIRCRAFT STANDARDS. "' :' : •• ;' (Continued from page 25.) 3S14.—Specification for 7x7 Flexible Steel-Wire Cable—contd. REELS FOR CABLE. ENGLISH UNITS. . s1 5 Ins. I2 12 12 16 16 16 18 18 18 18 18 1,000Ins. 4 4 4 \ 77 7 710 1010 10 S ft Ins. 58 12 10 10 8 8 g s §3 Ins. ij i» *;i, if !2" 2 2 2i 5 Ins. 5 16 X6 166 18 8 24 24 3 000 it.Ins. 4 4 4 4 10 o in o 10 10 16 16 § i5 Ins. 8 » 10 " 8 8 8 10 10 ifi 16 METRIC UNITS. 3Mm.305 metres.Mm. 102 102 102 102 102 102 178 178 178 178 254254 254254 Mm. 203 203 203 203 254 254 305 305 305 305 254254 203203 Mm. 28.58 28.58 28.58 28.58 28.58 28.68 28.58 28.58 53-98 539853.98 53-98 53.98 5398 Mm. 305 305 406 406 406 406 406 406 457 457 6106l o813 813 914 metres. Mm. Mm. 102 102 102 102 178 178 254 254 254 254 254 254406 406 203203 254 254 305 305 203 203 203 203 254 254 406 406 ENGLISH UNITS. 5,000 ft. Ins. I 4 4 77 10i o10 10 JO 10 18 20 2O Ins.8 10 12 12 88 10 xo 10 10 16 16 5 Ins. it Ins.16 1616 1618 24 24 Mm. 305 J06 406 %l 610 610 610 610 813 8x3 813 813 metresMm. ' 102 x78 178 l\\ 254 254 254 254 457 457 508 508 Mm. 203 305 305 254 254 254 254 406 406 406 406 I,1 z\ 2s 2ff 2i 3* 3i 24 24 32 3636 50 50 sue UNITS. Mm. 28.58 28.58 28.5828.58 28.58 28.58 28.58 28.58 53.98 53.98 53.98 53-98 79.38 79-38 Mm. 406 406 406 406 457 610 610 610 610 813 914 9141,270 1,270 Iff 10,000 ft.Ins. 47 10 1010 Io 16 16 x6 20 22 16 I6 Ins. 10 is8 88 Io10 10 10 16 18 26 26 o 8 metres 102Hi 254%t 406 406 406 508 56o 560 406 406 254 203 203 *°4254 254 254 406 457 457 660 660 2o «•=«s I SIns. i± isx» 11 xt i?I lllll\ 2| Mm. 28.58 28.58 28.58 28.58 28.58 28.58 28.58 28.58 53-c>8 53.98 53.98 53-98 53.98 35-98 |S Ins. li li In making racks for the above reels allow a 4-in. or 102 greater width than the traverse specified above. 3I 3J- Mm. 28.58 tsfs28.58 l 53.98 53.98 53.98 79.38 79.38 79-38 79.38 79.38 -mm. CHEMICAL COMPOSITION OF STANDARD CARBON STEELS. * Phosphorus, Sulphur, i aimuNumber. 1065 1070 1080 Carbon. 0.60—0.70 0.65-0.75 0.75-0.90 Manganese. 0.50-0.70 0.50-0.70 0.25-0.50 maximum. 0.040 0.040 0.040 maximum. 0.045 0.045 0.045 TABLE OF WEIGHTS, SIZES, AND STRENGTHS OF CABLE. English Units. " ' Metric Units. Approxi- Approxi- Minimum mateweight, Minimum mate weight, breaking pounds breaking kilograms Diameter, strength, per Diameter, strength, per ioo jncij. pounds. 100 ft. millimetres kilograms. metres. 16.70.siaft/i.250(1/4 8<' / 9,200 5,800 6 0.125 1/8) 0.078 54 0.062(1/16) 3,2002'6o° I.35O92 °550 48o 10.50 8.30 5.80 2.45 0.83 0.81 7-938 6.350 5-556 4.7633 ^ 3.1W2-3fr 1.984 1.588 4.J73 3,631 2,o871,451 W9612 4I7249 2x8 24.85 15.63 12.35 8.63 6-95 3.65 1.26 3N12.—Specifications for Sheet Aluminium, GENERAL.—i. The general specifications, i Gi, shall form, according to their applicability, a part of these specifications. MATERIAL.—2. (a) Two grades are recognised : Standard No. 1, aluminium not less than 99.00 Standard No. 2, aluminium t less than 98.00 Analysis.—(b) Samples for analysis shall be obtained from a random sneer representing eacn 5 00 IDS. (2zo.s&g.) ot aluminum, or any lot weighing less than 500 lbs. (226.8 kg.), as agreed upon between the seller and the purchaser. MANUFACTURE.—3. No scrap shall be used except such as shall accumulate at the manufacturer's plant from material of the same composition and of their manufacture. WORKMANSHIP AND FINISH.—4. All sheets shall be sound, flat, free from buckles, seams, discoloration, or other surface defects. PHYSICAL PROPERTIES AND TESTS.—Tensile test.—5. (a): Minimumelnneatinnii. -M ' S±e? incnes Grade. Minimum tensile strength. (50.8 mm.). Soft-annealed.. .. 12,000 pounds per square inch (8.44 kg.,'mm.-) 30 percent. Half-hard .. .. 18,000 pounds per square inch (12.65 „ . „ . kg. mm.-) .. .. .. .. 10 percent. Hard-rolled .. .. 22,000 pounds per square inch (15.47 kg.,mm.2) 2 per cen. Bend test.—(b) Soft and half-hard sheets shall withstand being bent double in any direction over a pin having a radius equal to the thickness of the sheet without cracking. SELECTION OF TEST SPECIMENS.—6. Test pieces shall be cut from random sheets representing each 500 lbs. (226.8 kg.) of aluminum or any lot weighing less than 500 lbs. (226.8 kg.) as agreed upon between the seller and the purchaser. Test pieces may be used for purposes of analysis as under paragraph 2 (b). DiMENsroNS AND TOLERANCES.-;. Tolerances on all sheets shall be as follows : Tolerances. Thickness, American Wire Gauge (B. & S.). Inch. Millimetre. IO-II 0.003 °.°8 12-14 3 0.08 15-17 0.003 0.08 18-20 2 0.05 ai-23 0.002 O.OJ '*~x6 ° oo* °<os (To be continued.) Daring Italian Night Raid. SOME details are given by a correspondent of the Corriere Delia Sera at Italian General Headquarters of a daring night raid carried out by two large Italian bombing aeroplanes. On the night selected there was no moon, and heavy banks of clouds lay over the snow-covered terrain, blotting out the mountain peaks. Reaching a height of nearly 12,000 ft., the machines passed over the Asiago Plateau above the Cima Dodici, which is 7,800 ft. high, and then above the Val Sugana. But they reached their goal at Levico, a very important supply centre in the rear of Conrad's army. Twenty bombs were dropped on the railway station and military depSts, and several fires were seen to break out. Both aeroplanes returned safely, having covered a distance of 125 miles in an hour and 40 minutes. A Caproni Wrecked in the U.S.A. " - - ACCORDING to the New York Herald correspondent at Norfolk, Virginia, one of the largest Caproni machines was partially wrecked through falling 150 ft. The pilot, Lieut. Emilio Resnati, and the 15 passengers escaped with nothing Worse than bruises. . ' . . , 77
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