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Aviation History
1937
1937 - 1976.PDF
70 FLIGHT. JULY 15, 1937. tact-by wireless from the moment she left Botwood at 10.12 on what her skipper tailed "a pleasant joy-ride." The more important reports from Capt. Gray were: — 10.30 p.m. (B.S.T.) .. 180 miles out. 12.0 ,, „ .. Met first fog; position 50.27 N., 47-35 W. 4.6 a.m. (B.S.T.) .. Passed Caledonia 952 miles out. 8.30 ,, ,, .. 400 miles from Foynes. 10.47 ,, ,, . . Landed at Foynes. The crossing took 12 hr. 34 min. in the air. Clipper Ill's average height was 10,000ft., and the distance covered on a great circle course some 30 miles shorter than Cale donia's, whose skipper flew, as explained in last week's issue, on a track approximating to a rhumb line in order to simplify the navigation. Clipper Ill's average was 156 m.p.h., and hei crew were: Capt. H. E. Gray (Com mander), W. S. Delima (First Officer), W. M. Masland (Second Officer), CD. Wright (Engineer Officer), E. W. Smith (Assistant Engineer), T. J. Roberts (Radio Opera tor), and W. T. Thaler (Steward). At Foynes they were welcomed by Mr. de Valera himself. Each of th^e boats used about two-thirds of the fuel taken aboard. Caledonia, for instance, took off with 2,320 gal lons and used about 1,700 of them. Sikorsky at Southampton Two days laterT on July 8, the Pan-American boat flew on from Foynes to Hythe, Southampton, where she was hauled up on the slipway in order that her engines and auxiliaries might be serviced. Her crew travelled up to London and were entertained at a private dinner. On the same day Caledonia was taken on a rather more ambitious jump—from Botwood to Montreal (886 miles), where Capt. Wilcockson put her down on the St. Lawrence at Boucher- ville. The Caledonia arrived at New York from Montreal last Friday, July 9, and flew low over the sky-scrapers before alighting at Jae base in Long Island Sound. Her captain and crew were welcomed by the British Consul-General in New York, Sir Gerald Campbell; the Air Attache to the British Embassy at Washington, Group Capt. T. E. B. Howe; the President of Pan-American Airways Mr. Juan Trippe; and officials of the United States Government. The Caledonians spent last week-end in New York— incidentally in a heat wave—and were due to start their return journey to Montreal on Monday, with a view to leaving for the return journey to Ireland to-day, Thursday. In London, Lord Swinton, Secretary of State for Air, received Capt. Gray, Commander of the Sikorsky. THE TWO BOATS COMPARATIVE DATA DIMENSIONS. Span Length Height Wing area Wins; loading Weight, empty 1-uel load (87 octane) Pavload (crew and mail) All up weight PERFORMANCE. Maximum speed Cruising speed Landing speed Ceiling Cruising range Rate of climb Engines. (9-cylinder radials.) Capacity Normal output Normal R.P.M Rated altitude Take-off power Weight Power loading Sikorsky S-42-B (long range). 118 ft. 2 in. 68 ft. 21 ft. 5 in. 1,340 sq.ft. 33.9 lb./sq. ft. 24,0001b. 19,800 lb. (approx.) 1,600 lb. (approx.) 45,500 lb. 188 m.p.b. at 7,000 ft. 163 m.p.h. 65 m.p.h. 15,500 ft. (Service) 3,500 miles. 800 ft./min. Four Pratt & Whitney Hornets. 27.7 litres. 750 h.p. (total 3,000 h.p.) 2,250 r.p.m. 7,000 ft. 800 h.p. (total 3,200 h.p.) 1,015 lb. 15.1 Ib./h.p. Short Empire Boat (long range). 114 ft. 88 ft. 31 ft. 9| in. L500 sq. ft. 27 lb./sq. ft. 24,650 lb. 18,7501b. (2.320 gal.) 1,600 lb. 40,500 lb. 200 m.p.h. at 5,500 ft. 165 m.p.h. 68 m.p.h. 20,000 ft. (absolute) 3,100 miles (at 165 m.p.h.) 95C ft./min. Four Bristol Pegasus Xc.s. 28.7 litres. 740 h.p. (total 2,960 h.p.) 2,250 r.p.m. 3,500 ft. 910 h.p. (total 3,640 h.p.) 1,015 lb. 13.7 lb./h.p. Meanwhile, as a start in the survey of the southern route. Cambria, the second long-range Short boat, flew on Tue? day of last week to Lisbon in order to investigate the facilities there. Lisbon is the jumping-off point lor the Azores-Bermuda-New York route, THE SIKORSKY Although in this country we have seen at least one of the older Sikorsky amphibians, the arrival of Clipper III provided technicians Over here with their first chance of examining the latest American boat to be put in service. In basic design the S.42B is now several years old, and one can hardly make a fair comparison against the Short Empire type.
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