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Aviation History
1931
1931 - 1316.PDF
FLIGHT, DECEMBER 18, 1931 All engine mountings are ofwelded steel tube construction, and engine cowls and petrol tanksare of electron. The undercarriage is of widetrack, and of the " split " type, each half consisting of a singlewheel 800 X 150 fitted with Benclix brakes, and mounted onthe usual tripod of axle, radius rod and compression strut. Thecompression struts do not run to the wing but to the front wingbracing struts, from which point a short strut is taken diagonallyto the side of the fuselage, there to be anchored to a stout bulk-head in the plane of the front spa*. A tail wheel is used insteadof a skid. Sg thenp0otbithe SIDE VIEW OF SABCA-S.XII: The vertical tail surfaces are placed aft of the elevators are horn-balanced. horizontal tail. while rudder and fin are placed aft of the horizontal tail to give them greater leverage scale type, and the instrument board has been arranged and also to avoid " blanketing " of the rudder and fin to make a survey of all the different dials as easy asat large angles of incidence. Like the elevators, the rudder is horn-balanced, and the rudder chord is large atthe bottom. The ailerons, it will be seen, extend over the wholewing span. The inner portions can be operated by the pilot to act as variable camber gear, leaving the outerportions to perform the function as ailerons. Two seats are provided in the cockpit, although possible.Normally it is intended that the machine should have a range at cruising speed of 600 km. (370 miles), andthe load is then divided up as follows: Tare weight, 2 014 kg. (4,430 lb.) ; fuel and oil, 270 kg. (594 lb.) ; crew ofone, 80 kg. (176 lb.) ; pay load, 4 passengers and freight 500 kg. (1,100 lb.) ; gross weight, 2 864 kg. (6,300 lb.). The wing span is 18.10 m. (59 ft. 5 in.), and the wing normally it is intended that one pilot should suffice. The area 43 sq. m. (463 sq. ft.), which gives a wing loadingcabin has seats for four passengers, with plenty of room for them to get in and out without getting in eachother's wav. Manv of the instruments are of the vertical of 13.6 lb./sq. ft. The power loading (based on 3 X 120b.h.p.) is 17.5 lb./h.p. Official performance figures are notvet available. THE SABCA-S.XII: The Renard outboard engines are placed close under the wings. Air Mail Postage to South America IT was stated in the House of Commons on December11 that it was possible to send an air mail letter of 5 grammes (about one-sixth of an ounce) to South Americafrom certain European countries at an initial cost of Is. 6d., whereas the minimum charge from this country was3s. 6d. for half an ounce. The Postmaster-General com- mented that it was cheaper to send a letter of half anounce from this country than from any other to South America. He held that the remedy for the high initialfees lay, not in a reduction of the unit of weight, but in a reduction of the very high charge for transport on thatservice, which is ten times greater than that on the Indian air service. Owing to the fact that payment was made tothe Flench postal authorities in gold francs, the service was now being run at a heavy loss, and he was not preparedto take any steps which would increase that loss. Australian Xmas Air Mail AT the eleventh hour the weather has been unkind toAir Commodore Kingsford Smith, who has been making a magnificent dash in the Avro 10 Southern Star from Aus-tralia to England with the Xmas air mail " rescued " from the Southern Star which crashed at Alor Star.Having reached Karachi on December 8—the sixth day out from Australia—he made the following rapid progressover the latter stages—December 9 Bushire, December 10 Aleppo, December 11 Athens, December 12 Rome, Decem-ber 13 Lyons. It would seem that the " 13th " was unlucky, for on the following day, owing to fog, he wasunable to complete, as scheduled, the final stage to Croydon, where an official reception awaited him. Again,on December 15 he could only get as far as Le Bourget, and at the time of writing was expected to reach Croydonat last on December 16. The Postmaster-General announces that the SouthernStar is due to leave Croydon for Australia on December 18. Correspondence for Australia, the Straits Settlements andMalay States (and for New Zealand by ordinary route from Australia) will be accepted for despatch at sender's risk.Correspondence for other countries on the route will not be accepted. The inclusive charges (combined postage andair fee) will be Is. 4d. per half ounce for Australia and New Zealand and Is. per half ounce for the Straits Settle-ments and Malay States. Suspension of Air MailsTHE Postmaster-General announces that, owing to the suspension of the air mail service between Bucarest andIstanbul, air mail letters for Turkey now gain no appre- ciable advantage over letters sent by the ordinary service.Also, owing to the suspension of flying between Moscow and Irkutsk and Manchouli and Shanghai, the air mailservice from this country to China now offers no appreciable acceleration over the ordinary service. 1238
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