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Aviation History
1931
1931 - 0607.PDF
FLIGHT, JUNE 19, 1931 D.2000 JUNKERS G.38 VISITS - CROYDON FRIDAY of last week afforded an ex-cellent opportunity of comparingthe appearance (if nothing else) oftwo recent " giant air liners," for on that day the largest German landplane,the Junkers G.38, paid a visit to the London Terminal Aerodrome, while thefirst of the Handley Page " Hannibals " was being flown by various Imperial Air-ways pilots. It so happened (we use the word advisedly) that both machines werein the air together, and thus it was possible to get a very good idea of the " styles " ofthe two types. It is not known what load each machinewas carrying at the time, and so one should be wary ofmaking deductions, but by way of recording a general im-pression it may be said that the " Hannibal " appeared un-doubtedly to have the better take-off and climb, while theG.38 seemed to be the faster of the two. The German machinehas been given the registration letters D.2000, and one ofthese days some wag will doubtless paint a letter "A" infront of the " D." The G.38 does certainly rather look likea peep into the future, but possibly opinions may bedivided as to whether the " Hannibal " does, as one on- OVERHEAD: This view gives a very good idea ofthe plan form of the Junkers G.38. (FLIGHT Photo.) THE BUSINESS END OF D. 2000: The two inner engines of theJunkers G.38 are Junkers L.88 of 800 h.p. each, while the two other engines are Junkers L.8, of 350 h.p. each. (FLIGHT Photo.) looker on Friday put it, repre-sent a peep into the past. The Junkers G.38 hasalready been described and illustrated in FLIGHT (see issueof November 29, 1929), while illustrated articles on the"Hannibal" were published in our issues of November 21 and28, 1930. Thus both types will be known, at any rate in ageneral way, to readers of FLIGHT. The Junkers G.38 is a canti-lever monoplane of all-metal construction, fitted with fourJunkers engines, of which the two engines nearest the fuse-lage are of the L.88 type, de- veloping 800 h.p. each. Thetwo outboard engines are of the Junkers L.8 type, anddevelop 350 h.p. each, so that the total normal power of the G.38 is2,300 h.p. The gross weight of the machine is 21 metric tons (46,200 lb.) andthe tare weight is, we are informed, 14£ metric tons (31,900 lb.). The disposableload of the G.38 is thus 14,300 1b. This can, of course, be apportioned in almostany desired ratio between pay load and fuel and oil (or, in other words, range).The ratio gross weight to tare weight is 1.45, which must be regarded as a verygood figure indeed for a machine of this type, showing, as it does, that the machinewill carry 45 per cent, of its tare weight as disposable load. The main dimensions of the G.38 are:Length, 23 m. (75 ft. 5 in.) ; wing span, 45 m. (147 ft. 7 in.); wing area, 290 sq. m.(3,120 sq. ft.). At a gross weight of 46,200 1b. the wing loading is thus14.8 lb./sq. ft. and the power loading 20.11b./h.p. The cruising speed is believedto be about 110 m.p.h. By way of comparison it may be re-called that the Handley Page '' Hannibal'' has an overall length of 86 ft. 6 in., a topNCV DPrnDiTnm r,,, , . . ., c , T • ^ ,o J .. plane wing span of 130 ft. and a total«° tK S? f uVE ' V" b?PlanVal1 of the Junkerf G.38 does not add £ ing area Sf 3 000 sq. ft. The gross weight^•nfTlL 't',1?3*"1'' ^ a large-span monoplane tad b«hmd four of the •'Hannibal" is about 29,500 lb.fc-nes would probably have had an unhappy time of it. (FLIGHT Photo.) (this figure refers to the "Western" 561
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