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Aviation History
1920
1920 - 1270.PDF
an English than a German aeroplane. The top plane centresection is carried, not on a cabane as is usual German practice, but on outwardly raked struts of sheet metal, designed togive sufficient rigidity without wire bracing, thus leaving the space between the centre section and the top of the fuselagefree of obstructions. One might wonder why such a machine was not turned out in quantities, as it certainly appearsto be far ahead of any contemporaneous German aeroplane familiar at the front at that time. The explanation is thatthe metal construction was so heavy as to reduce the per- formance, which failed, we understand, to come up to the DECEMBER 16, 1920, required standard of climb. A small general arrangementdrawing of the Do. C. I, or Zep. C.L. I as it isisometimes called, i» published herewith. Also the climb recorded on a testflight on March r8, 1918. It will be seen that an altitude of just under 5,000 metres (16,500 ft.) was reached in one hour.The time allowed for this class of machine is 45 minutes, so that the Zep. C.L. I fell short of the requirements by 15minutes. Up to an altitude of 4,000 metres it was almost up to requirements, but the last 1,000 metres, instead of occupy-ing 16 minutes, took half-an-hour. It is thought that the following tables of weights, etc. of the C.L.I, may be of interest: The Do.C.I:This ma- chine wasthe first to employsmooth metalcovering of the fuselagewithout internalbracing. i '. C.L.I. I6O hP MERCEDES LENGTH 2-a - •»" &PA/V UPftK 3d - 7" " LOWER *9 - 7" APEA UPPER 164 S^. FT LOWER 125 SQ n TOTAL 27g SQ FT THE DO. C.I OR ZEPPELIN C.L.I : Plan, side and front elevations to scale. D/A1. /A/ AIM. THE DO. C.I: Sections, etc., of the metal spars. .-t -^
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