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Testing the girder-built body of an aircraft

Testing the girder-built body of an aircraft.jpg A pylon, or mark-tower, on the flying trackThumbnailsHull of a Zeppelin during constructionA pylon, or mark-tower, on the flying trackThumbnailsHull of a Zeppelin during constructionA pylon, or mark-tower, on the flying trackThumbnailsHull of a Zeppelin during constructionA pylon, or mark-tower, on the flying trackThumbnailsHull of a Zeppelin during constructionA pylon, or mark-tower, on the flying trackThumbnailsHull of a Zeppelin during construction

Put together scientifically and from sections of wood specially tested, a remarkable strength may be obtained by such a method of building. The figure shows how a girder aircraft body, supported by trestles only at its ends, may support from its centre, without yielding, a tray containing a number of heavy weights