Present‐day speeds are such that the girder main plain has fallen into desuetude, except for a few light training aeroplanes. There are only two examples which can be considered to fall within the category of really modern aeroplanes: the Hawker Hurricane and the Gregor FDB‐1.
(1941), "The Jigging of Modern Airframes: A Review of Some of the Methods used by British and Foreign Manufacturers", Aircraft Engineering and Aerospace Technology, Vol. 13 No. 5, pp. 139-144. https://doi.org/10.1108/eb030775
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