Long development times are not unique to modern combat aircraft. The Swordfish can be tied to specifications issued in 1931 and 1933, yet its design ancestry reaches through earlier torpedo aircraft to the Sopwith Cuckoo. Each type adapted ideas and solutions from its predecessors rather than starting from a blank page. A headline date for a specification therefore captures only part of an aircraft's gestation. The comparison cautions against treating modern projects as unusually slow without counting the development embodied in earlier generations.
Notable Point · 1:27:31-1:28:43
Why aircraft development rarely begins with one specification
The Swordfish's ancestry back to the Sopwith Cuckoo shows why a single specification date can understate an aircraft's real development time.