Both aircraft could carry torpedoes, bombs, and machine guns, but the PL.2 was substantially longer and somewhat larger than the Dart. Its more powerful French engine produced a higher maximum speed and slightly greater range, although its service ceiling was lower. Those differences show adaptation to French needs rather than direct copying. Blackburn's production of roughly 126 Darts generated a pool of aerodynamic and operational data that an eleven-aircraft French run could never match. Levasseur gained proven research, while Blackburn could see ideas tested on a small scale at French expense.
Notable Point · 10:29-15:14
PL.2 performance and the value of Blackburn data
A comparison with the Blackburn Dart shows how Levasseur traded greater size and lower ceiling for speed and range while drawing on a much larger British data pool.