Wallis and test pilot “Mutt” Summers used a modified twin-engined Vickers Wellington bomber to prove his theory using a spherical version of his “bouncing bomb.” (Historynet Archives)
Dambusters Wellington
Wallis and test pilot “Mutt” Summers used a modified twin-engined Vickers Wellington bomber to prove his theory using a spherical version of his “bouncing bomb.” (Historynet Archives)