The need has promoted an unlikely combination during WW2, a small plane and a heavyweight pump. We are talking of dH Mosquito and blockbuster bombs used by the Royal Air Force. The link below provides an interesting collection of photos, some of which I had never seen before, this unusual combination.
http://aviacaoemfloripa.blogspot.com.br/2011/02/mosquitos-e-as-bombas-de-4000-libras.html
Best Regards,
Stephan
