Wellington Attack by David Pritchard. (B) SIG1543 vibration from a fuel pump

vibration from a fuel pump at the resonant frequency of the human eyeball caused the pilot to throttle back one engine to avoid momentary loss of vision

On January 21st 1941

when his aircraft hit a tree

When De Havilland built the prototype DH

Wellington Attack by David Pritchard. (B) SIG1543 vibration from a fuel pumpPR0035B. Wellington Attack by David Pritchard. On the night of 12th 13th August 1941 No. 9 Squadron, in their Wellington Bombers, are once again taking the war into the heartland of Nazi Germany, WS G Skipper Flt Lt Kenneth Ball fights to keep her straight and level through the intense flack that surrounds the target, while his front gunner Sgt Cyril Chandler tries in vain to take on the menace of the search lights that seek their Wellington. Both