Unsynchronised beat of Luftwaffe engines
During the war I was conscious of the noise of massed German bombers passing over my village in Kent towards London during the blitz.
Their engines gave a monotonous and frightening uneven beat. As a pilot now, I realise that was the sound of unsynchronised engines. My question is this:
Was the unsyncronised engine noise quite a normal expectation given that there were so many aircraft?
Or was it deliberately done (by setting unequal rpm) to frighten the populace? I feel that the former was the most likely explanation.