Good Morning,
More on "flaming onions" form this site:
http://www.bbc.co.uk/ww2peopleswar/u...u1572628.shtml
quote from site:
"Also we were given to understand that the Germans had an ack ack shell which simulated an aircraft being hit, its object being to demoralise the bomber force. It was known among crews as a 'Flaming Onion'. After the war it was found that there was no such shell and what we saw was in fact aircraft being shot down. Of course in daylight there was no disguising a direct hit."