A blog reader provided this scan. It comes from the archive of the Imperial War Museum, and was all alone in its folder… what you see is all there is. It appears to show a rocket powered “rammer,” with a massive armored nose for slamming into enemy bombers. The pilot is provided with an easy-bailout ramp, presumably to be used after aiming his plane at a target but before impact (I would *not* want to be in at thing when the actual ramming occurs). Presumably dates to WWII. The style of drawing looks like a patent drawing. My guess is that it was a patent submitted by Just Some Schmoe during the war, and is not a serious concept by a reputable design firm, but I don’t know for sure. If anyone has firm data, please advise.