I've repeated my post from another thread here because I'd like to hear other people's views. I also think it is a subject worth exploring on it's own. I previously wrote:
The He-177 V38 aircraft and two sisters were completed at Ruysne near Praugue in 1942 as nuclear capable bombers. They had especially elongated bomb bays which interestingly would have accomodated the bomb dropped on Hiroshima too.
By late 1944 the He-177 could not overfly Britain because of that country's air supremacy.
The Ju-287 V1 jet bomber however was test flown from October 1944. It had the nose and mid section of an He-177 grafted to the tail of a Ju-388. It was a very hasty modicication and not intended for serial production either.
It was vastly different to the Ju-287 V2/V3 or EF132 which became the Soviet Tu-16.
The Ju-287 V1 hoever was also distinguished by the fact it had a bomb bay identical to V-38's bomb bay. Indeed it may have been built from one of He-177 V38's two sister aircraft at Ruysne.
Ju 287 X-Plane aircraft by RTT Uwe Reitter
The significance of this is clear. V38 and her two sister He-177s were always intended to carry the Nazi A-bomb. In 1944-45 an He-177 could not survive over Britain but the jet powered Ju-287 could, was fast enough, had the range and importantly could carry a very heavy bombload.