Myasishchev DBV-102

A Soviet long-range high-altitude bomber. To avoid exposing the airframe's vulnerabilities, it was required to have high-altitude performance, so it was equipped with a pressurized cabin. During tests in 1942, engine troubles led to repeated swaps and ongoing testing, but it lost its raison d'être as development advanced on a new four-engine heavy bomber.

The Focke-Wulf Ta 400 was a large six-engined heavy bomber design developed in Nazi Germany in 1943 by Focke-Wulf as a serious contender for the Amerika bomber project.