Historically the He177 had serious problems with its engines and they waited until August 1943 to order a four nacelle version, which took until December 1943 to enter testing. If ordered on January 1st 1941 how long would it have taken to redesign and build a 4 nacelle He177 for testing? And...
May you help? Thank you, I am searching for a manual of control surfaces where are well described and pictured the Fowler ailerons of He177 A-3, really hard to understand in detail...
In change I can help you about Italian Aircraft manuals.
Ciao
Felix