While it was posted in another thread, it seems as if it should be here, as it discusses load-factors in German Aircraft designs: The He 177's maximum g-load was listed as 4.0g in Manfred Griehl & Joachim Dressel's
Heinkel He 177/277/274, on aircraft with strengthened wings (A-3/A-5?). Assuming that's not the ultimate-rated load-factor: That would produce an ultimate load-factor of 7.2g, with a safety factor of 1.8 (as was custom for the Germans). If correct, that would correlate to a normal-rated load-factor in US/UK terms of 4.8g, and this would apply (far as I know) at a weight of 27000 kg (59525 lbs).
This would produce a remarkably rugged airframe compared to most all the heavy bombers used by the UK & USA: The ultimate load-factors, as listed for the Lancaster & Halifax were 4.5g ultimate (3g normal-rated); the B-17C was 4.2g (2.8); the Shorts Stirling & B-24D were 4.0g (2.67g) at listed design weights that were pretty much the gross weight. With the He 177A-3 & A-5 weighing in at 31000-34000 kg (63433-74957 lbs) at MTOW, this would result in an estimated load factor of 5.72-6.27g.
Other than the Mosquito and Beaufort, there weren't many bombers that could pull higher g-loads than this design.
In an attempt to find data on the Ju 88, I've been
reduced to trying to find data from video games -- something I'm extremely reluctant to do (DCS World and BMS might be exceptions because of the dedication to detail), but IL2's the only data-source I got and, while I've heard different figures regarding accuracy: It might be a start, if for no other reason than it could get a discussion going, and (provided I don't get decapitated by the moderators) such discussions often lead to a variety of links and sources, that provide factual data (and that's my goal).
That said, I do have deep skepticism of an ultimate load-factor of 8g: That said, the Mosquito could pull similar loads (that said, not every light/medium could do that), and it was used as a heavy fighter (though, it was said to take significant losses to Beaufighters).
D
Dawncaster
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GrauGeist
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Marcel