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Quite common for low level recon aircraft to get one engine shot out. What happens to Bv141 under those circumstance? Would it even be controllable?
Would the GR 14M radials or Isotta Fraschini Delta be close enough to the As 410/411 in size/weight to be fitted to the Fw 189 without unreasonably complicated modification to the airframe? That might have been a more promising than the BV 141. (placing the cockpit module on the main fuselage and engines on a pod on a BV-141-like aircraft might have been more interesting too, allowing smaller/less powerful engines in a push-pull arrangement for similar combined performance to the 801 but no toque and potential single engine-out flight capability)
There may be a problem getting either engine. the workers/management at G-R walked a fine line between obstructing production and getting reprisals from the Gremans, one account claims actual production was about 25% of what the Germans planned/hoped for. Some of the German planes powered by G-R engines were powered by engines pulled from existing French aircraft as they were scrapped (or partially scrapped) so that supply does have it's limits.
Isotta Fraschini may have had a multitude of designs but I don't believe any of them were ever manufactured in large quantities (by the hundreds per month instead of by the dozens) so their ability to supply a major program might be doubtful.
Wiki says 3300 of the Delta were built but it was first run in 1927(?) and it was being offered post war with a 2 speed supercharger drive so the numbers made in any one year might not be great. It also powered the Caproni 313/314 with around 670-680 built (two engines each) so that sucked up a fair amount of production (you also need 30-50% extra spare engines and if you overhaul/rebuild program isn't good you need even more).
More executions of workers?
Sort of joking but that was the situation. The French work force was obstructing-slowing production as much as possible without provoking retaliation. Asking workers of conquered countries to perform at 100-110% to produce weapons to conquer more countries is probably asking a bit much.
Expanding the hypothetical range here: would it have made any sense (especially pre-war or very early war) for a license of the Delta to be secured by Argus or Hirth? (possibly with continued development from said German firm) Hirth possibly more so given the trouble they seemed to have with the HM.512. Then again, there's the Czech engine production as well with Sagitta. (though those engines had merits over the AS-410 as well and interesting in their own right)Wiki says 3300 of the Delta were built but it was first run in 1927(?) and it was being offered post war with a 2 speed supercharger drive so the numbers made in any one year might not be great. It also powered the Caproni 313/314 with around 670-680 built (two engines each) so that sucked up a fair amount of production (you also need 30-50% extra spare engines and if you overhaul/rebuild program isn't good you need even more).