Have anyone thinked about the tehcnology differense what we are having here?
What I'm meaning with this is that in 1940s they where just learning what happens near sonic speeds.
oh look we are losing power because prop is going too fast, maybe we should build bigger one may that gives as more power at the same rpm oh noes its start to lose power at lower rpm than the last one!
Also they did not have many other things what they now about aviation today. I really doubt that they could have calculated every thing in 100% accuracy (how many died because near sonic speed jammed lightnings controls?)
Even the engines where little bit different. For example we have synthetic oils what they did not have back at the days.
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I had one more point about the pitch twingling thing in my mind when i remembered all those 2-stroke engines is busted years back.
I burned hole in couple of piston because i drove too "fast" for the engine to cool down. After second engine, I learned when i was driving straight long road and having accelerated to the max i needed to relax the throttle for a couple of moment and accelerate again. This acceleration deceleration cycle gave much better average speed than what speed would have been with the highest possible rpm for not overheating the engine.
What if they did the same with bf109?
Little bit Overrev/overboost which give spike in the temperature and little cool down to minimize the damage? ---> Or maybe they just they had boost and revs to add but cooling could not handle it all and they used that power reserve in short periods not giving enought time for sudden engine failure or over heating?
Quote:
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To move between .88 and .92 mach usually takes a change of about 110 to 120 RPM.
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If plane would go 400km/h at sea level with prop hitting .88 mach in 2400 rpm would it give even 5km/h hour if pushing rpm to 2500rpm? if the rise would be linear it would be 16km/h
What if they suffling the pitch near this area giving more revs untill engine would start to noise up at .93 mach (believing it would be near braking point) lowering it to near .88 mach then pushing it up untill the noise would go up etc. They just did not know it that day what they where doing.
Aw man... Sorry about huge 'what if' post... And sorry if you just lost 5 minutes of your life with it... Amateur speaking.