grafspee

@Bozon this is whole page https://enginehistory.org/Propellers/HamStd/hamstd.shtml What i showed is only when feather button is pushed, from description, it seems that feathering circuit is cut out when governor is working and vice versa. Oil for feathering pump is supplied form main engine oil reservoir so if this one get empty no feathering will be possible, but engine seizure will not prevent prop from feathering, only direct damage to prop governing or feathering system.

Looks like feathering has it's own oil pump so it should be possible to do if engine seized, but single damage to prop governor oil lines will make it impossible or damage to governor cylinder will make it unable to feather too, too many fragile things which are necessary to feather. https://www.enginehistory.org/Propellers/HamStd/hsf.shtml

So your prop wasn't feathered, if you got combat damage feathering mechanism could be damaged or prop it self could be damage and pitch mechanism could be jammed.

Still WIP as far as i know.

Remove outer guns save 170kg and get increased power ratings that would be a game changer.

K4 use was limited during ww2 and k4 with gun pods looks even less likely to happen, this is my view on this topic.

I think Erhöhte Notleistung in case A-8 is increased boost from 1.42 to 1.58 for low and 1.65 high blower and has nothing common with c3 injection. And this wasn't announced by ED i think, so yes F-8 should get this c3 injection but this is only allowed for low blower, i may be wrong here but this is how i understand that.

God idea, all 4 20mm are useful against bombers, dismounting 2 outer 20m would strip something like 200kg, probably improving roll rate at the same time, at least roll rate acceleration.

Testing conditions of P-47-D30 during NACA flight tests, this test were performed to determine longitudinal characteristic of the plane, any way they did dives at 15" and 2550rpm to speeds above 300mph and high and low alt. They did glide test to speeds up to 400mph indicated but not prop rpm setting mentioned in test table conditions. I assume that test were done with useful engine limits, so they actual did not kill engine every time when they did the tests, i think it would be pointless to test plane in that conditions.

If it can hold max power for 1 continous minute on the ground it will hold on at slow speed to. Unless it become more realistic then real plane.

No one need or want to do full engine run up on the ground, but this is only foothold which we can relay on, in slow speeding overheat problem, like stall turns etc.

Would be nice, since some planes do not have dedicated hand brakes like spitfire, k-4 and both fw190.

99% not locked primer.

If you select both they sync only if DCS detect axis movement, this may occur right away, when hardware axis has some instability or later when you touch your controller and induce minor axis movement, this is why you fell that sync happens from time to time, so only way is to leave one rpm lever selected if you don't want to sync happen. In my case both levers sync immediately after i switch to "both" mode.

Exactly and fact that now no one fly wep is no proof that in war time they did not too.

Yes they run up engine full power in case spark plug fouling and they blow engine in 30sec. So they get new engine and sparks are cleared. I start to understand this. Did i say that i used actve pause, no i did not. But i managed to get 45' and engine blows up too, so i get new sparks when i reslot. Got it.

You still focusing on wrong thing, i dont care about plugs. Engine overheats too fast. And proof is in p51 manual and i dont care how modern p51 are operated, you said that many times that dcs models ww2 era p51. So when manual says thar full power runup is possible it is and thinking about why you want or dont want to do id does not change a thing. And if you ever try p51 in dcs on the ground you would know that 3000 is avilable at 43', 33' wont give 3000. I do agree that many things are not modeled or modeled wrong

P-51 manual says why you would open on the ground. You do not need 61' in DCS you can go for 40' and engine will cook. So they don't tell to hold throttle full at stall or fly in to mountain but they tell you that 1 min run up at 61" in order to clean engine is necessary after long ground operations and your reaction is to nah we just skip this nothing of importance for us. We can't strap tail to the ground and you advice to not use active pause, but you know it very well that if that option was in DCS result would be exact the same, anyway 40' will cook engine before 1min mark too, not need to go for 61 to proof that this is wrong. Anyway im done here.

Exactly opening radiator shutters only gives couple second buffer, but it does not change overall cooling, because Auto mode open cooling shutters full when needed, what DCS P-51 miss is properly working cooling system. And small correction you blow motor in 30s not radiator, radiator will survive, it has emergency release valve which opens when coolant pressure exceed certain level which corresponds to temp higher then 121C, from this point valve will vent coolant to prevent radiator damage. Your video is perfect, it shows that modeling is way off. After 15 sec of max power, coolant temp is red lined, provided that you started up with 60C it would be much less when starting from operating temp.

So run 40 inch it will still overheat before 1 min mark

Straight from P-51D manual, good luck doing that in DCS haha. Cooling in DCS is broken, when taking off P-51 barely goes off with out overheating, just imagine sits stationary for whole 1 min with throttle wide open. They forgot to add in to manual, to have fire track ready so after spark plugs clean out, they can cool down molten engine. This mean that at 100mph you definitely can have throttle wide open for more then 1 min if it is possible to run engine 1 min stationary wide open.

Can you point me where is this in p51 manual? I mean real manual not DCS manual. In dcs i know that i must be super cacious about temp.

@Doughguy @Reflected so you clearly don't watch temp gauge then, set ambient temp at 20-25 C put some rockets and try to take off with auto cooling on and watch temp gauge. And 4 5 6 s more will change a world in P-51 case.

Exactly they do, but in DCS you will still cook engine on the ground at power way below max. Do cooling shutter can not keep up with temp change yes, take off at auto cooling mode will make your engine overheat. If ED modeled sctuation speed right, then cooling model is not right.

Let'a talk about something more trivial, like take off. Just set 20-25C which is not super hot anyway, and try to take off, apparently in DCS you have to use 2700rpm and 40" to not over heat because if i use 3000rpm even 50" won't prevent plane to overheat so yes cooling efficiency is below the real one. P-51 manual states clearly that manual mode for radiator is used only when auto fails if you leave cooling in Auto mode in DCS you just cook engine at take off. @Reflectedyeah full engine run up was done by crew regular.