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grafspee

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  1. grafspee
    Limited to 10min at a time does not mean that engine will blow up right away. It is very hard to determine how long engine can run with mw50 but i think it is safe to assume that engine will survive whole tank of mw50, if temps stay with in limits. Definitely it would have impact on service time of the engine. Much easier is when engine blows up faster in DCS then it was rated for in RL manuals, the task is easier you can show proof and ED can reconsider modeling approach. But when we are talking about high power endurance things get complicated. Engine could run 40min with mw50 and blows up and engine could withstand couple hours as well and providing proof for this is nearly Impossible. Timie limitation is no near point when engine would fail, from simple reason, this would require ridiculous precision in engine production to have every single engine fail exactly after 15min or 30min or what ever time was determined by factory. So games where engines fails right after time limits exceeded are just pile of garbage in that regard.
  2. grafspee
    @Magic Zach I think he is saying that there is equal chance that drag will decrease, increase or stay the same.
  3. grafspee
    Shame that non of ED stuff commented on this topic so far, at least from my knowledge.
  4. grafspee
    No data available but at least in p51 case canopy when opened is elevated up, so it is obvious that drag will be higher. Another case would be when canopy is jettisoned.
  5. grafspee
    @Ala13_ManOWar At first you are saying that damage at higher speeds do not affect plane only at low speed. Now you are saying that the smallest damage is noticeable. What is the smallest damage for you then?
  6. grafspee
    That exactly what i am talking about, in DCS one wing damaged won't make any difference at all and this is exact case what you described that ice from one wing just randomly goes off and you are in spin. This is exactly what i have in mind. You are in high G turn and you got your one wing punctured by single 20mm, since you are at edge of envelop, this slight lift reduction on damaged wing, will launch you straight in to spin, it is subtle but, you were on the edge.
  7. grafspee
    @OLD CROW I'm not saying that couple holes in wing would down plane, im saying that this would impact how plane fly. As you show on video plane was extremely hard to control when you lost part of the wing and it is harder and harder when speed drops down. But this works like binary system in DCS if your wing is ripped by bullets it should at least make tendency to stall earlier in high G turn, it is subtle difference but it is. Wing even with 1% surface removed just can not perform exactly same as brand new wing.
  8. grafspee
    @Ala13_ManOWar It is symmetric because all plane get ice even. And ice deposit build up in time so it camouflage icing impact on plane even more. Couple 20mm rounds in single wing in the instant will noticeable affect how plane flies at all speeds iced wings will affect how plane flies at all speed to, because higher stall speed will reduce achievable G. Have you seen single hit from 30mm and you still saying that single hit doesn't matter ? Better you listen to yourself. How many time things were prooved wrong here.
  9. grafspee
    @Ala13_ManOWar Ice deposit on edges is symmetrical that is why plane trim isn't affected as much. But holes from bullets aren't. Ice symmetric deposit make whole thing dangerous because it is even everywhere if only one wing would get iced you would notice immediately that iced wind start to drop due to lowered lift, so even ice deposit makes stall speed higher and if unaware pilot will slow down to normal landing speed it will stall the plane. So when plane get exact damage to left and right wing trim won't be affected but definitely higher stall speed should be observed ofc dependent on how serious damage is.
  10. grafspee
    Yeah why not, if wing is damaged enough air flow will rip wing cover easily, in addition to that deformation of the wing cover may happen. I don't think that any of that won't make difference like obsoletely no impact, i experienced it too, my plane was ripped apart by AAA engine was dead, big holes all over my plane and still no change how it fly beside cockpit shake, managed to put it down on the grass. Thing is now that your plane can eat thousands of bullets and it will do nothing if those bullets won't hit any vital parts. And this happens quite often when plane get pounded really hard and keep flying and flying.
  11. grafspee
    I don't expect that single hole should be noticeable, but after getting some punishments plane can not fly as bran new, some re trimming should be required and minor top speed impact should be noticeable. And OP is talking about badly damaged surface of the wing from flak fire having absolutely no effect on how plane fly. I agree that couple holes even 20 or 30 holes wont hur much but wing which surface is reduced 20% or so should definitely change something. Lift comes from pressure difference when you have big hole in wing some pressure leak is present so at least some minor touch on trim should be required
  12. grafspee
    Only case when plane will fly different is when you get your ailerons elevator or rudder shot off or linkages are jammed or cut off if those aren't damaged plane fly as brand new no matter how many bullets go through wings or fuselage. I didn't mention case when you loose tail or wing or both because this is rather obvious that plane will drop on the ground but i have heard that some managed to land with out the wing but i think this was just visual bug.
  13. grafspee
    Plane loses control at landing is case where flaps aren't deploying properly, for example only one flap works. But if there is any damage to wing i mean large area of fabric is destroyed it will affect plane at every speed not only at low speed. In DCS those damages aren't modeled.
  14. grafspee
    Even if you have faster acceleration in dive you will never get separation as big as you wish unless some ww1 fighter is pursuing you. If you diving you will have to pull out eventually and if guy is far from you he can just cut the corner and he will gain on you. If you have enemy fighter on your six you lost mate if you are alone. Ai does not make mistakes unfortunately. P-47 actually has superior flaps and if you utilize them you can out turn K-4
  15. grafspee
    Higher drag will induce yaw deviation which should make plane to roll a little bit, but mian thing which plays role here is reduced lift and this can make plane uncontrollable when lift difference will overcome aileron compensation. So yes plane with big holes in wing should be harder to control, when you can let go stick and plane flies straight, i see things that way. The damage is minor and holes are just graphical bug or FM does not account for that.
  16. grafspee
    Those razorbacks are actually faster, so not only art design would be involved in making those.
  17. grafspee
    Spitfire's engine is equipped with with injection type carb and mixture control is 100% automatic, so there is only cut off and RUN/AUTO position, AUTO will adjust mixture according to engine power settings so when cruising carb will lean out mixture so engine will burn less fuel and it will rich mixture if power setting increase this is step above, from cut off / lean / rich mixture control. In that type of injection carb if you have fuel pressure in the system and you move mixture lever from cut off to AUTO, carb will start injecting fuel regardless if engine is cranking or not. If engine is not cranking fuel will simply pour out on the ground making high fire risk. If you switch fuel pump on and move mixture lever forward it will blow fuel on the ground because engine is not inducting. So you have 2 ways of starting up spitfire. You can start with mixture set to cut off or AUTO. If you want to start with mixture lever in AUTO fuel pump must be off, if you start engine with mixture lever in cut off you can switch fuel pump on but as you hit starter you need to move mixture forward. At cold start engine won't start with out priming not because carb can't provide fuel, this carb will provide fuel with no problem, but low temp makes fuel evaporation very slow and only evaporated fuel burns addition to this carb is placed very far from engine intake manifolds. So you need additional fuel so engine can catch up faster.
  18. grafspee
    So only thing left is CFD done by ED to determine exact numbers then. My guts were telling me the same thing, that high speed tests with canopy open/close does not exist, and at slow speed, like landings or takes off makes no difference.
  19. grafspee
    Rather obvious, but how much?
  20. grafspee
    Do anyone has speed trials with canopy open/close ?
  21. grafspee
    Switch on fuel pump after take off and all problems will be gone
  22. grafspee
    I don't get it, why those settings are tagged on as default if they don't even work. There are many useless options checked on as default in DCS.
  23. grafspee
    @303_Kermit Engine in P-47 overspeed very easy in high alt high speed dives. Setting lower engine rpm changes nothing in that regard. And if you overspeed engine to 2900 for a short time, engine will die soon
  24. grafspee
    Agree, i tested it lots of times, in DCS P-47 does not loose elevator control in high speed dives. I did drop from 40k and going straight down i didn't loose control in that dive. Only thing what i achieved was deadly engine over speed.
  25. grafspee
    Model 1 was prototype only production models are -3 and -5, all restored airworthy examples are only -3 and -5
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