Anatoli-Kagari9 Posted October 22, 2012 Share Posted October 22, 2012 When you open the canopy inflight does it generate drag? Flight Simulation is the Virtual Materialization of a Dream... Link to comment Share on other sites More sharing options...
WildBillKelsoe Posted October 22, 2012 Share Posted October 22, 2012 I bet it does.. the body is enclosed, so, when you open canoppy, I think air is let inside to create a drag by aft windshield. I could be wrong though. Sobek/yoyo will be along shortly throwing some complicated equations to make the drool longer.. AWAITING ED NEW DAMAGE MODEL IMPLEMENTATION FOR WW2 BIRDS Fat T is above, thin T is below. Long T is faster, Short T is slower. Open triangle is AWACS, closed triangle is your own sensors. Double dash is friendly, Single dash is enemy. Circle is friendly. Strobe is jammer. Strobe to dash is under 35 km. HDD is 7 times range key. Radar to 160 km, IRST to 10 km. Stay low, but never slow. Link to comment Share on other sites More sharing options...
Anatoli-Kagari9 Posted October 22, 2012 Author Share Posted October 22, 2012 Ok, really looking fwd for their replies :-) Also, I am planning to buy my p-51 registration today. It will get installed on my current PC, but I soon will get a new one. Will it be possible to transfer the activation from one to the other? I believe I'll have to de-activate it here first in order to be able to activate on the new one (?) - sorry - I know this question does not belong to this forum ... Flight Simulation is the Virtual Materialization of a Dream... Link to comment Share on other sites More sharing options...
Druid_ Posted October 22, 2012 Share Posted October 22, 2012 Yes you can transfer or rather you de-activate then activate. see here http://www.digitalcombatsimulator.com/en/faq/activate/ i7-7700K : 16Gb DDR4 2800 Mhz : Asus Mobo : 2TB HDD : Intel 520 SSD 240gb : RTX 2080ti: Win10 64pro : Dx10 : TrackiR4 : TM Warthog : ASUS ROG SWIFT PG348Q Link to comment Share on other sites More sharing options...
sobek Posted October 22, 2012 Share Posted October 22, 2012 Sobek/yoyo will be along shortly throwing some complicated equations to make the drool longer.. Lol, sorry, no fluid dynamics, i only know a bit about kinematics. :) Good, fast, cheap. Choose any two. Come let's eat grandpa! Use punctuation, save lives! Link to comment Share on other sites More sharing options...
VIMANAMAN Posted October 22, 2012 Share Posted October 22, 2012 (edited) When you open the canopy inflight does it generate drag? Just a thought Jcomm - why not test fly it and let us know - it would be interesting for many. Set yourself up level / stable etc. trimmed to 'perfection', and open the canopy - like I said just a thought. Rgds V Edited October 22, 2012 by VIMANAMAN clarity Link to comment Share on other sites More sharing options...
Echo38 Posted October 23, 2012 Share Posted October 23, 2012 (edited) The amount of drag should be enormous, I would think. I recall that simply going from bare metal to one coat of paint could knock at least 10 MPH off of a P-38's top speed. Edited October 23, 2012 by Echo38 Link to comment Share on other sites More sharing options...
Anatoli-Kagari9 Posted October 23, 2012 Author Share Posted October 23, 2012 @Viamanaman: I do not own the p-51 yet. Have been closely following it's evolution and now that the final release version became available I believe I will end up buying it after all... I am not fond of the military side of flight, but since I am in the very 1st place someone who seeks for the most accurate flight dynamics, sometimes in my simmer life I have oppened exceptions and bought a few military flight simulators in the past. The last one, long ago, was the firts version of IL-2. Since this p-51 looks amazing from what I am able to read, I believe that details like this particulra one - drag from oppening the canopy inflight - are most certainly modelled, but I really would like to learn from the users :-) Any contribution appreciated ;-) Flight Simulation is the Virtual Materialization of a Dream... Link to comment Share on other sites More sharing options...
Razor5-1 Posted October 23, 2012 Share Posted October 23, 2012 It will create a very large amount of drag, It's the same as opening the window of your car. At low speed, below 60 KPH it has little effect but as speed increases the drag created goes up quickly. The same is true for opening the canopy in the P-51. But there is no speed that it won't have much effect, unlike the car because of higher speeds. By going at higher speeds the amount of drag created increases at a high rate. To sum up, it will create drag having it open at any speed, but the amount of drag created is dependent on the aircraft's speed, higher= more drag. Link to comment Share on other sites More sharing options...
cichlidfan Posted October 23, 2012 Share Posted October 23, 2012 To sum up, it will create drag having it open at any speed, but the amount of drag created is dependent on the aircraft's speed, higher= more drag. That falls into the 'of course' category. The question is whether it is modeled in the sim. ASUS ROG Maximus VIII Hero, i7-6700K, Noctua NH-D14 Cooler, Crucial 32GB DDR4 2133, Samsung 950 Pro NVMe 256GB, Samsung EVO 250GB & 500GB SSD, 2TB Caviar Black, Zotac GTX 1080 AMP! Extreme 8GB, Corsair HX1000i, Phillips BDM4065UC 40" 4k monitor, VX2258 TouchScreen, TIR 5 w/ProClip, TM Warthog, VKB Gladiator Pro, Saitek X56, et. al., MFG Crosswind Pedals #1199, VolairSim Pit, Rift CV1 :thumbup: Link to comment Share on other sites More sharing options...
Razor5-1 Posted October 23, 2012 Share Posted October 23, 2012 My bad, Simple test. Trim aircraft level,Start at 200 mph, set altitude, advance throttle to a given manifold pressure. count the time it takes to reach 250mph. Repeat the test with canopy open exact same parameters, if there is a difference in time then it is modeled. Do three test of each to be certain. Link to comment Share on other sites More sharing options...
Echo38 Posted October 23, 2012 Share Posted October 23, 2012 (edited) A simpler test is to simply fly trimmed straight and level at sea level, ball centered, at 46" & 2700 RPM. Once your speed is at the maximum it will go under those conditions, open the canopy and see what happens. If it does affect the speed, wait for the aircraft to settle into its new top speed, then jettison the canopy to see if the drag changes again. (It should change; not necessarily decreased, because of vortexes, but it should change.) Edited October 23, 2012 by Echo38 Link to comment Share on other sites More sharing options...
Anatoli-Kagari9 Posted October 23, 2012 Author Share Posted October 23, 2012 But... but... could some kind sould do the test for me :-) Puleeeeze? You see, I haven't bought the p-51 yet, and was really willing to know... Flight Simulation is the Virtual Materialization of a Dream... Link to comment Share on other sites More sharing options...
Echo38 Posted October 24, 2012 Share Posted October 24, 2012 Okay, I'll do it. Link to comment Share on other sites More sharing options...
Anatoli-Kagari9 Posted October 24, 2012 Author Share Posted October 24, 2012 Ah! Thank you Echo! Anyway, I believe it will probably not make a huge difference, unless the aircraft if flown in a sideslip... Flight Simulation is the Virtual Materialization of a Dream... Link to comment Share on other sites More sharing options...
willzah1313 Posted October 24, 2012 Share Posted October 24, 2012 Hi all been away on tour for a while and haven't been able to fly. Anyhoo just wanted to say I bet canopy drag isnt modeled simply because accurate modeling of a cavity would pretty much require a CFD type FM. They could fake it im sure with the current model, but since your canopy is supposed to stay closed at any speed they prob didn't think it was nessesary. Just guessing, but I have had it open and while I wasnt testing spec for that effect, there seemed to be none that I could tell. What would be cool is if you open it at speed wind sound gets deafening like it would Irl. Link to comment Share on other sites More sharing options...
ED Team Yo-Yo Posted October 24, 2012 ED Team Share Posted October 24, 2012 (edited) Hi all been away on tour for a while and haven't been able to fly. Anyhoo just wanted to say I bet canopy drag isnt modeled simply because accurate modeling of a cavity would pretty much require a CFD type FM. They could fake it im sure with the current model, but since your canopy is supposed to stay closed at any speed they prob didn't think it was nessesary. Just guessing, but I have had it open and while I wasnt testing spec for that effect, there seemed to be none that I could tell. What would be cool is if you open it at speed wind sound gets deafening like it would Irl. The coolest thing is that you can not open it at the significant speed. :) And, by the way, there is no need to use NASA-type computers to take the canopy in account. The drag is not so dramatic and the speed drop is known - thus the drag addition is known too. Like a payload. But in current version nothing is set for the open canopy :) and it has not drag yet... subject to add. Edited October 24, 2012 by Yo-Yo Ніщо так сильно не ранить мозок, як уламки скла від розбитих рожевих окулярів There is nothing so hurtful for the brain as splinters of broken rose-coloured spectacles. Ничто так сильно не ранит мозг, как осколки стекла от разбитых розовых очков (С) Me Link to comment Share on other sites More sharing options...
willzah1313 Posted October 24, 2012 Share Posted October 24, 2012 So I'm guessing it is modeled based on what you say yo-yo, just a subtle effect... guess it would take more than an open canopy to REALLY slow her down... Link to comment Share on other sites More sharing options...
Echo38 Posted October 25, 2012 Share Posted October 25, 2012 You see, I haven't bought the p-51 yet, and was really willing to know... I can almost promise you that you won't be disappointed with the simulation. As Yo-Yo said, open-canopy drag isn't yet modelled, but you can also see that Eagle Dynamics has it on the list of things to do. And "we're working on it" isn't an empty promise, if you examine E.D.'s history. When I started flying the P-51D beta just a few weeks ago, it was impressive, but missing a great deal. Now, one update later, the simulation is so much closer to being complete. I can't wait to see further improvements--and they are coming, barring a flight-sim apocalypse. Link to comment Share on other sites More sharing options...
Anatoli-Kagari9 Posted October 25, 2012 Author Share Posted October 25, 2012 Thx Echo, yes, I am sure DCS p-51 is the way to go :-) I plan buying it before the end of this month... waiting for the salary on my account... :-/ Flight Simulation is the Virtual Materialization of a Dream... Link to comment Share on other sites More sharing options...
leafer Posted October 26, 2012 Share Posted October 26, 2012 I can almost promise you that you won't be disappointed with the simulation. As Yo-Yo said, open-canopy drag isn't yet modelled, but you can also see that Eagle Dynamics has it on the list of things to do. And "we're working on it" isn't an empty promise, if you examine E.D.'s history. When I started flying the P-51D beta just a few weeks ago, it was impressive, but missing a great deal. Now, one update later, the simulation is so much closer to being complete. I can't wait to see further improvements--and they are coming, barring a flight-sim apocalypse. Think it's time we storm ED building hands on hip demanding further development of fighters from same era? We shall go in the summer when it's not too cold. :music_whistling: ED have been taking my money since 1995. :P Link to comment Share on other sites More sharing options...
Echo38 Posted October 27, 2012 Share Posted October 27, 2012 For a P-38? I'll get my pitchfork. Link to comment Share on other sites More sharing options...
Loki_ Posted October 27, 2012 Share Posted October 27, 2012 There is no additional drag modelled in the a10 with a closed canopy versus canopy open (blown off) Link to comment Share on other sites More sharing options...
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