Quig Posted July 28, 2011 Posted July 28, 2011 Unless I'm severely misstaken, since .09 we're able to input wind conditions for different altitudes to improve our dumb (or was it guidance challanged?) bombs accuracy. Anyone else having issues with this? I can input ground wind no problemes by following flight manual instructions, but when it comes to other altitudes, no dice. For instance, I have this data from my campaign mission: 0: 327 deg, 2m/s 2000: 302 deg, 5m/s 8000: 288 deg, 9m/s Now, according to flight manual, first you specify altitude in thousands of feet on the scratchpad, then click a free row of wind. If I input 0, I get 0 feet (logical, yes), if I input 2, I get an "CDU input error". If I try 02, same thing. Now if I put in 08, I get 07 on the windline (I assume here it's 7000 feet, why 7, when I give it 8?). To experiment I also input 20 (for 2000) which also didn't work (not very surprised), and lastly I tried 80 (for 8000) which resulted in a line of 79, which again seems just plain wierd. So, is there something else that needs to be done to make this work, am I missing something, or is there something fishy going on with the wind inputs?
Quig Posted July 29, 2011 Author Posted July 29, 2011 Good point. I'd have to check the inflight wind and see if the mission creator just interposed the m/s for knots/s or if the conversions need to be made. Same for wind direction I s'pose. But then at least it's not just me going crazy, but there is something fishy going on with the wind page afterall then? I wonder, is it better to leave it as is, or would some wind data be better than none. My thinking here being if you can't have the whole spectrum as given by the briefing, just some parts might skew the data incorrectly, as oposed to letting the computer work with a blank slate. Thoughts?
Quig Posted July 29, 2011 Author Posted July 29, 2011 Just to clarify, this data is from the (in .09, the only) campaign, I'm not yet a mission creator myself. With that said I did some checking from the editor and noticed something strange. First, it seems you are correct, all of those winds seem to be in the opposite direction from how the wind should be inputed into the CDU, and the speeds were listed as m/s, so again, that's counterintuative to how the wind is to be inputed, as I guess the CDU only works with knots/s. Not only that but I were completely unable to locate any setting for metric or imperial in the ME. Game options has me listed as imperial, but the ME still shows m/s. Lastly, I noticed the weather page in the ME allowed one to set windspeeds and directions for 3 heights, those 3 mentioned, ground, 2000 and 8000. The altitudes was hardcoded, you had a textbox for speed and direction, but for those 3 altitudes alone. If the CDU isn't working for anything below 7000 (or so my tests seem to indicate) that practically makes the wind function still more or less inoperable. Could be something to take to ED maybe, fix one or the other. If the CDU is working as it's supposed to, then the ME should be able to give winds for higher altitudes, or fix the CDU =) Either way, right now it seems there's not to much point bothering about the wind inputs, when the only wind we can know is something we cannot input properly.
Eddie Posted July 29, 2011 Posted July 29, 2011 (edited) Could be something to take to ED maybe, fix one or the other. If the CDU is working as it's supposed to, then the ME should be able to give winds for higher altitudes, or fix the CDU =) Those heights are in metres, so 8000, is actually 26,000ft. Additionally, although you can only specify the wind direction and speed for those 3 specific altitudes the sim calculates the wind speeds (and turbulance if any) at all altitudes from those 3 parameters. Best way to see this is action is to watch the wind info on the CDU as you change altitudes, you'll see if change a lot at high altitude compared to ground level. Especially if the mission designer has put some thought into the weather conditions. On a side note, the 8000m parameter is in keeping with the lower edge of jetstream winds, and can be set rather high if you're trying to be realistic. The weather research I've done for my mission projects indicates that 30-40knots is about average for high level winds in the black sea region. Edited July 29, 2011 by Eddie
Quig Posted July 29, 2011 Author Posted July 29, 2011 (edited) Doh, ofc they are, all the other data is in meters. Makes perfect sense for alot of reasons too. Was kinda wondering on that wind picking up so strongly as just 8000. 2000m gives me roughly 6.500 feet. Almost the 7 I was able to input into the CDU then. I s'pose 26 shouldn't be a problem then even tho I haven't tried it. Close enough to make me happy, now I just need to remember to always make the direction, speed and altitude conversions from the auto-generated briefings to knots and feet. I'm still hoping for a future patch to make the ME conincide with the game, or a setting to make it so anyway. On that regard, is it how it works IRL, that you get the wind heading (towards direction, so to speak, not sure what the technical term is) in a briefing and you always have to convert it. Or is it possible that US gives their wind in the same way they have implemented in the A-10, so it makes perfect sense there, but other air forces have different proceedures? It just feels a bit strange that there is this big conversion needed. At least I think I can finally get some good out of the WIND page! Edited July 29, 2011 by Quig
effte Posted July 29, 2011 Posted July 29, 2011 In aviation, wind is "always"* given as the direction the wind is blowing from. *) In quotes, as there's always some backwards place which insist on doing things differently from the rest of the world, giving pressure information in different units or what not... :) ----- Introduction to UTM/MGRS - Trying to get your head around what trim is, how it works and how to use it? - DCS helos vs the real world.
Machinist Posted July 29, 2011 Posted July 29, 2011 So we have to convert meters to feet, meters/sec to knots/hr, and then input a wind direction 180° opposite of what we're given in the briefing? :cry:
Quig Posted July 29, 2011 Author Posted July 29, 2011 So we have to convert meters to feet, meters/sec to knots/hr, and then input a wind direction 180° opposite of what we're given in the briefing? :cry: That would seem to be the case. The ME is going to stay the way it is because it has to conform to all possible aircraft modules, Ka-50, A-10, etc. The ME works in a standardized correct way and if it doesn't make it easy for any particular aircraft... oh well That makes some sense I s'pose. I'm just happy I finally (I think) have the wierdness with the windpage figured out.
Migo Posted July 30, 2011 Posted July 30, 2011 (edited) How should one put it in now ? Lets take 150 at 8 meters per secound for example. 150+180=330 Heading. What would be the 8m/s in kn/h ? 8*0.51*3600=14,688kn/h ? Would that be correct ? Edited July 30, 2011 by Migo
effte Posted July 30, 2011 Posted July 30, 2011 150 + 180 = 320? Hmmm... might want to redo that one? :) 8*3.6/1.852=15.55 knots. Not sure where you got 0.51? ----- Introduction to UTM/MGRS - Trying to get your head around what trim is, how it works and how to use it? - DCS helos vs the real world.
Migo Posted July 30, 2011 Posted July 30, 2011 (edited) Ah yea, 330 x/ 1kn= 0.51444m/s Why only 8*3.6 ? I thought 3600 to get from seconds to hours ? Edited July 30, 2011 by Migo
MTFDarkEagle Posted July 30, 2011 Posted July 30, 2011 *3.6 get's you from m/s to km/h. Lukas - "TIN TIN" - 9th Shrek Air Strike Squadron TIN TIN's Cockpit thread
Migo Posted July 30, 2011 Posted July 30, 2011 (edited) Ah I see, thx. But he only got 15.55 knots, not knots per hour, am I wrong ? When I do "8/0.5144" I also got 15.55kn. Is there even something like kn/h ? Because kn=km/h ? @.@ Basically someone would type 33015 into the cdu windedit, right ? Edited July 31, 2011 by Migo
Migo Posted July 31, 2011 Posted July 31, 2011 I wonder how one is able to get the wind data from the different layers... Take the one from the ground, fly level at 2000/8000 and note the data from the cdu ? Can someone tell where I can find wind data in the cdu ? I know that there is wind data displayed under "Waypoint" but this does not seem to be the actual wind data the pitot takes, right ?
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