Jarhead1971 Posted December 22, 2020 Share Posted December 22, 2020 Guys and Gals, I'm not proficient at air file editing, though in CFS2 I have manipulated some portions of the air files. I recently got my FS2004 Century of Flight working the way it should on my Windows 10X64 computer. I am having a problem getting the SkySpirit "POSKY" 777-10 flying properly. It is a tank to get off the runway and airborne even from a long runway at a major airport. Once airborne, it is a beast to get up to cruising altitude. Once at cruising altitude above 30k it cannot be made to fly faster than mach .64 even though specs from Boeing say .84 max cruising speed. When I hit mach .66 it crashes to "overstressed" and the sim ends. Where do I look in the air file and how do I correct the values to make it accurate to actual specs? Thanks in advance! Lee Link to comment Share on other sites More sharing options...
plainsman Posted December 22, 2020 Share Posted December 22, 2020 If you would post a zip of the .air and aircraft.cfg (just those two files), I would be happy to take a look at it. I7-9700K, RTX-2070, Asus Strix Z-390-H MB, 32gb G Skill 3000 CL15, Corsair Obsidian 750D case, WD Black 1tb M.2, Crucial CT500MX SSD, Seasonic Prime 750W Titanium PSU Link to comment Share on other sites More sharing options...
Jarhead1971 Posted December 22, 2020 Author Share Posted December 22, 2020 Here you go: Just delete the dot txt, which I am fairly certain is unnecessary to say......smileBoeing 777-200LR General Electric 90-110B1.zip.txt Link to comment Share on other sites More sharing options...
plainsman Posted December 22, 2020 Share Posted December 22, 2020 Please repost without the dot.txt. I think zip files attach under go advanced (they used to anyway!). I7-9700K, RTX-2070, Asus Strix Z-390-H MB, 32gb G Skill 3000 CL15, Corsair Obsidian 750D case, WD Black 1tb M.2, Crucial CT500MX SSD, Seasonic Prime 750W Titanium PSU Link to comment Share on other sites More sharing options...
mrzippy Posted December 22, 2020 Share Posted December 22, 2020 To get the 2 files, just rename the download to files.zip. The 2 files will then show. Still thinking about a new flightsim only computer! Link to comment Share on other sites More sharing options...
plainsman Posted December 22, 2020 Share Posted December 22, 2020 I tried to rename it, but it still retains the text file property. I7-9700K, RTX-2070, Asus Strix Z-390-H MB, 32gb G Skill 3000 CL15, Corsair Obsidian 750D case, WD Black 1tb M.2, Crucial CT500MX SSD, Seasonic Prime 750W Titanium PSU Link to comment Share on other sites More sharing options...
mrzippy Posted December 22, 2020 Share Posted December 22, 2020 I tried to rename it, but it still retains the text file property. I just deleted the .txt off of the end and I get what is shown in my screenshot. My chromebook can't open them because I don't have notepad. Still thinking about a new flightsim only computer! Link to comment Share on other sites More sharing options...
plainsman Posted December 23, 2020 Share Posted December 23, 2020 I tried to rename it and this is the result. The .txt does not show, so I can't delete it.777.zip.txt I7-9700K, RTX-2070, Asus Strix Z-390-H MB, 32gb G Skill 3000 CL15, Corsair Obsidian 750D case, WD Black 1tb M.2, Crucial CT500MX SSD, Seasonic Prime 750W Titanium PSU Link to comment Share on other sites More sharing options...
mrzippy Posted December 23, 2020 Share Posted December 23, 2020 Rename it to this: Still thinking about a new flightsim only computer! Link to comment Share on other sites More sharing options...
Jarhead1971 Posted December 23, 2020 Author Share Posted December 23, 2020 Here is the text of the aircraft cfg: Aircraft.txt Link to comment Share on other sites More sharing options...
Jarhead1971 Posted December 23, 2020 Author Share Posted December 23, 2020 I have tried several different options for the air file, none work to upload. The only thing I can suggest is to download the Aircraft from the library here. I did not modify the air file, so the one here in the library is the one I have. Link to comment Share on other sites More sharing options...
plainsman Posted December 23, 2020 Share Posted December 23, 2020 This ought to be easy but it isn't???? I7-9700K, RTX-2070, Asus Strix Z-390-H MB, 32gb G Skill 3000 CL15, Corsair Obsidian 750D case, WD Black 1tb M.2, Crucial CT500MX SSD, Seasonic Prime 750W Titanium PSU Link to comment Share on other sites More sharing options...
Jarhead1971 Posted December 23, 2020 Author Share Posted December 23, 2020 It will not allow air nor zip files to be uploaded under advanced. I did find one problem (I think) in the aircraft cfg file: [Reference Speeds] flaps_up_stall_speed=174.000 full_flaps_stall_speed=158.000 cruise_speed=485.00 max_indicated_speed=330.000000 max_mach=0.890020 How can the cruise speed be higher than the max indicated speed? Yes, I know about flying at altitude and switching over to Mach vs IAS above 10k feet.... I am wondering if MS FS2004 recognizes 330 kts as max even above 10k when the aircraft is at mach .84? Link to comment Share on other sites More sharing options...
Jarhead1971 Posted December 23, 2020 Author Share Posted December 23, 2020 Here is the name of the file in the library: ssp_b77w_aca.zip Link to comment Share on other sites More sharing options...
plainsman Posted December 23, 2020 Share Posted December 23, 2020 (edited) In the .air file. Check 316 Mmo=0.895 Check 1101 Vmo=345 Positive G limit=4000 Negative G Limit = 3000 I am downloading it now. You can really ignore the above, that was not the problem. Edited December 23, 2020 by plainsman I7-9700K, RTX-2070, Asus Strix Z-390-H MB, 32gb G Skill 3000 CL15, Corsair Obsidian 750D case, WD Black 1tb M.2, Crucial CT500MX SSD, Seasonic Prime 750W Titanium PSU Link to comment Share on other sites More sharing options...
plainsman Posted December 23, 2020 Share Posted December 23, 2020 I think I found the problem. In the aircraft.cfg edit to this. max_pitch_velocity_lo_alt=2.000000 max_pitch_velocity_hi_alt=1.600000 max_pitch_velocity_lo_alt_breakpoint= 7000.000000 max_pitch_velocity_hi_alt_breakpoint=24000.000000 max_bank=30.000000 max_bank_acceleration=1.800000 max_bank_velocity=3.000000 I7-9700K, RTX-2070, Asus Strix Z-390-H MB, 32gb G Skill 3000 CL15, Corsair Obsidian 750D case, WD Black 1tb M.2, Crucial CT500MX SSD, Seasonic Prime 750W Titanium PSU Link to comment Share on other sites More sharing options...
Downwind66 Posted December 23, 2020 Share Posted December 23, 2020 Lee - I have a Boeing 777-300, not the ER class, but, here is the Weight & Balance weights on my aircraft which is quite a bit different than yours! You might want to go into the library and pull up some downloads for the 777-300ER, check their respective aircraft.cfg Weight & Balance and make a comparison to both yours and mine! Something looks way out of proportion on your weighting?? Worth a look see!! [WEIGHT_AND_BALANCE] max_gross_weight = 660000 // (pounds) empty_weight = 347800 // (pounds) reference_datum_position = 0, 0, 0 // (feet) distance from FlightSim Reference position: (1/4 chord, centerline, waterline) empty_weight_CG_position = -12, 0, 0 %%%% Yours is 0,0,0 // (feet) longitudinal, lateral, vertical distance from specified datum max_number_of_stations = 50 station_load.0 = "170.0, 86.0, -2.0, 0.0, Pilot" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) station_load.1 = "170.0, 86.0, 2.0, 0.0, Co-Pilot" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) station_load.2 = "850.0, 0.0, 0.0, 0.0, Crew" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) station_load.3 = "680.0, 52.0, 0.0, 0.0, First Class" // 850 Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) station_load.4 = "1496.0, 11.0, 0.0, 0.0, Business Class" //1870 Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) station_load.5 = "2992.0, -30.0, 0.0, 0.0, Coach 1-16" //3740 Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) station_load.6 = "2040.0, -72.5, 0.0, 0.0, Coach 16-29" //2550 Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) station_load.7 = "1600.0, 47.0, 0.0, -6.0, Forward Cargo" //2000 Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) station_load.8 = "400.0, -67.0, 0.0, -6.0, Aft Cargo" // 500 Weight (lbs), longitudinal, lateral, vertical positions from datum (feet) ;Moments of Inertia empty_weight_pitch_MOI = 2000000 %%%% Yours is 41600000 empty_weight_roll_MOI = 5900000 %%%% Yours is 42000000 empty_weight_yaw_MOI = 8300000 %%%% Yours is 67500000 empty_weight_coupled_MOI= 0.0 Also, above the entry for empty_weight_CG_position = -12, 0, 0 Yours is 0, 0, 0 Lee - Keep us posted and Good luck! Rick :cool: Link to comment Share on other sites More sharing options...
plainsman Posted December 23, 2020 Share Posted December 23, 2020 Rick, they had the max_pitch_velocity_hi_alt=1.600000 set to a way too low value, causing it to come apart at almost any force applied. It was originally max_pitch_velocity_hi_alt=0.30000. I7-9700K, RTX-2070, Asus Strix Z-390-H MB, 32gb G Skill 3000 CL15, Corsair Obsidian 750D case, WD Black 1tb M.2, Crucial CT500MX SSD, Seasonic Prime 750W Titanium PSU Link to comment Share on other sites More sharing options...
Downwind66 Posted December 23, 2020 Share Posted December 23, 2020 Rick, they had the max_pitch_velocity_hi_alt=1.600000 set to a way too low value, causing it to come apart at almost any force applied. It was originally max_pitch_velocity_hi_alt=0.30000. Hi Bob, yes, there appears to be many fields that don't look too Kosher! Yes, I use a cheat sheet to check values on many of my downloads and I show the field that you are referring to should have a value of 1.500000. You say 1.600000 which wouldn't effect one way or the other, but yes, a value of 0.30000 is definitely not correct! What surprised me, was the values of Lee's Weight & Balance vs what I show on my 777. If I were Lee, I'd be doing some research on getting values of 777-300ER downloads, and then try making some changes to see if it helps! That's what I like about freeware, if you can't make it work, throw it to File 13 and move on to the next freeware download! :rolleyes: Rick :cool::cool: Link to comment Share on other sites More sharing options...
plainsman Posted December 23, 2020 Share Posted December 23, 2020 I don't like POSKY air files, as they use a lot of fudge factors. I agree a lot is not quite right, but the one line is a show stopper. I7-9700K, RTX-2070, Asus Strix Z-390-H MB, 32gb G Skill 3000 CL15, Corsair Obsidian 750D case, WD Black 1tb M.2, Crucial CT500MX SSD, Seasonic Prime 750W Titanium PSU Link to comment Share on other sites More sharing options...
DirkDP Posted December 23, 2020 Share Posted December 23, 2020 (edited) Hi, And POSKY aircraft usually come overloaded... Station load and fuel maxed out, so you'll be way over MTOW, unless you edit those numbers. Check the FS9 Fuel & Payload window. If you count 175lbs/pax, you can set the pax load stations to a realistic number. And check the CG in the Fuel & Payload window as well, should be around 25-30%MAC, like this: If not, you may need to play with the empty_weight_CG_position value and/or the wing_pos_apex_lon value in the [airplane_geometry] section. Regards, DDP. Edited December 23, 2020 by DirkDP Link to comment Share on other sites More sharing options...
Downwind66 Posted December 23, 2020 Share Posted December 23, 2020 I don't like POSKY air files, as they use a lot of fudge factors. I agree a lot is not quite right, but the one line is a show stopper. Well, Bob, I found the download, dropped it in my computer and lo and behold, the Weight & Balance was 74,023 LBS over gross, which was due to having 11048.26 gallons too much fuel. I revised fuel settings, revised the aircraft.cfg, and the plane is flying great, can't say for certain what it will do in the high altitudes that Lee was talking about? It's not a bad little download! Lee, when you read this, PM me and maybe I can try to get a copy of the revised aircraft.cfg to you and you can revise on your end. Thanks Bob, I think we might have saved an aircraft going to File 13? I might just keep mine! Rick :cool: Link to comment Share on other sites More sharing options...
Downwind66 Posted December 23, 2020 Share Posted December 23, 2020 (edited) Hi, And POSKY aircraft usually come overloaded... Station load and fuel maxed out, so you'll be way over MTOW, unless you edit those numbers. Check the FS9 Fuel & Payload window. If you count 175lbs/pax, you can set the pax load stations to a realistic number. And check the CG in the Fuel & Payload window as well, should be around 25-30%MAC, like this: [ATTACH=CONFIG]224364[/ATTACH] If not, you may need to play with the empty_weight_CG_position value and/or the wing_pos_apex_lon value in the [airplane_geometry] section. Regards, DDP. Yes, Dirk, your FS9 screenprint looks like it is for a different aircraft than a B777? Lee was over gross by 74023 lbs, which equates to 11048.26 gals of fuel. I revised, downloaded the aircraft in my FSX and it's flying well! Thanks, Lee might learn something with this freeware! Rick :cool: Edited December 23, 2020 by Downwind66 Link to comment Share on other sites More sharing options...
DirkDP Posted December 23, 2020 Share Posted December 23, 2020 Hi, Yes, Dirk, your FS9 screenprint looks like it is for a different aircraft than a B777? Yes, but that doesn't matter, it's only to show the position of the CG target at ~25%MAC. DDP. Link to comment Share on other sites More sharing options...
Downwind66 Posted December 23, 2020 Share Posted December 23, 2020 okay Link to comment Share on other sites More sharing options...
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