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Realistic Gulfstream IV flight dynamics?

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Anybody know where I can get some better numbers for my Gulfstream? I'm using the very lovely Gulfstream IV by Rick Sasala. The plane flies great, but the weights are all way off. This results in fuel flows and ranges not working well at all. I've found good information on the actual weights of the aircraft. Off the top of my head, the FS version has a max gross of around 20 or 30k, which is actually less than the empty weight of the real thing. I've modified the fuel flow scalar to give me the correct maximum range, but it gives a cruise fuel flow of about one tenth of what it should be.I've looked around a little for tweaks, but so far haven't found anything. Any tweakers out there who can point me in the right direction?

Here is some spec's,which are hard to find. http://www.smartcockpit.com/plane/gulfstream/GIV-GIVSP/ From this data, someone that knows how to tweak air files should be able to get close to the real A/C,as far as performance goes.

Jim Driscoll, MSI Raider GE76 12UHS-607 17.3" Gaming Laptop Computer - Blue Intel Core i9 12th Gen 12900HK 1.8GHz Processor; NVIDIA GeForce RTX 3080 Ti 16GB GDDR6; 64GB DDR5-4800 RAM; Dual M2 2TB Solid State Drives.Driving a Sony KD-50X75, and KDL-48R470B @ 4k 3724x2094,MSFS 2020, 30 FPS on Ultra Settings.

Jorg/Asobo: “Weather is a core part of our simulator, and we will strive to make it as accurate as possible.”Also Jorg/Asobo: “We are going to limit the weather API to rain intensity only.”


 

It is going to be difficult.Partially because Gulfstream is very opposed to anything related to Flight Simulator.Some guys who work a bit on flight dynamics are found over on the Sim-Outhouse forums. Another excellent source are the tools from Jerry Beckwith's MudPond.org site - http://www.mudpond.org/

"Better numbers" is far too broad a question. What sort of numbers are you looking for?RegardsBob ScottColonel, USAF (ret)ATP IMEL Gulfstream II-III-IV-VColorado Springs, CO

Bob Scott | President and CEO, AVSIM Inc
ATP Gulfstream II-III-IV-V

Sys1 (MSFS20+24/XPlane12+11): AMD 9800X3D, water 2x240mm, MSI MPG X670E Carbon, 64GB GSkill 6000/30, nVidia RTX4090FE
Alienware AW3821DW 38" 21:9 GSync, 2x4TB Crucial T705 PCIe5 + 2x2TB Samsung 990 SSD, EVGA 1000P2 PSU, 12.9" iPad Pro
Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, Twin TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case

Sys2 (P3Dv5/v4): i9-13900KS, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090
Samsung 55" JS8500 4K TV@60Hz,
3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU
Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro
PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box

Sys3 (DCS/P3Dv4/ATS/ETS): AMD 7800X3D, MSI MPG X870E Carbon, Noctua NH-D15S, 64GB GSkill 6000/30, EVGA RTX3090
Alienware AW3420DW 34" 21:9 GSync, Corsair HX1000i PSU, 4TB Crucial T705 PCIe5 + 2TB Samsung 970Evo Plus,
TM TCA Officer Pack
, Saitek combat pedals, TM Warthog, TM RS300 FF wheel/pedals, Coolermaster HAF XB case

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