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Post by simpilo on Mar 22, 2018 17:10:50 GMT
Them fuel tanks is best left as is as with any HJG aircraft I have played with in FS2004 never had problems with center of gravity and I always set proper fuel for taxi, take off, climb, trip time, and anticipating if winds are tail or head winds. The overweight factor isn't a biggee. I know of a free fuel planner that is meant for the 737NG series that will work just as well for the HJG 737 classic series. As aerofoto said changing variables like fuel capacity can cause a domino effect with other things that make the simulation work. Especially with FS2004 and center of gravity. "As Real AS It Gets" just saying that its a simulator it can do only so much.
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Post by walterleo on Mar 23, 2018 23:49:44 GMT
Hi friends:
One can increase fuel quantities in FS simulations if one acts like with real airplanes preparing them for a long distance ferry flight: 1) The airplane should have a center tank, so one can avoid handling problems and undue shifts of the center of gravity in spite of rising the content of the center tank. 2) Having that one can trade payload (e.g. passangers or freight) for more fuel. The maximum takeoff weight remains the same. So I did with my version of the Tu-124 as VIP airplane. 3) In real it was done that way with the Tu-114 D version "Kubinsky Variant", I did it also in my Tu-114 D.
As airliners are built to haul freight or passengers so its designers dont built in tanks which would eat up all payload when full. I would not try to experiment with a bigger fuel load e.g. in an IL-62 as that airplane (and simulation) is very sensitive to CoG shifts due to load.
Kind regards
Walter
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Post by nightowl702 on Jul 23, 2018 15:35:24 GMT
Hi Guys. Im not trying to beat a dead horse here but I just happened to be going through my desk and I just happened to find among other things a copy of the Delta Airlines quick refueling guide. Delta at the time flew the 737-200, 300 & 800. The following image shows the page for the 737. All had the same tank layout but different capacities. I know some have said the capacities are airline specific however I can tell you from experience these capacities were similar to all airlines 737's 3 main tanks. The top two rows are the capacities for the 737-200, the next row down is for the 737-300 (-400 & -500 similar) and the bottom row is for the -800 (-700 & -900 similar) Again the only airline specific differences I saw was the installation of aux tanks. You may do what you wish with this info
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Post by Mike Monce - HJG on Jul 25, 2018 15:22:05 GMT
Yes, this is definitely a zombie horse! Once again, all of our data comes from Boeing: ( www.boeing.com/assets/pdf/commercial/airports/acaps/737.pdf ) I, once again, checked our 737's against the Boeing data. I reiterate that there are variations that can occur among airlines, so we do the best we can given the manufacturer's data. AND I must emphasize that there are also some compromises made with regard to weight loading, CG and fuel loading in order to get the plane to fly as close to real numbers as is possible within FS Here's what I found: -300 Yes there is a slight discrepancy in total fuel loading as compared to Boeing. For the 140,000 lb model we supplied using the CFM56-3C engines, Boeing lists 6295 gal, while our plane is at 6506 gal. An overage of 211 gallons. If you want to correct that, then just reduce the center tank value by 211 gal in the cfg, or wait until we update the cfg. The 211 gal difference will not impact the FDE in the slightest. -400 We modeled the 150,000 lb plane with the CFM56-3C engines @ 23,500 lb thrust which Boeing lists the fuel load at 6295, we have 6294. Increase the center tank by 1 gal if you wish. -500 We modeled the 133,500lb version, but did a bit of a compromise and used the CFM56-3B1 engines and went with the Boeing listed fuel of 6121 gals, which is exactly what is loaded on the plane. The mixture of weight, engine, and fuel loading was done to give the most fidelity to the FDE. Again feel free to change things, but the new FDE will be up to you to deal with. Mike
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Post by nightowl702 on Jul 26, 2018 14:53:06 GMT
The document that you provided the link to in your post shows what I have been saying from the beginning: 737 classics total fuel about 35,500lbs with no aux tanks, 737 Next gen total fuel without aux tanks about 46,000lbs. The 6295 gals for the classics, as shown in the document you referenced, is achieved with a 1000 gal. aux tank in the aft cargo hold. Subtract the aux tank 5295 gallons x 6.73 = 35,635 lbs. Just over 10,000lbs in each wing and a little over 15,500lbs in the center tank. Im not arguing about the total quantity that the classics can hold. Its listed right in that document they are capable of holding 6295 gallons with aux tanks. I am just pointing out the distribution is incorrect. For the classic to hold that amount the proper distribution would be 10,000 lbs in each wing, 15,500 lbs in the center tank and the remaining in the aux tank. Since there is no gauge for the aux tank on the panel combining the aux tank quantity with the center tank makes sense. For the Next Gen 737's to hold the maximum they would have 8650 lbs in each wing and 28,900 lbs in the center tank with any additional in aux tanks. Just wanted to show im not crazy And by the way thanks for posting the link to that document. There is a lot of good info in there
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