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Post by jensendk68 on Feb 11, 2018 10:29:56 GMT
Hello HJG
First of all - thank you very much for the 737s. They are a true pleasure both in vision and in flying. However I a have a question regarding this simulation. I did a little calculation regarding the fuel comsumption. And it seems that the 734 has a range in the neighbourhood of 3.500-4.000 nm with full fuel tanks. As i can look up, the range of the real plane is cirka 2.000-2.200 depending on subtype. I s there a simple way to adjust the fuel-flow? Or is it hard programming work to adjust this?
I thank you in advance.
Regards
Kim Jensen
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Post by George Carty - HJG on Feb 11, 2018 12:51:52 GMT
Almost all jet airliners are too heavy to fly with both a full payload and a full fuel load – the range figure that is normally quoted is the range with maximum payload, not the range with full fuel tanks.
George
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Post by jensendk68 on Feb 11, 2018 14:15:09 GMT
Hi George
Now that was a surprise. I have always believed that it was the other way round. Thanks for your help.
Regards
Kim
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Post by christrott on Feb 11, 2018 15:18:41 GMT
When range is quoted, it is always specified under what conditions. On the Boeing website, they usually give 2, one with max payload and one in "ferry" configuration and they're annotated as such. Both take into consideration normal requirements for reserves as well. On Wikipedia and 737.org.co.uk, they list only the range with max payload per the annotations. Airbus has a tendency to only list max range (ferry configuration) and they put the notation as small as possible, but that's par for the course for their marketing department. I really like how Textron does theirs because they list max range in ferry config without reserves or with NBAA reserves, and then both ranges with max payload. Really gives you an idea of how far the plane can really go if needed.
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Post by George Carty - HJG on Feb 11, 2018 15:19:26 GMT
The maximum-payload range is the one that is quoted for airliners, because that is the best indication of what distance is the practical maximum over which the aircraft can be used to earn money.
The "ferry range" of a combat aircraft on the other hand is the range with full fuel tanks, as the aircraft is unlikely to be carrying any weaponry during a ferry flight.
George
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Post by aerofoto - HJG Admin on Feb 11, 2018 19:28:43 GMT
I wouldn't recommend adjusting the FUEL SCALER value. The calculations we apply result in a pretty accurate fuel burn indications "at sea level" .... and whatever these become "at altitude" (subject to various drag related paramters we need to apply) we're stuck with .... and that's the way FS is/works .... at best. Change the FUEL SCALER value .... and that'll just throw everything right out of spec, so, we recommend this "NOT" be done .... at all. Using real world manufactuer supplied data we compile our simulated aircraft loadings based on 100% fuel capacity .... and 100% payload capacity too .... for any particular aircraft type we represent rather than setting both to arrive at a particular/common MGW loading. The way we do things (like this) promotes more accurate flight planning .... per fuel, and payload, or both, being able to be adjusted "from the maximum airraft capacities" in accordance with any aircraft type and ones intended flight/s. What folk need to do is .... 1. Reduce payload "to accomodate more fuel" (for greater range) .... whilst remaing at, or within, the certified MGW. 2. Reduce fuel load "to accomodate greater payload" (but at the expense of range) .... whilst remaing at, or within, the certified MGW. 3. Reduce both fuel and payload .... as required for specific flights. The recommended sample loadings quoted within "Section 5/BASIC FLYING GUIDES" of following-linked forum based manual for these B737-300/400/500 simulations are all based on option # 2 above (fuel reduction only and no payload adjustment) and which is a good place to start. .... B737-300/400/500 PANEEL INSTALLATION & HANDLING NOTES (manual)tonymadgehjg.proboards.com/thread/8798/b737-300-installation-handling-notes[/b]Fuel loadings for all flights should be calculated/planned in accordance with loadings, altitude, planned airspeed/velocity, and distance/duration of any particular virtual flight (using the "basic cruise F/F figure" we quote within each guide) .... and with a reasonable reserve remaining also. The maximum ramp weight for most of these aircraft exceeds MTOW by around 1,000 LBS .... so so .... and which can be factored into our recommended loadings for all of these simulations too Mark C AKL/NZ
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Post by jensendk68 on Feb 16, 2018 21:25:30 GMT
Hello Mark, George and all of you
Thanks for the clarification on the subject. It is now for certain that i will not tamper with anything, but lean myself slightly back and enjoy flying.
Regards
Kim
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