Mig-29 maximum fuel load?

[Sawamura]

Hi everyone,

 

i noticed something strange in my Mig-29S.

 

Even if i go to the mission editor and set 100 % fuel, or if im in the mission, on the ground and use the maintenence to refuel my aircraft with 100 % of fuel, the maximum amount, i can take with me is 3720 kg.

 

Does someone know, how i can increase the amount, to take more fuel with me? Droptanks dont change a thing. :huh:

 

Thanks in advance.

Edited March 19, 2011 by Sawamura

[EtherealN]

As far as I know, it's correct. The Migs fuel capacity is tiny. The gauge might well be a standard component common with other fighters.

 

Note that it doesn't measure droptanks. Adding drop tanks will give you more fuel - but that extra fuel will not show on the gauge.

[Sawamura]

I see.

 

I fly the Mig-29S from Russia. Are all Mig-29 versions, (A or S) with the same maximum fuel capacity or can other versions take more fuel with them?

[EtherealN]

I believe the S has a higher capacity than the A, but I'm not really the best at the migs.

[Alfa]

As far as I know, it's correct. The Migs fuel capacity is tiny. The gauge might well be a standard component common with other fighters.

 

It isn't - the fuel gauge isn't even standard among MiG-29 versions.

 

Note that it doesn't measure droptanks. Adding drop tanks will give you more fuel - but that extra fuel will not show on the gauge.

 

No but it clearly should - why else would the gauge indicate up to 7 tons of fuel? :)

[Sawamura]

I see.

 

Thanks a lot for your quick replys. :)

Realy helped me out.

[Alfa]

I see.

 

I fly the Mig-29S from Russia. Are all Mig-29 versions, (A or S) with the same maximum fuel capacity or can other versions take more fuel with them?

 

The MiG-29(9-12) was originally only capable of carrying a single external centerline tank of some 1500L.

 

The MiG-29(9-13) and MiG-29S(9-13S) have a slightly increased internal fuel capacity and ability to carry 3 external tanks - one 1500L centerline and two 1150L wing droptanks.

 

Attached are images of two MiG-29 fuel gauges - first is from a Hungarian MiG-29B(non warsaw pact export version) and the second is from a MiG-29S

Edited March 19, 2011 by Alfa

[mvsgas]

No but it clearly should - why else would the gauge indicate up to 7 tons of fuel? :)

I'm not sure how it works on the MIG-29 but just because the gauge is capable to show a higher number it does not mean that it's going to or it should. On the F-16, the fuel gauge "totalizer" could show up to 99,999 lbs of fuel.

[Alfa]

Its clearly not the same mvgas.

 

The scale on the MiG-29 gauge is finite and the indicated limit corresponds to the combined internal load + centerline tank. As you can see from the photos I posted, the MiG-29S gauge has indication for some 2 tons extra....corresponding quite closely to the extra capacity from the two additional wing drop tanks.

[ФрогФут]

No but it clearly should - why else would the gauge indicate up to 7 tons of fuel?

It should not.:)

In lockon we only have fuel gage scale. And additional fuel tanks do not have them. They only have flowmeter.

[Alfa]

If thats the case frogfoot, then why the difference in indicated capacity between the two versions of fuelgauges(photos I attached)?

 

The first version(from 9-12b) has indication limited to some 5,5 tons although the internal fuel capacity of a 9-12 is below 4 tons, while the second version(from 9-13) has indicated limit of some 7 tons although the 9-13 has only slightly more internal fuel capacity than the 9-12.

 

Additionally the fuelgauge(similar type) of the 9-15 and 9-31 has indicated limit of some 8 tons although the internal capacity of these is around 4,5 tons.

 

Are you sure what you said about the contents of external tanks not being in show in the fuelgauge isn't merely an issue concerning 9-12 back-fitted with the ability to carry wing-tanks - i.e. when retaining the initial fuelgauge version?

[ФрогФут]

If thats the case frogfoot, then why the difference in indicated capacity between the two versions of fuelgauges(photos I attached)?

Dunno, but they not only work as fuel capacity gauges, but as flowmeter gauges, so don't look on max number on the scale as fuel capacity.

[Cali]

I'm not sure how it works on the MIG-29 but just because the gauge is capable to show a higher number it does not mean that it's going to or it should. On the F-16, the fuel gauge "totalizer" could show up to 99,999 lbs of fuel.

 

The F-16/15/US jets have needles and a totalizer, the Russian jets just have the needles according to FC. Just like the gun counter on the 16, it doesn't hold 990 rounds. We can see how much fuel we have in different tanks, Russian jets can't.

[combatace]

The F-16/15/US jets have needles and a totalizer, the Russian jets just have the needles according to FC. Just like the gun counter on the 16, it doesn't hold 990 rounds. We can see how much fuel we have in different tanks, Russian jets can't.

 

Aren't the lights beside the gauge indicating tanks?

[Cali]

Aren't the lights beside the gauge indicating tanks?

 

I heard that, but you still can't tell how much fuel is in there, in US jets you can see how much you have. The lights just tell you when it's empty.

[combatace]

I heard that, but you still can't tell how much fuel is in there, in US jets you can see how much you have. The lights just tell you when it's empty.

 

May be they don't believe in pushing too much after Bingo.:smilewink:

[Alfa]

Dunno, but they not only work as fuel capacity gauges, but as flowmeter gauges, so don't look on max number on the scale as fuel capacity.

 

Ahh hang on.....I think the clouds are lifting :D

 

So the left indication colum(with "T" indication) shows the combined internal fuel level and only that. The varies lamps to the left indicate low fuel level in individual internal tanks, external tanks as well as overall low fuel level("bingo" state).

 

The shorter indication colum to the right(with "P" indication) shows the rate of consumption in tons per hour(?) at a particular throttle setting.

 

If this is correctly understood, then I guess the explanation for the differences in range scales between the fuelgauges could be:

 

a) the "T" colum of the MiG-29B gauge has max indication of 4 tons because the combined internal fuel capacity of the 9-12 is just below 4 tons, while it is set at 5 tons in the MiG-29S gauge because the combined internal capacity of the 9-13 is above 4 tons.

 

b) as for the range difference of the "P" colum. I seem to remember that the MiG-29 has a switch for selecting engine operation mode - i.e. to run in either a fuel economic training mode or full power combat mode, but that the MiG-29B(non warsaw pact export version) doesn't have that switch and that the engines are set to always run in the fuel economic "training mode".

 

If so it would explain why the scale for fuel consumption has a lower max indication on the MiG-29B gauge(5,5 tons) as compared with the MiG-29S one(some 7 tons).....and I would assume also as compared with the "full spec" 9-12.

 

It would also explain why this max indication value is higher(8 tons) on the MiG-29M/MiG-29K fuelgauge, since these versions have the more powerful RD-33K engine - IIRC some 500 kgf extra, which in turn would mean a higher fuel consumption at max throttle setting.

[mvsgas]

I completely forgot about this post, JLZ posted a link to the MIG-29 manual. Thank you JLZ. I'm re-downloading it since I do not have my main computer here. I bet it will tell us all the info about it.

http://forums.eagle.ru/showpost.php?p=959364&postcount=12

[Alfa]

... I bet it will tell us all the info about it.

 

Well not necessarily mvgas - I am sure it will explain the general functionality of the instrument, but such manuals tend to be very version specific and therefore rarely contains info about other versions and differences between them :)

[mvsgas]

Well the manual is for the G and GT models which can carry 3 external fuel tanks. Let see what we can find.

[Cali]

May be they don't believe in pushing too much after Bingo.:smilewink:

 

It's not about pushing after bingo, it's about knowing how much fuel you have. If you have an emergency and need to calculate distance to a divert field or other stuff. Bingo fuel doesn't mean crap in this game anyway. People have deadsticked it in from 40 miles away :smilewink:.

[ФрогФут]

So the left indication colum(with "T" indication) shows the combined internal fuel level and only that. The varies lamps to the left indicate low fuel level in individual internal tanks, external tanks as well as overall low fuel level("bingo" state).

I think there is a switch between T(Топливомер - fuel gage) and P(Расходомер - fuel flowmeter) and the scale is the same, just one from 0-5 and the other from 5 to 7.

You can fly, controlling the fuel quantity, or you can optimize your flight with the flowmeter.

[Alfa]

Yeah I considered that too - the switch at the bottom of the gauge is right between the "T" and "P" labels, so I guess thats how it works.

 

Speaking of which - take a look at the attached photo of the gauge in the Su-33. There is only one scale and it goes to 12 - I wonder if this functions only as flowmeter, since there is a separate needle fuelgauge to the right?.

[ФрогФут]

Might be. I don't work with Su-33, so i don't know.:)

[Alfa]

Fair enough :)