maybe
Nope, they are placed at the edges of tanks using modern flow systems, said tanks are also commonly raked with one way flow gates towards the uptake pump beyond the interior baffles.
Ejector pump boosted flow is and has been the standard for years on anything without a piston engine and such is only possible in a positive flow environment, you can probably guess where I’m going with this, I hope you pick up on it because I have very little interest in teaching you fluid dynamics.
I should also note as well that the above is a very basic example and not a 1 to 1 example for all military aircraft.
Very no, you are aware that tank protection systems have had non flammable positive pressure systems since WW2 right? The IL-2 pressurized it’s tanks with inert gas all the way back in 1941 and did not hamper it’s self sealing abilities.
Then I guess every major aircraft manufacturer is contaminating their fuel and every single modern jet or turboprop driven aircraft has flawed fuel systems. Don’t get on any airliner because you wont like how their tanks work.
That is not how fluid works…
2 Likes
So if this bug has been around before why doesn’t the god dam gaijin fix it? :/
Old bugs re-appearing is frankly a stable of gaijin development, I’ve straight up lost track of the number of supposedly “squashed” bugs that re-appear in later patches for no real reason.
EG just a bit ago we had the good ol’ “A-4 shooting causes the server to crash” bug thats appeared a total of 4 times now, its quite incredible.
This is my main issue with your statement: you simply don’t understand that when you pull negative g’s, the fuel is pulled upwards by the force. through the entire tank not just near the pump inlet,
sure this may be correct but it is not relevant to the discussion as it has no impact on fuel starvation when there is no fuel that it can suck up because it is placed at the bottom of the tank not the top.
you know bleed air comes from the turbine cold section right? any mosture drawn from that would be sent to the fuel tanks by your logic, hence causing fuel contamination (TLDR: it doest come from bleed air)
there is a reason planes aren’t meant to pull -G’s
This fuel starvation issue does not just affect the F-4 mind you, I’ve had the same issue with F-5s.
Please bug report this as I’m 99% sure this is a bug (It’s not just a visual or text pop-up bug as you do lose speed, the after burner actually shuts off).
1 Like
Actually it seems to be fine now.
And you simply do not understand how fluid displacement works, here, I’ve got a great physical example that you can try at home if you happen to have one. Go and grab one of those plastic water bottles and dump out about half of it, stick your mouth on it and try to inflate that top half as hard as you physically can, and then roll the bottle to the side while you maintain that pressure, you’ll notice that the water will still move a bit but if the pressure is high enough it will have a very hard time displacing the air and sliding under it, if you have really good lungs you might be able to actually hold the water in the base of the bottle for a second or two, the angle does come into play a bit but unlike the bottle you have, thats what the one way flows and baffles are for in tanks.
In such tanks the pressure is primarily there to ensure that the fuel flows through the one way gates towards the innermost section of the tank, aka where the pump itself is. In a sense, the air pressure is encouraging the fuel to stay close to the pump while the physical impediments, the one way gates, ensure that the air displacing the fuel inwards continues to do so.
The best example I can give off the top of my head of a similar implementation is, indecently, a dam. Lakes along a dam are much akin to those sections of the tank with one way valves, gravity causes those lakes to flow through the dams, which prevent flow backwards, down and down until it reaches it’s destination. The air pressure present is gravity in this situation, pushing all the fuel downstream and past the dams to collect it in the final section of the tank.
Good thing modern tanks dont flow out from the top or the bottom.
Indeed.
Man I guess the folks building modern aircraft do not know what they are doing and the industry standard is incorrect.
And said reason has been solved for years now.
2 Likes
Please stop talking about things you clearly know nothing about, there are bleed air filters and moisture separators
2 Likes
Oh yeah, maybe you should have mentioned those for clarification that those were included, as it sounded like you meant directly, when filters and moisture seperators are included bleed air can indeed be used.
here’s another experiment: upright half filled water bottle, spin it while holding the bottom of the bottle, where does it go?
Its implied, nothing on an aircraft is unfiltered except exhaust
Good example, sadly for centripetal + centrifugal forces in that situation with no bearing on interior pressure or flow.
1 Like
damn 8 napalms bro wants to get all 4 bases
I can get fuel starvation in my F-4EJ KAI, but it requires -3/-4G for about 5 seconds…
2 of them is napalms the others are 750 pound bombs meaning 1 napalm and 3 750 pound bombs for each base.
Implied is not the same thing as stated.
It’s still not fixed on the F-4s and as far as others have reported it hasn’t been fixed on other F-4s either. I’m playing right now and this bug is still there.
Same amount of time at lower negative G loadings?
Like bomb said, if this is occurring at very minor negative G loadings its 100% a bug, but -3 to -4 Gs is a bit more understandable.
Still very much so on the side of this being a bug as yeah the F-5s die with very little nose down input now.
1 Like
As far as I can see and other topics and bug reports many people have reported this bug but it seems like the gaijin developers aren’t paying attention.