Surfingnet Posted January 12, 2023 Posted January 12, 2023 Title. I guess it has something to do with air flow issues but I'm not familiar with how jet engines work. Could someone explain it to me ? (I'm assuming it's a real thing (is it?) and not only in DCS) or maybe share a video about this very thing. Thanks !
razo+r Posted January 12, 2023 Posted January 12, 2023 (edited) Engines shutting down while experiencing negative G's is the result of the inability of pumping fuel to the engines while flying in those conditions. You have a small fuel tank that supplies the engines with fuel during negative G's. If this small tank runs out of fuel, the engines obviously die. The main tanks/pumps are unable to supply fuel while experiencing 0 or less G's. Edited January 12, 2023 by razo+r 2 1
Surfingnet Posted January 12, 2023 Author Posted January 12, 2023 Oh I thought it had something to do with the air intake... Thanks sir it's a very clear answer.
okopanja Posted January 12, 2023 Posted January 12, 2023 (edited) Small addition: this feature came due to a crash of a single Su-27 flanker, where the root cause was determined to the fact that fuel tank acting as buffer was depleted due go negative G maneuvers. To my best knowledge this was an early version of flanker, so more up-to-date may or may not have this problem. As a workaround you should avoid negative Gs, that said this can usually occur in 2 cases: 1. you climb, and suddenly try to level flight. In this case remember to make this transition less severe and you will be fine. 2. you fly level and try to follow the terrain, by pushing the stick down suddenly. In this case, I suggest instead a 180 roll, with pull toward yourself, followed by additional rotation and pull again toward yourself. This will be beneficial since you will actually make a tighter climb/descent. Edited January 12, 2023 by okopanja
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