Fuel management

Hi AV8B veterans,

Does anyone know:

1) if the basic drag index (BDI) that is shown on the VREST page is actually correct ? Is this BDI something calculated by the vrest computer or something that needs human input ? In DCS, the vrest BDI value changes when you load / unload either the gunpod or the litening pod, but does not change for any other loads (bombs, missiles, etc.) which does not seem to be correct (at least as far as I understand).

2) if the cruise and bingo pages are actually functional ? The right column (optimum cruise) in the cruise page seems somewhat correct to me, but not the left column (I don't even see the max range parameter decreasing over time).

Note: there's also a BDI value shown on the cruise and bingo pages, but it is stuck at 18.5

I'm currently working on fuel planning / management, bingo charts, etc. and any enlightment would be highly appreciated :helpsmilie::)

PS: you can manually change the BDI value on the vrest page via the ODU, but not on the cruise / bingo pages.

As you've noted, some of the VREST page is close to the expected values, whilst other parts seem to be placeholder or dummy values.

I've planned a basic flight plan using NATOPS performance charts and compared the VREST values to the actual flight.

I don't know if you'll find them useful but these are my rough Flight Plan Notes

Thanks Ramsay, I appreciate. I am currently doing quite some testing too. It took me a while to understand those "bingo charts" that you can find in the natops performance charts, but now that I think I have understood it would be great to be able to use them :-) The only remaining small issue is the drag index since it is obviously not modeled properly, but when you are RTB, back from a mission, you generally not have much weapons left under the wings (or you can jettison them), and you can consider that the drag index is in the 20ish (or a bit more if you are carrying the tpod and/or the gunpod). Will continue testing :-)