0.00.38 PMDG 737NGX
TUTORIAL #2
27FEB15 RTM DO NOT DUPLICATE For Simulator Use Only
Press the PROG key to bring up the PROGRESS page.
We’re concerned with the 4th and 5th rows here. Line 4 is telling
us our distance to go (DTG), predicted arrival time and predicted
remaining fuel at LOWI. Line 5 shows us our current total fuel on
the right side.
Arriving at accurate predictions for these numbers is one of the
most complicated programming tasks we have in creating an
addon like the PMDG 737NGX. The FMC in effect simulates the
whole flight mathematically, taking into account the changes in
fuel flow, drag and so on throughout each phase of the route.
Takeoff and climb use more fuel than cruise or descent do – the
FMC knows all of this specific to the engine limits for this actual
flight. This is why a simple fuel planner that operates on an
average fuel flow number won’t come up with completely
accurate predictions for you.
After my particular run of Tutorial #1’s flight, according to the FMC I
arrived shut down at the gate in Amsterdam with 9600 lbs (4354 kg) of
fuel in the tanks.
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