[SU11] RECIP ENG FUEL FLOW:index not working

Dear Asobo, Please note setting the variable RECIP ENG FUEL FLOW:index on each
frame although it changes the engines fuel flows displays, it doesn’t affects
at all the real consumption levels in the fuel tanks. Example below: RECIP ENG
FUEL FLOW:1 set to 250000 pounds per hours… all variables are following:

However the tanks are not
draining as they should… they still draining very slow… and the engine debug
config shows this: Which is in
line to how I see the tanks draining. Since the RECIP ENG FUEL FLOW:1 has zero
influence in real fuel consumed by the aircraft, it becomes pointless and the
possibility to write custom fuel flow tables for Turbo Props is now very
reduced. Kind Regards, Raul

@FlyingRaccoon @EPellissier , Hi Guys, I don’t mind waiting on answers as I
understand the workloads are too high on your end, however would it be
possible to acknowledge somehow that these questions have been read and
received? as I said waiting times is part of the business and no issues there,
but I have raised some questions regarding TurboProps in the last couple of
months and I haven’t received any feedback yet. I just get worried these
question could get lost in time given the incredible quantity of question you
guys are getting on the website. so you guys think it could it be possible to
put something on the questions as “read” or something like that? Thanks in
advance for taking the time to read these questions and I wish you guys the
very best tomorrow with the anniversary release. Kind Regards, Raul

Hello @Simbol, This question is in my todo list. As for previous questions
regarding turboprop engine config, when it gets very technical and I’m not
qualified enough to answer, I need some help from our engine progs to
understand what’s going wrong. We only have 1 or 2 people that can investigate
those issues and they’re very busy people as you can imagine. Same goes for
flight model questions. I am very sorry for the delay in our answer,
especially when our doc is incomplete and we don’t provide enough information
for you to work with. That’s a situation we’re trying to improve and I’ll let
you know as soon as I have the beginning of an answer. Regards, Sylvain

Hi Sylvain, No problem, as I said as long as we know we are in a queue is all
good. I understand the constrain on resources very well. All the best, Raul

Hello @Simbol That’s one of the simvars where writing is in theory possible
but the sim fuel computation will overwrite what you have set. So the behavior
can be considered as undefined as it depends on operation order. Your
instruments are probably updated after your value is written and the sim
updates the fuel consumption. I tested with Da62 and it’s not the case,
probably because the instrument uses a different flow and is updated at a
different time. Regards, Sylvain

@FlyingRaccoon Sylvain, Thanks, so we have an issue, for turboprops we have
very little control to set correct fuel flow correctly. Before you change the
documentation, I think it works as intended for normal props (non turbo)… and
the issue is with “turbo” props. So the question is, what can we do for
TurboProps to help developers to improve the situation so we can simulate fuel
flow better? currently doing this airplane where the fuel flow is not linear
and it is dependent from other factors makes it very difficult for me to
achieve desired results. At the moment I am using RECIP ENG FUEL FLOW to at
least display the correct value for the user on the garmin and to users that
use external panels, so perhaps blocking the ability to write this variable
will make matters worse, can we leave it as it is until better implementations
in the future can be achieved? happy to create a new idea to put it in the
queue for the future. Best Regards, Raul