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Questions on DII Engines

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galileo:
Hi everybody, :stupid:

could anybody answer me some questions on the DII engines?

:help: :help: :help:

1) How exactly does the air intake work?
When is the exact time to turn it on/off when doing a manual ascend or when taking-off form a
planet without an atmosphere or with a low density atmosphere? How does it change the engine's
performance (fuel flow, thrust increase, any detailed data available?) and in what way do those
parameters depend on density/atmospheric pressure? Unfortunatelly there is no reference on that
topic in the DII manual.

2) Same questions on the tubo pump. Is it for example more efficient to take off from Moon without
the turbo pump?

3) There are 3 switches on the DII main panel controlling thrust vectoring (I think they were
already there on the original DI panel). What is the effect of the "comp" setting of the yaw switch?
(is there any, or is it just a fake switch by now?)
And what does the lower position of the switch read (is it CNT, COT,... can't make it out), and what
does this abbreviation stand for?

:help: :help: :help:
Thanks in advance
Galileo

DanSteph:
galileo wrote:
> 1) How exactly does the air intake work?
> When is the exact time to turn it on/off when doing a manual
> ascend or when taking-off form a
> planet without an atmosphere or with a low density atmosphere?
> How does it change the engine's
> performance (fuel flow, thrust increase, any detailed data
> available?) and in what way do those
> parameters depend on density/atmospheric pressure?
> Unfortunatelly there is no reference on that
> topic in the DII manual.
>
> 2) Same questions on the tubo pump. Is it for example more
> efficient to take off from Moon without
> the turbo pump?
>
> 3) There are 3 switches on the DII main panel controlling
> thrust vectoring (I think they were
> already there on the original DI panel). What is the effect of
> the "comp" setting of the yaw switch?
> (is there any, or is it just a fake switch by now?)
> And what does the lower position of the switch read (is it CNT,
> COT,... can't make it out), and what
> does this abbreviation stand for?


Hello Galileo,

1- They lower the consumption of the fuel while the oxygen is taken from outside instead
    of tank. About time to close it I don't recall exactly (I'm at work) but you can watch
    the consumption indicator at about 20k alt if you switch it you will see that there is almost
    no change if you switch the air intake , it's time to close it.

2- Turbo pump give you an extra trhust but at the expense of much fuel, it must be used
     typically for the initial climb while the less time you expand near earth , less you will
     expense fuel. for longer burn later when you are already in orbit you can leave it off,
    your burn will take longer but you will lower your fuel consumption.

3- About the switch they control the thrust vectoring if you are on "Comp" and "auto"
    the computer will try to compensate with thrust vectoring a loss of one engine.
    you have another pos manual when you can control yourself with the slider.


Dan

galileo:
Thank you so much, that's  very helpful. :gift:

I will go and try everything out immediately!

 :beer:
Galileo

lone_marauder:
:wonder:

Quick note.  Auto isn't very auto.  If you don't turn this thing off when you need to, it will
drastically consume fuel.  Turbo pump also seems to do nothing when clear of the atmosphere.

DanSteph:
I agree that auto isn't very "auto" you still must shut it down otherwise
it will increase the fuel comsuption if there isn't enough pressure
howewer Turbo pump even clear of atmosphere increase the thrust.

Dan

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