I have a problem with BTC 1.42a in that the flow rates are incorrect. BTC gives a mass flow rate of 4.500kg/s for the main engines but flight testing (DGIV) yields 5.910 kg/s as a real value. Same problem with BTC's mass flow rate for the hover and retro engines; they are incorrect. In essence BTC cannot give me an accurate burn if it has the wrong values in it's calculations. Is there a way edit the flow mass rate in BTC 1.42a? Thanks.
Flow rate and mass not correctly recognized by BTC 1.42a
- Thread starter othoudt
- Start date
tblaxland
O-F Administrator
Does it show correct values for other vessels? Perhaps it is related to the way the DG-IV manages its thrusters. Also, have you tried [ame="http://www.orbithangar.com/searchid.php?ID=1407"]BurnTimeCalcMFD (BTC) 1.5[/ame]?
Mass Flow Rates
The DG4 has a fuel display that shows the fuel consumption in kg/s so I can see that BTC 1.42a and BTC 1.5 have a different mass flow rate than what is displayed in the DG4 fuel display. As far as other vessels; I have not seen any with the fuel display as in the DG4 and I am too much of a newb to know of any other ways of finding fuel flow rates in other vessels if that is even possible (such as .cfg file or something simular)
The DG4 has a fuel display that shows the fuel consumption in kg/s so I can see that BTC 1.42a and BTC 1.5 have a different mass flow rate than what is displayed in the DG4 fuel display. As far as other vessels; I have not seen any with the fuel display as in the DG4 and I am too much of a newb to know of any other ways of finding fuel flow rates in other vessels if that is even possible (such as .cfg file or something simular)
tblaxland
O-F Administrator
Send him a PM? http://www.orbiter-forum.com/member.php?u=710. He logs on fairly frequently (last activity was less than a week ago).
kwan3217
Addon Developer
I think I've seen this problem with DGIV but only in one limited circumstance: The flow rate (and Isp) before starting the engine as shown in BTC is different from what is shown in the cockpit indicator after startup, but as soon as the engine lights, BTC has the correct value. This is because the DG plays games with propellant resource efficiency to simulate turbo mode and normal mode.
RisingFury
OBSP developer
I think it has something to do with the turbo pumps.
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