Brabazon/FS9/FSNav Assistance

[Tom Clayton]

I've been thoroughly enjoying the Brabazon in my FS9 since its release, but there's one thing that would make things perfect. I'd like to add it to my list of aircraft in FSNav, but I need some realistic #'s for fuel consumtion, speeds, etc. Any and all help would be most appreciated!

[RAF_Quantum]

Hi,

The easiest way is to do some test flights. Load up with a typical fuel load and payload and make a note of the fuel on departure. Do a timed climb to your desired cruise altitude and then when stabilised in the cruise hit pause and go see how much fuel you used from taxi to top of climb. Divide by the minutes taken to top of climb and x 60 for an average lbs/hr or kgs/hr for your climb burn. Having taken a note of how much fuel you have left, unpause and do a timed cruise, say 15 mins and pause again. Calculate fuel used and then work out how much an hour that is. When ready unpause and start a descent to say 3000ft and then pause again. Same scenario, work out your fuel/hr for the descent to 3000ft. That figure should hold reasonably for an approach as well, you may need to fine tune it. So you should now have a quick and dirty climb/cruise/descent fuel figure to input to FSNav for the fuel. For the speeds, use whatever you are seeing averaged say for the climb, what it is for the cruise and averaged for the descent. Try those figures in FSNav for starters and tweak accordingly with a few flights experience.

Regards

John

[Tom Clayton]

Thanks. If I can find some time to do a longer flight, I'll do that. In the meantime, if any of the gurus around here have something close, I won't turn away the help!