Simulating a APU EGT indicator with Fs bus

[Mats_J 2]

Hi guys>it won't affect your envelope because it always stays in idle.Actually I was thinking about this idle thing. There is an increase in fuel consumption depending on the load. With the generator online it draws about 225 lbs/h, with 1 pack it's 280 lbs/h and with 2 packs it's 226 lbs/h. (Figures are for the NG APU)Here's the idea. What if you could somehow connect the packs, and generator switches to the throttle control of the APU. This way we could simulate different loads on the APU as well!Wadaya think?

[Guest Erups]

>increase in fuel consumption depending on the load. With the>generator online it draws about 225 lbs/h, with 1 pack it's>280 lbs/h and with 2 packs it's 226 lbs/h. (Figures are for>the NG APU)I think the figure for 2 packs is wrong :)Maybe 326lbs/h?>Here's the idea. What if you could somehow connect the packs,>and generator switches to the throttle control of the APU.>This way we could simulate different loads on the APU as>well!Hmm....I think it is possible, you can do it this way:assign your pack switches the function to increase throttle.Talking FSBUS, you simply assign eah swithc a double function (on ON and on OFF) to sum or detract a constant value to engine 3 throttle.These specific numerical values should be found experimentally, in order to give the best result.That way when you switch packs on, the throttle increases, and the fuel flow grows, and the reverse when you switch them off.What do you think?