Thanks a lot,
So I understand that during the flight, C.G moves AFT as fuel get's burned.
1) So does the plane tend to pitch-up as you burn fuel? But how do you reduce drag? If you pitch up, you reduce drag!
2) Sorry, what does MAC mean? Could you please explain?
Ok, the FCMC needs the fuel's volume and density to get GW.
But I didn't understand how is FOB calculated.
3) You know the weight of fuel. Why does it take fuel used during engine start??? What are the 2 calculated figures? I had XXX lbs at departure. Now, I know my fuel quantity by knowing the fuel density, no? Confused!
4) The ZFWCG is given by the pilot. But does the plane calculate it again (and changes the value)? Like for fuel: when you enter "block", the FMGS can automatically change it If it wrong.
5) The FWD CG is also controlled by FE?