Conceptual Design of the Wide-Body PIS-413 WEIGHT ESTIMATION 3 Weight Estimation 3.1 Crew and Passenger Weight A designed capacity of 400 seats for the full economy class version includes 12 flight crews ifeach stewardess serves 40 passengers.Take the reference weight as gokg, the weight of flight crew (include luggage)is Ww=k*Ne+B=12×90=1080kg (3.1) The weight of passengers and luggage is W=k*N。=400×90=36000kg (3.2) Thus the total weight can be calculated as WPLC =WGREW +WR.=37080kg (3.3) 3.2 Final Weight Proportion A typical flight envelope is consisted of 12 parts,which are listed in Table 5. Table 5.Flight mission profile. Number Mission profile Weight proportion (Wi/Wi1) 1 Start and slide 0.98 2 Takeoff 0.995 3 Climb 0.98 ? Cruise 5 Descend 0.99 6 Enter and Landing 0.992 7 Slide 0.99 8 Mistake Enter 0.99 9 Climb 0.98 10 Divert 11 Descend 0.99 4Conceptual Design of the Wide-Body PIS-413 WEIGHT ESTIMATION 4 3 Weight Estimation 3.1 Crew and Passenger Weight A designed capacity of 400 seats for the full economy class version includes 12 flight crews if each stewardess serves 40 passengers. Take the reference weight as 90kg, the weight of flight crew (include luggage) is      * 12 90 1080 W k N kg CREW fc fa (3.1) The weight of passengers and luggage is     * 400 90 36000 W k N kg PL p (3.2) Thus the total weight can be calculated as   37080 W W W kg PLC CREW PL (3.3) 3.2 Final Weight Proportion A typical flight envelope is consisted of 12 parts, which are listed in Table 5. Table 5. Flight mission profile. Number Mission profile Weight proportion（Wi/Wi-1） 1 Start and slide 0.98 2 Takeoff 0.995 3 Climb 0.98 4 Cruise 5 Descend 0.99 6 Enter and Landing 0.992 7 Slide 0.99 8 Mistake Enter 0.99 9 Climb 0.98 10 Divert 11 Descend 0.99