Projeto Conceitual de Aeronaves de Transporte

%3) MAINTANENCE MATERIALS COST FOR AIRPLANE -> Cmat_ap (PAG 150)
%ENGINE PRICE
CEF
= (3.10/3.02); %FATOR DE CORRECAO DO PRECO
EP1989 = (10^(2.3044 + 0.8858 * (log10(Tto_Ne)))); % [USD] PAG
65 APPENDIX B4 EQ B10 PAG 351
EP = CEF * EP1989; %[1992]
%AIRPLANE PRICE
AEP1989 = (10^(3.3191 + 0.8043 * (log10(MTOW * kg2lb)))); %
[USD] PAG 89 APPENDIX A9 EQ A12 PAG 331
AEP = CEF * AEP1989; %[1992]
%AIRFRAME PRICE
AFP
= AEP - NEng * (EP); % [USD]
if MTOW * kg2lb >= 10000 % FIGURE 5.8 PAG 126
ATF = 1.0;
elseif MTOW * kg2lb < 10000 && MTOW * lb < 5000
ATF = 0.5;
else
ATF = 0.25;
end
CEFy = 1.0; % PAG 150
Cmat_apbhr = 30 * CEFy * ATF + 0.79*1e-5 * AFP; % PAG 150 FIGURE
5.8 PAG 126
Cmat_ap = fnrev * Cmat_apbhr / vbl; %[USD/NM] EQ 5.37 PAG 120
%4) MAINTANENCE MATERIALS COST FOR ENGINE -> Cmat_eng (PAG 150)
KHem = 0.021 * (Hem/100) + 0.769; % FIGURE 5.11 PAG 129
ESPPF = 1.5; % ENGINE SPARE PARTS PRICE PAG 133
Cmat_engblhr = (5.43*1e-5 * EP * ESPPF - 0.47)/KHem; % FIGURE
5.9 PAG 127
Cmat_eng = fnrev * 1.3 * NEng * Cmat_engblhr / vbl; %
[USD/NM] EQ 5.38 PAG 125
%5) APPLIED MAINTENANCE BURDEN COST -> Camb (PAG 151)
famb_lab = 1.2 ; % OVERHEAD DISTRIBUTION FACTOR LABOUR COST PAG
129 -> MIDDLE VALUE
famb_mat = 0.55; % OVERHEAD DISTRIBUTION FACTOR MATERIAL COST
PAG 129 -> MIDDLE VALUE
Camb = fnrev * (famb_lab * (MHRmap_bl * Rlap + NEng *
MHRmeng_bl * Rleng) + ...
famb_mat * (Cmat_apbhr + NEng * Cmat_engblhr)) / vbl; %
[USD/NM] EQ 5.39 PAG 125
% TOTAL MAINTENANCE COST
DOCmaint = Clab_ap + Clab_eng + Cmat_ap + Cmat_eng + Camb; %
[USD/NM] PAG 151
%==============================%
% DOC DEPRECIATION %
%==============================%
% (PAG 130)
% 1) AIRPLANE DEPRECIATION COST -> Cdap (PAG 151)
fdap
= 0.85; % AIRFRAME DEPRECIATION FACTOR TABELA 5.7 PAG
134
DPap = 10; % AIRPLANE DEPRECIATION PERIOD TABELA 5.7 PAG 134
ASP
= 2670000; % [USD] PAG 151 AVIONICS SYSTEM PRICE
APPENDIX C THE SAME VALUE WHICH WAS USED IN THE EXAMPLE