14.11.2014 Views

Projeto Conceitual de Aeronaves de Transporte

Projeto Conceitual de Aeronaves de Transporte

Projeto Conceitual de Aeronaves de Transporte

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

t2=(sqrt(cl_long))/cd;<br />

t3=3600/ct;<br />

sqqwf =-rangem/(2*t1*t3*t2)+sqrt(masscruzi*9.81);<br />

massfin = sqqwf^2/9.81;<br />

mcombc = masscruzi-massfin;<br />

%<br />

function wefrac=wempty(arw,sw,MMO,W2lb,T0)<br />

% calculo da razao peso vazio/peso maximo <strong>de</strong> <strong>de</strong>colagem<br />

% Referencia: Raymer<br />

a=0.32;<br />

b=0.66;<br />

C1=-0.13;<br />

C2=0.30;<br />

C3=0.06;<br />

C4=-0.05;<br />

C5=0.05;<br />

%<br />

wefrac=a+b*((W2lb^C1)*(arw^C2)*((T0/W2lb)^C3)*((W2lb/sw)^C4)*MMO^C5);<br />

function atm=atmosfera(hp,isa)<br />

%<br />

% Purpose: standard atmosphere calculation<br />

% entradas (input):<br />

%---------------------------------------------------------------------<br />

% 1- hp: altitu<strong>de</strong> (pés)<br />

% 2- isa: <strong>de</strong>lta ISA<br />

%---------------------------------------------------------------------<br />

% Saidas (output)<br />

% atm(1): Temperatura ISA (K)<br />

% atm(2): Relação <strong>de</strong> Temperatura obtida pela temperatura padrao ao<br />

nivel do<br />

% mar<br />

% atm(3): Relação <strong>de</strong> pressões (pressão obtida / pressão ao nivel do<br />

mar)<br />

% atm(4): Relação <strong>de</strong> <strong>de</strong>nsida<strong>de</strong>s (<strong>de</strong>nsida<strong>de</strong> obtida/ <strong>de</strong>nsida<strong>de</strong> nivel<br />

do mar)<br />

% atm(5): Pressao (kPa)<br />

% atm(6): Densida<strong>de</strong> (kg/m3)<br />

% atm(7): Velocida<strong>de</strong> do som (m/s)<br />

% atm(8): Viscosity dinamica do ar (kg/(m.s))<br />

%---------------------------------------------------------------------<br />

% calculo da atmosfera padrao<br />

g = 9.80665; %gravidad<strong>de</strong><br />

temp = 288.15; %temperatura<br />

rho = 1.225; % <strong>de</strong>nsida<strong>de</strong><br />

pres = 101325; % pressao<br />

gama = 1.4; % cp/cv<br />

R = 29.26; % constante dos gases<br />

%<br />

if hp

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!