Speed Calculation |
Post Reply |
Author | |
Ghost
Bolt Sorter Joined: Apr/09/2016 Status: Offline Points: 20 |
Post Options
Thanks(0)
Posted: Aug/30/2016 at 10:31pm |
Does anyone have any input into this MATLAB code for max vehicle speed? How would you incorporate CVT and gearbox ratio into this equation. I found this on a teams report, I do not take ownership of this code.
% This Program will allow for a maximum vehicle velocity to be calculated % from a number of given inputs % Maximum Power at the rear wheels (assuming 85% efficient driveline) Pmax = 550*.84*(8.9); % (ft*lb/s) % Frontal Car Area A = 2016/144; % sq ft % Drag Coefficient Cd = 1.08; % Density of Air at standard conditions rho = 2.38 * (10^(-3)); %slugs/(cubic foot) % Vehicle weight W = 420; %lbf % Coefficient of Rolling Resistance Crr = .068; % Maximum Vehicle Velocity (Just an initialization) Vmax = 0; % ft/s roots = 0; while (1) RHS = (1/2)*(Cd)*(A)*(rho)*(Vmax^3) + (Crr*W)*Vmax; eapprox = abs((Pmax - RHS)/Pmax)*100; if eapprox < .1; fprintf('The maximum attainable vehicle velocity is approximately\n') fprintf(' %.4f mph \n',Vmax*(3600/5280)) break else Vmax = Vmax + .01; end end |
|
Post Reply | |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |