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47 lines
926 B
Matlab
47 lines
926 B
Matlab
clear all; close all; clc;
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g = -9.81;
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mass = 1.2;
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mdot = 0.0182;
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dt = 0.001;
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vprev = 0;
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hprev = 0;
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i = 1;
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for t = 0 : dt : 3.45
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m = mass - mdot*t;
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if t < 0.148
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thrust = 0;
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elseif (t > 0.147) && (t < 0.419)
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thrust = 65.165.*t - 2.3921;
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elseif (t > 0.420) && (t < 3.382)
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thrust = 0.8932*t^6 - 11.609*t^5 + 60.739*t^4 - 162.99*t^3 ...
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+ 235.6*t^2 - 174.43*t + 67.17;
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elseif (t > 3.381) && (t < 3.451)
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thrust = -195.78*t + 675.11;
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elseif t > 3.45
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thrust = 0;
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end
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acceleration(i) = (thrust / mass) + g;
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velocity(i) = acceleration(i) * dt + vprev;
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height(i) = velocity(i) * dt + hprev;
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vprev = velocity(i);
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hprev = height(i);
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i = i + 1;
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end
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figure(1)
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hold on
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t = 0 : dt : 3.45;
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plot(t + 0.7712, velocity - max(velocity))
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t1 = 0 : 0.001 : 0.7712;
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v = -9.81*t1;
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plot(t1, v)
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figure(2)
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h = 0.5*-9.81*t1.^2
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plot(t1, h)
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