How to plot the Tsiolkovsky rocket equation for a multi stage rocket
23 views (last 30 days)
Show older comments
Christina Reid
on 9 Dec 2020
Commented: Christina Reid
on 2 Jan 2021
Hello! I am looking to plot the Tsiolkovsky rocket eqution as a funcion of time for a multi stage rocket. I found the total delta-V:
g0 = 9.81; % [m/s^2]
%Stage 1
Isp1 = 284; % Specific Impulse [sec]
bt1 = 56.5; % Burn Time [sec]
mp1 = 45400; % Propellant Mass [kg]
ms1 = 3600; % Structural Weight [kg]
Z1 = 0.93; % Prop mass fraction
C1 = Isp1*g0; %Exhaust Velocity
F1 = (mp1/bt1)*C1; % Thrust
%Stage 2
Isp2 = 308; % Specific Impulse [sec]
bt2 = 61; % Burn Time [sec]
mp2 = 24500; % Propellant Mass [kg]
ms2 = 3200; % Structural Weight [kg]
Z2 = 0.88; %Prop mass fraction
C2 = Isp2*g0;
F2 = (mp2/bt2)* C2;
%Stage 3
Isp3 = 300; % Specific Impulse [sec]
bt3 = 72; % Burn Time [sec]
mp3 = 7080; % Propellant Mass [kg]
ms3 = 650; % Structural Weight [kg]
Z3 = 0.92; %Prop mass fraction
C3 = Isp3*g0;
F3 = (mp3/bt3)* C3;
%Stage 4
Isp4 = 292; % Specific Impulse [sec]
bt4 = 84.1; % Burn Time [sec]
mp4 = 2010; % Propellant Mass [kg]
ms4 = 155; %Structural Weight [kg]
Z4 = 0.93; %Prop mass fraction
C4 = Isp4*g0
F4 = (mp4/bt4)* C4;
% Total
m_prop_0 = 78990; % kg
m_s_0 = 7605;
m_lift = 88432; % kg lift off mass
mpl = 1837; % kg
delta_V_1 = (g0*Isp1)*log(1/(1-Z1))
delta_V_2 = (g0*Isp2)*log(1/(1-Z2));
delta_V_3 = (g0*Isp3)*log(1/(1-Z3));
delta_V_4 = (g0*Isp4)*log(1/(1-Z4));
Delta_V_total = delta_V_1 + delta_V_2 + delta_V_3 + delta_V_4 % [m/s]
I am given the burn time for each sub-rocket, but I have no idea how to approach this next.
0 Comments
Accepted Answer
More Answers (0)
See Also
Categories
Find more on Quantum Chemistry in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!