# Expert Guide Required for plotting this array

1 ビュー (過去 30 日間)
Muhammad Ali Shah 2022 年 1 月 15 日
コメント済み: Muhammad Ali Shah 2022 年 1 月 16 日
Hi guys! I am trying to plot a curve for some parameter 'ROC' with height 'h'. I've got air density for each height I want to use in an array;
Using this array, I calculated ROC for each height. Now I don't know how to plot this ROC with Heights (in ft). Like how can I assign my densities for each height because I need a plot for ROC versue height. Here's my code
clc %ROC AND VROCmax with altitude
clear all
W = 535500;
CD_not = 0.029;
S=3892;
LD=14;
p = [0.002377 0.002048 0.001756 0.001496 0.001267 0.001066 0.000891 0.000738 0.000587];
T = (142000).*((p./0.002377).^0.6)
Z = 1 + ((1+(3./((LD.^2).*((T/W).^2)))).^0.5)
ROC = ((((W/S).*Z)./(3.*p.*CD_not)).^0.5).*((T/W).^1.5).*(1-(Z/6)-(3./(2.*((T/W).^2).*(LD.^2).*Z)))
V = ((((T./W).*(W/S).*Z)/(3.*p.*CD_not)).^0.5)
h = [0 5000 10000 15000 20000 25000 30000 35000 40000] = [p] % 0 implies sea level with density 0.002377, 5000 implies 5000ft with density 0.002048 etc
Incorrect use of '=' operator. Assign a value to a variable using '=' and compare values for equality using '=='.
plot (ROC,h)
An expert guide is welcomed. Thanks!

サインインしてコメントする。

### 採用された回答

Cris LaPierre 2022 年 1 月 16 日
You plotting code is fine. The issue is the syntax error in the line before your plot command. I'm not sure what the '= [p]' is supposed to do, so I removed it. Now your code produces a plot with ROC on the x axis and h on the y axis.
clc %ROC AND VROCmax with altitude
clear all
W = 535500;
CD_not = 0.029;
S=3892;
LD=14;
p = [0.002377 0.002048 0.001756 0.001496 0.001267 0.001066 0.000891 0.000738 0.000587];
T = (142000).*((p./0.002377).^0.6);
Z = 1 + ((1+(3./((LD.^2).*((T/W).^2)))).^0.5);
ROC = ((((W/S).*Z)./(3.*p.*CD_not)).^0.5).*((T/W).^1.5).*(1-(Z/6)-(3./(2.*((T/W).^2).*(LD.^2).*Z)));
V = ((((T./W).*(W/S).*Z)/(3.*p.*CD_not)).^0.5);
h = [0 5000 10000 15000 20000 25000 30000 35000 40000]; % 0 implies sea level with density 0.002377, 5000 implies 5000ft with density 0.002048 etc
plot (ROC,h)
##### 1 件のコメント表示非表示 なし
Muhammad Ali Shah 2022 年 1 月 16 日
Thank You!

サインインしてコメントする。

### Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by