Project_2_standard atmosphere (1)

1 MAE 251, Aerospace Vehicle Performance- Project 2 Due: 5 November 23:45 ( not 23:55 ) , submit on Matlab Grader and Moodle 1. Enroll in the Matlab Grader system for the MAE 251 course by accepting the invitation from the instructor. This invitation might have gone to your spam folder. This is required. Without Grader, you will not be able to complete this assignment. This will come out in the near future and I ’ ll give an update when available. 2. Write a Matlab function to calculate atmospheric properties at any given set of altitudes (either geometric or geopotential). Your function should conform to the following: function [h, hG, T, p, rho, a_inf, mu] = simple_atmos(h, option) where the inputs are ● ‘option’, which has to be a single number, either 0 or 1, with 0 to be used for geometric and 1 for geopotential ● ‘h’, is a column vector containing the altitudes in meters at which the atmospheric properties are to be calculated. Your program should work for 0 m < (h or h g ) < 100,000. Let us assume that the input ‘h’ has N numbers in a column. So ‘h’ is of size Nx1. The outputs are seven column vectors of size Nx1 each: (1) geopotential altitude , h, in m, (2) geometric altitude, hG, in m, (3) temperature, T, in K, (4) pressure, p, in N/m 2 , (5) density, rho, in kg/m 3 , (6) speed of sound, a_inf, in m/s, and (7) coefficient of dynamic viscosity, mu, in SI units The temperature distribution (given in Figure 3.4 in the book) and sea-level properties of p s = 1.01325 x 10 5 N/m 2 , ρ s = 1.2250 kg/m 3 , and T s = 288.16 K. Use g 0 = 9.80665 m/s 2 and radius of earth, r = 6.356766 x 10 6 m are provided in the template code. Values for other constants are also given in the template code. Your submission for this problem will be the program submitted through Grader, which will allow you to test your code by comparing results from your code with the results for the instructor’s code for several test cases. Grader notes: a. Use the Matlab template code provided by the instructor and develop your Matlab code on your computer (outside the Grader environment). b. NOTE: Although you are allowed to change any portion of the code [except the function definition given by “function [h, hG, T, p, rho, a_inf, mu] = simple_atmos(h, option)” ], you only really need to replace the portions marked using “%%%%%%% WRITE YOUR OWN CODE %%%%%%%%%” With your own code. You don’t need to change other portions of the code.