I have written some tutorials on avionics component isolation which may be downloaded at: avionics_iso.pdf six_dof_isolated.pdf * * * The Matlab GUI scripts are given in the GUI package at: Vibrationdata Matlab GUI Package The function is accessed via: Miscellaneous > Structural Dynamics > Spring-Mass… Read more
The plate is aluminum, 0.063 inch thick. The fixed edge length is 6 inch. The free edge length is 4 inch. The vibration mode was calculated via the Rayleigh method using an assumed displacement function, as carried out via Matlab script: fixed_free_fixed_free_plate.m The method is… Read more
FreeMat is an open-source software environment similar to Matlab. The latest version is 4.0, released 2009-10-09. I tried FreeMat with one of my Matlab scripts which prompts the user for keyboard input. Unfortunately, this resulted in an error: In /usr/local/share/FreeMat-4.0/toolbox/io/input.m(input) at line 37 In /home/jarle/freemat/inndata.m(inndata)… Read more
The Python scripting program, ver 2.7.2, can be freely downloaded from: http://www.python.org/download/ Programmers will also need to install libraries such as NumPy, SciPy and matplotlib, particularly for science and engineering programming. These libraries are also freely available, but their proper installation and integration with Python is tricky. As… Read more
I recently had a need to compare sound pressure levels (SPLs) on the inside of payload fairings for a number of launch vehicles. These levels are readily available in online user’s guide for vehicles such as Atlas, Delta, Falcon, Ariane and others. The most critical… Read more