This program lets you study how the properties of the atmosphere change with altitude. You can study the atmosphere of either the Earth or Mars. The equations used in this program are taken from the ICAO standard day model for the Earth and from some curve fits of the Martian atmosphere gathered by the Global Surveyor spacecraft. Using the airplane graphic you can select an altitude, or you can type an altitude into the input box.

The program instantly outputs a selected property and displays the local temperature and pressure on gages. You can output the temperature, pressure, density, local speed of sound, Mach number for specified velocity, or the ratio of aircraft lift to the lift on Earth at sea level. Input and output can be given in either English or metric units.

The source code can be found here

This sofware was provided by:

NASA Glenn Research Center, MS 5-11
21000 Brookpark Rd.
Cleveland, Ohio 44135
e-mail: benson@grc.nasa.gov
phone: (216)-433-5920


Original location:http://www.grc.nasa.gov/WWW/K-12/InteractProgs/index.htm

This software is in the Public Domain. It may be freely copied and used in non-commercial products, assuming proper credit to the author is given. IT MAY NOT BE RESOLD. If you want to use the software for commercial products, contact the author.

No copyright is claimed in the United States under Title 17, U.S. Code. This software is provided "as is" without any warranty of any kind, either expressed, implied, or statutory, including but not limited to, any warranty that the software will conform to specifications, any implied warranties of merchantability, fitness for a particular purpose, and freedom from infringement, and any warranty that the documentation will conform to the program, or any warranty that the software will be error free.

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