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Atmosculator is a freeware Mac OS X application, written using Cocoa & Objective-C, that calculates key properties of the Earth's atmosphere as a function of altitude using the 1976 Standard Atmosphere Model. It can be used to determine the pressure, temperature, density, viscosity and other parameters up to an altitude of 278,385 feet (84.852 km). The 1976 model is the latest of a number of versions developed jointly by NOAA, NASA and the USAF. The complete model includes properties at even higher altitudes, but these regions are more complex and are not included here.

Atmosculator also provides the option of more...

What's New

Version 2.04:
  • Application will now expire gracefully; it will warn of pending expiration once per day starting 28 days from expiration, and when the expiration date has been passed, the user will have the option to either quit or continue
  • Minor changes to Help


Mac OS X 10.2 or later

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Atmosculator User Discussion

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This is a great tool for educators and others just interested in the properties of the atmosphere. Although what it does could be communicated well in a more graphical way (sometimes, though, people can't interpret graphs well and then the usefulness is gone), it allows the user to interact with the numerical values and see the results. I especially like the speed of sound part - great when teaching about Mach values. Atmosculator could do with a preference setting to use SI units with just one click and an alternative input method (maybe sliders) that allows you to step the values up with clicks. It's still a great program for using but hiding equations.

Reply1 reply
Version 2.02
Juan Falgueras Cano

It is a pity that this very interesting educational item insists in slugs(?), feet and other non international measurement units not offering at least a quick way for changing them all to the standard, that on the other hand are always used in the explanations as we all have learned in the schools. Also the output number format (engineering with things like 1.3e2) could be much better (130).

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> 5 1


Current Version (2.x)


Downloads 2,320
Version Downloads 850
License Free
Date 29 Jan 2008
Platform OS X / PPC 32
Price Free
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