Software Design (CSC-223 97F)

[News] [Basics] [Syllabus] [Outlines] [Assignments] [Studies] [Examples] [Readings] [Projects] [API]

Picture of PhobosThe Failed Phobos Missions to Mars


Two Soviet Missions to Mars failed and two craft were lost. The first failure was blamed on human error. The second was blamed on computer failure. Both were likely caused by design flaws.



Phobos I was launched on July 7, 1988 and Phobos II was launched two weeks later. Phobos I operated normally until routine attempts at communication failed on September 2, 1988. It appeared as thought the craft had lost power. Phobos 2 continued to operate normally and successfully entered orbit of Mars. Yet, while preparing to launch mobile landers to the surface it lost contact on March 27, 1989.

What went wrong?


[News] [Basics] [Syllabus] [Outlines] [Assignments] [Studies] [Examples] [Readings] [Projects] [API]

Disclaimer Often, these pages were created "on the fly" with little, if any, proofreading. Any or all of the information on the pages may be incorrect. Please contact me if you notice errors.

Source text written by Evan Schnell and Robert Reasoner.

Source text last modified Fri Oct. 27. 12:31:49 1997.

This page generated on Fri Oct 17 09:04:48 1997 by SamR's Site Suite.

Contact our webmaster at