A DemoSat is a boilerplate spacecraft used to test a carrier rocket without risking a real satellite on the launch. They are most commonly flown on the maiden flights of rockets, but have also been flown on return-to-flight missions after launch failures. Defunct satellites from cancelled programmes may be flown as DemoSats, for example the maiden flight of the Soyuz-2 rocket placed an obsolete Zenit-8 satellite onto a sub-orbital trajectory in order to test the rocket's performance.[1]
![](http://upload.wikimedia.org/wikipedia/commons/thumb/3/37/Demosat_with_3CSat.jpg/220px-Demosat_with_3CSat.jpg)
See also
editReferences
edit- ^ Soyuz-ST - Encyclopedia Astronautica Archived 2010-01-07 at the Wayback Machine
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