The Antares Solid Rocket Motor was an upper stage engine that was used on the United States’ Scout launch vehicle.
![Antares IIA Technical Drawing [SC1]](https://rocketreference.com/wp-content/uploads/2019/02/Antares-IIA-Technical-Drawing-SC1-1024x429.png)
Antares IIA Technical Drawing [SC1] 
Antares IIA X-259 at the Smithsonian Air & Space Museum ![Antares IIB Thrust Curve [SC1]](https://rocketreference.com/wp-content/uploads/2019/02/Antares-IIB-Thrust-Curve-SC1.png)
Antares IIB Thrust Curve [SC1] ![Antares IIIA Technical Drawing [SC1]](https://rocketreference.com/wp-content/uploads/2019/02/Antares-IIIA-Technical-Drawing-SC1-1024x403.png)
Antares IIIA Technical Drawing [SC1]