ALV X-1
| ATK ALV X-1 Launch Vehicle Pathfinder | |
| Function | Sub-Orbital Test Vehicle | 
|---|---|
| Manufacturer | Alliant Techsystems | 
| Country of origin | United States | 
| Size | |
| Height | 54 feet (16 m) | 
| Diameter | 5 feet (1.5 m) | 
| Mass | Unknown | 
| Stages | 2 | 
| Launch history | |
| Status | Inactive | 
| Launch sites | Mid-Atlantic Regional Spaceport | 
| Total launches | 1 | 
| Failure(s) | 1 | 
ALV X-1 was the first and only flight of the ATK Launch Vehicle (ALV) sounding rocket developed by Alliant Techsystems. The launch occurred from LP-0B at the Mid-Atlantic Regional Spaceport (MARS) at NASA's Wallops Flight Facility. This mission carried the SOAREX-VI and Hy-BoLT experiments as payloads when it launched at 09:10 GMT on August 22, 2008. The vehicle was terminated 20 seconds into flight after veering too far off course.