Chang Shen
Location: Huntsville, AL United States
Company: nasa
Profession: Engineer/Designer
Number of times previously entering contest: never
For managing CAD data chang's company uses: PTC Windchill
2011 Entries
| Date | Title | Category | Views | Votes |
|---|---|---|---|---|
| 06/24 | Reduce Impact of Railway Rail Thermal Gap | Machinery & Equipment | 4895 | 0 |
| 03/18 | Intelligent Traffic Control System | Transportation | 4103 | 1 |