My Archive/과학기술 & IT 자료 Festo, Boeing' Loyal Wingman, NASA JPL Mars Helicopter leeesssong 2020. 7. 8. 18:58 출처#1. www.youtube.com/watch?v=mzS3YPLJNnE 출처#2. www.youtube.com/watch?v=W3xaGNiI-D0 출처#3. www.youtube.com/watch?v=D0nocO4paEQ