Helicopter wire strike protection system. 2:34 video:
https://www.youtube.com/watch?v=rm6MwIdY4TA
Previously:
https://www.homemadetools.net/forum/...124#post138208
https://www.homemadetools.net/forum/...2486#post76456
https://www.homemadetools.net/forum/...687#post136654
https://www.homemadetools.net/forum/...381#post131389