Bonus video: Why do helicopters have string on the windscreen?
Added 2019-09-11 13:32:58 +0000 UTCI asked Polina why all helicopters have a piece of string attached to the outside of the windscreen. She explained why and then gave me a run through all the other instruments.
This is the bonus video from my main-channel video "Can we film a stroboscopic helicopter?
https://www.youtube.com/watch?v=2SgG99QKLFE
![개성인쥬스[pingkypen]](https://samukata.com/istorage/106895.jpg)
