Anti-rotation cord
The anti-rotation leash (ARL, also called anti-rotation cord ) is an aid in (mountain) air rescue . During rope rescue procedures (winch rescue or rescue rope), it is used by an assistant to hold the rescue bag with the patient lying horizontally on the ground. Thus, it is prevented that in the hover flight of the rotating downdraft pulse ( downwash ) of the main rotor enables the rescue bag in rotation.
The anti-rotation line is released and thrown off by the air rescuer before the transition to forward flight. In the event of problems, a predetermined breaking point is used, which prevents the rescue bag and thus indirectly the helicopter from being tied to the ground. However, in order to prevent the rescue bag from rotating with the anti-rotation cord, the rescuer must be able to maintain a certain lateral distance to the rescue bag on the ground. This is often only possible with great difficulty at spatially limited deployment sites, such as those found primarily in the mountains. This is why the anti-rotation line cannot be used to good effect in many rope rescues.
Individual evidence
- ↑ Matthias Ruppert, Jochen Hinkelbein (Ed.): Emergency Medicine in Extreme Situations , Medizinisch Wissenschaftliche Verlagsgesellschaft , 2018, ISBN 9783954663446 p. 172 [1]
- ↑ Pit Schubert : Safety and Risk in Rock and Ice: Volume 2 , Bergverlag Rother , 2018, ISBN 9783763360185 , p. 273 [2]