For inaccessible, remote large-area avalanche starting zones. Protection of traffic lines and important ski runs.

- Avalanche tower; in the background the Matterhorn, Zermatt

- Avalanche tower with dropped charge just before detonation

- Wyssen avalanche tower magazine ready for take-off
Construction and function
- The tower is permanently installed in the avalanche starting zone.
- A magazine with 12 explosive charges of up to 5 kg is set up on the tower.
- The operation is carried out with software on a PC.
- Coded radio signals are sent to the controls in the magazine
to trigger off the process. - A charge is then dropped by means of a triggering mechanism and remains hanging on its retaining line over the snow.
- During the drop, the charge's dual ignition is pyrotechnically activated.
- The detonation takes place after a time delay.
- The blasting height over the snow can be varied by the length of the retaining line.
Advantages
- Blasting above the snow with larger charges creates the maximum effective range (up to 260 m in diameter)
- The magazine is brought back to the station by helicopter for reloading, servicing and storage during the summer
- The pilot can put the magazine on the tower or lift it off using the special helicopter catch and the insertion aid on the magazine without needing a flight assistant.
- Weather independent and rapid release.
- No personnel in the avalanche danger zone.
- The explosive creates a high-frequency N-shaped pressure wave for the optimum effect.
- Comparatively low installation expenditure and low impact on nature.
- Compact and tightly sealed magazine: all critical and moving parts are well protected; the opening for the charge drop is very small and is automatically de-iced.
- No vulnerable feed lines are necessary; energy is supplied by solar cells on the magazine.
- Safe and simple preparation of the charges is possible in the building.
- No uncontrolled sliding of the ignited charges is possible.
- System integration possible with snow measuring stations for decision-making assistance.