Flettner - The Original Eco-Friendly Wind-Powered Ventilator

A short animation from Flettner, the original manufacturers of the Wind Powered Rotary Ventilator.
With time-proven design & performance, a reputation for toughness, versatility & sheer
reliability the Flettner ventilator is the natural choice where ventilation is required. Easy & quick to fit no matter what the application.
The principle is deceptively simple: mounted on a spindle, the extractor fan is driven by an air scoop which catches the air stream created by the motion of a vehicle or the prevailing breeze. Beneath the spinning air scoop are vanes which expel air, drawing stale air from below. The construction of the unit prevents the entry of rain, dust and downdrafts. Extraction capacity is remarkably effective and can be regulated by adjusting the internal shutter. Wind power means a quiet, totally maintenance-free performance with no electrical connections, no battery drain, no running costs and no distracting motor noise.
Flettner 2000: www.flettner.c...
Flettner TCX-2: www.flettner.c...
Flettner Slimline: www.flettner.c...