A new video from Air Rescue Systems (ARS) demonstrates fluid dynamic hoisting during recent training with Cal Fire and its new Sikorsky S-70i Firehawk. Shown in the video is a turning hoist departure, in which the helicopter slowly initiates a turn to the “hoist side” of the aircraft while continuing a progressive climb. Initiating this slow, flat-floor, climbing turn during the hoist will bring the load plumb under the aircraft through centripetal force and reaction-pair forces, explained ARS president Bob Cockell.
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