R44 Clipper II
The R44 Waterbird helicopter is an additional Thunderbird helicopter suitable for water operation.
Fixed pontoon: Suitable for Waterbird I and Waterbird II helicopters, the configuration has been inflated, increasing the weight of the helicopter by about 23kg and reducing the speed of navigation by about 19 km/h.
Pop-up pontoon: Only applicable to Shuijiran II helicopters, designed to respond to emergencies, and can be activated within 2-3 seconds. The pressurized helium gas in the helium cylinder located under the left front seat of the aircraft can be released by means of a lever mounted on the collective lever. The control lever uses a mechanical pull cable to activate the inflatable buoy, rather than relying on electrical activation. The pontoons can be activated at flight speeds up to 148 km/h. The pop-up buoy has the same buoyancy as the fixed buoy. When not inflated, the buoy is compressed in the air bag and placed along the sled tube of the landing gear. This will minimize the impact on the speed of the helicopter and will not hinder the entry and exit of the helicopter. The pop-up buoy adds about 30kg to the weight of the helicopter.
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