An ABB variable speed drive system is to power the giant fan that generates subsonic wind speeds at Boeing's flagship wind tunnel in Philadelphia.

ABB的一个变速驱动系统正在为波音公司在费城的旗舰风洞的大型风扇提供动力，以制造出次音速风速。

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The ACS 5000 variable speed drive system enables Boeing to run the fan in adjustable speed mode or at constant speed, depending on the protocols and parameters of each test.

ACS 5000变速驱动系统使得波音公司可以根据每个测试的规程和参数，自由设定可调速度模式或者恒速模式。

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A water-cooling system consists of the engine water jacket, thermostat, water pump, radiator, radiator cap, fan, fan drive belt and necessary hoses.

水冷系统由发动机水套、节温器、水泵、散热器(水箱)、散热器盖、风扇、风扇驱动皮带和必要的软管组成。

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The addition of the Fan Drive Gear System added only seven moving parts, but the 18-inch-diameter gearbox had to be engineered to withstand thousands of high-stress takeoffs and landings without maintenance.

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The G-DRIVE solution features fast 7, 200 RPM drives and a fan-less cooling system for a quiet operation.

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