FYFT E-series unmanned blimps are Chinese UAVs developed by Qingdao Co., Ltd. Fei-Yu (meaning Flying Universe) Aviation Science and Technology Co., Ltd. (FYFT, 青岛飞宇有限公司), and these unmanned blimps are often named after their respective length. For example: if an E6 series blimp is 7 meter long, then it is named E6-700, because 7 meter is equal to 700 milimeter.
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E-series unmanned blimp
E-series unmanned blimps are specifically developed by FYFT for engineering and industrial applications, such as setting up power line. The letter E stands for Engineering. The E-series unmanned blimp consists of two sub-series, the E6 and E7 sub-series.
i-series unmanned blimps
In addition to E-series unmanned blimps, FYFT also developed i-series unmanned blimps, which are primarily used as indoor advertise platforms but they can be used as temporary surveillance platform in velodromes. The letter “i” stands for “indoor”. In contrary to most FYFT unmanned blimps, all of the i-series unmanned blimps are electrically powered.