FYFT P-series unmanned blimp
FYFT P-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 named after their respective length. For example: if an A1 series blimp is 11 meter long, then it is named A1-1100, because 11 meter is equal to 1100 millimeter. P-series unmanned blimps are intend for law enforcement applications, and P stands for Police. The greatest difference between P-series and other unmanned blimps for civilian use such as S-series unmanned blimps for aerial survey is that for law enforcement application, data link is added to provide real-time or near real-time transmission of information gathered so police can respond in a timely manner, as opposed to civilian versions where information is downloaded and evaluated after the UAVs have landed.

P1-series unmanned blimps
P1 series unmanned blimps are FYFT-developed blimps with a single gasoline-powered tractor engine propelled by a two-blade propeller.

P2-series unmanned blimps
P2 series unmanned blimps are FYFT-developed blimps with a single gasoline-powered pusher engine propelled by a two-blade propeller.

P3-series unmanned blimps
P3-series unmanned blimps are FYFT-developed blimps with twin gasoline-powered engines, one in the front, and one aft.

P4-series unmanned blimps
P4-series unmanned blimps are FYFT-developed blimps with twin gasoline-powered engines propelled by a two ducted fans.

P5-series unmanned blimps
P5-series unmanned blimps are FYFT-developed blimps with twin gasoline-powered engines propelled by a two adjustable ducted fans.

P6-series unmanned blimps
P6-series unmanned blimps are FYFT-developed blimps with twin gasoline-powered engines propelled by a two adjustable ducted fans, and it is a larger cousin of earlier P5-series UAV from which it is developed from.

P7-series unmanned blimps
P7-series unmanned blimps are FYFT-developed blimps with a single gasoline-powered engines propelled by a single adjustable ducted fan.