BVE UAV

BVE UAVs are Chinese UAVs developed by Beijing BVE Low Altitude Spatial Technology Co., Ltd. (BVE, 北京必威易低空空间技术有限公司), and all of them are unmanned helicopters. As of 2013, a total of four have been publicized.

Shark-120
Shark-120 is a gasoline-powered unmanned helicopter of conventional helicopter layout. The landing gear system consists of a pair of skids and the UAV is fully autonomous. Specification:
 * Payload: 30 kg
 * Max take-off weight: 120 kg
 * Endurance: 1 h
 * Speed: 40 km/h
 * Fuel: 8 l
 * Main rotor diameter: 3.122 m
 * Tail rotor diameter: 0.581 m
 * Length: 2.86 m
 * Width: 0.75 m
 * Height: 1.18 m

X-Copter
X-Copter is the remotely piloted version of Shark-120 unmanned helicopter, and all parameters of X-Copter is identical to that of Shark-120.

B1-100
B1-100 is an unmanned helicopter of conventional helicopter layout, and the landing gear system consists of a pair of skids. B1-100 is powered by a 100 cc engine. Specification:
 * Empty weight: 30 kg
 * Max take-off weight: 48 kg
 * Payload: 18 kg
 * Fuel: 3 l
 * Main rotor diameter: 3.2 m
 * Tail rotor diameter: 0.65 m
 * Length: 3.1 m
 * Height: 1.0 m
 * Width: 0.5 m
 * Cruise speed: 10 m/s
 * Rate of climb: 2 m/s
 * Minimum operating altitude: 20 m

B-400
B-400 is conversion package developed by BE to convert light helicopter or home built helicopters into unmanned helicopter. Payload is decreased in exchange for additional fuel capacity, so endurance and range are increased after conversion. Specification:
 * Engine: 150 hp piston class
 * Rate of climb: 305 m/s
 * Main rotor diameter: 7.6 m
 * Tail rotor diameter: 1.2 m
 * Ceiling: 3 km
 * Length: 9 m
 * Fuselage length: 6.7 m
 * Width: 1.8 m
 * Height: 2.4 m
 * Cruise speed: 150 km/h
 * Range: 280 km
 * Endurance: > 3.5 h (increased from 2 h)
 * Empty weight: 442 kg
 * Max weight: 680 kg
 * Fuel: > 100 l (increased from 64 l)
 * Payload: > 150 kg (decreased from 238 kg)