Drones Cai Hong 4 (CH-4, "Rainbow-4") are produced by the CAAA Academy, which is part of the state-owned CASC corporation. UAVs began to enter into service with the PLA Air Force in 2013. “Rainbow-4” is available in two versions - there is a reconnaissance device CH-4А with a flight time of up to 30 hours and a reconnaissance-impact CH-4В capable of carrying up to 350 kg of combat load on four external suspension nodes.
In late January, the CAAA tested a new version of the drone, called the CH-4C. The developers do not disclose the characteristics of the new modification, but it is known that the new drone will have an increased payload and be equipped with a more powerful electric generator. In addition, CH-4C will receive an updated data processing system and a modern electronic architecture.
The CH-4C will work in adverse weather conditions and is compatible with the new 100-kg laser-guided bombs. Also, the new modification will be equipped with improved intelligence modules and will be able to carry a module of electronic intelligence.
The Cai Hong 4 are considered to be analogous to the American MQ-9 Reaper UAVs. The wingspan of the "Rainbow-4" is 18 m, the maximum take-off weight (for the first two modifications) is 1,3 tons. According to unofficial data, these drones are already exported to Egypt, Iraq and Saudi Arabia, reports "Warspot".