We sold China UH-60s and they have copied them in mass so that manufacturing industry to keep them flying is already in place.
Thanks, I didn't know that - but it looks like the source and design is different than that.
The speculation arose from the fact that the PLAAF had bought 24 Sikorsky S-70-C2, which the Black Hawk was based on. There were also speculations that linked the design of Z-20 to the Black Hawk that was abandoned by US special forces in
Pakistan during the
operation to kill Osama bin Laden on 1 May 2011.
[13] According to sources, Pakistan had allowed Chinese officials to examine wreckage of the abandoned Black Hawk.
[14]
While the Z-20 bears a strong resemblance to the S-70/UH-60 Black Hawk series, there are several key differences including a five-bladed main rotor (as opposed to four on a Black Hawk) and more angular tail-to-fuselage joint frame, giving it greater lift, cabin capacity, and endurance than the Black Hawk. It also has a
fly-by-wire design as well as fairings installed aft of the engine exhausts and on the tail spine, which are likely housings for
satellite communications or the
BeiDou satellite navigation system.
[15] Aviation Week points out that China may had decided it was better to improve upon the proven known design of the 1970s S-70/UH-60 Black Hawk that fits PLA operational requirements than to assume developmental risks. This was consistent with the strategy that China used with the development of the Z-8 and Z-9 helicopters.
[3]
The Z-20 is believed to be powered by the domestic WZ-10
turboshaft engine providing 1,800 kW (about 2,400 shp), compared to the GE T700-701D engine that produces 1,500 kW (about 2,011 shp) on the S-70/UH-60 Black Hawk.
[16] In addition to a more powerful engine than the S-70/UH-60 Black Hawk, the Z-20 incorporates new technologies that reduce weight and improve lift as well as cutting edge de-icing tech on the rotor-blades. These features enable it to conduct operations at altitudes above 4,000 m (13,200 ft).
[4]