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WZ6 Turboshaft engine

In 1975, Jiangxi Helicopter Factory (JHF) started to develop the Z-8 large land and water based helicopter. The powerplant was WZ6 engine (each helicopter equipped with 3 engines). The engine would be developed by Jiangxi Helicopter Engine Factory (JHEF). The WZ6 was a free turbine turbo-shaft with a rear output shaft engine. The take-off shaft power was 1,130 kW (1,536 shp) and the weight was 300 kg. The engine features were high speed, small size, precision detail parts, and many integral machined parts, precision casting parts, welded parts, balanced parts and curvic couplings, which were difficult in the cold and heat workings, the assembly and test. JHEF was set up by HEF in 1969, with 1 / 3 of the personnel and equipment transfered from HEF. Therefore it had a fairly strong technical team.

The WZ6 engine development started at the beginning of 1975. It was led by chief engineer Du Jingqing. Yang Ronghua and Chen Shiying were responsible for design. The design drawings were finished in 1976. In 1980 the first batch of engines were put for running on the test bed. The 500 hours endurance test was passed in 1982. The 2nd batch of engines after a series of appraisal tests in 1986, were then installed on the Z-8 helicopter for adaptability flight. The Z-8 flew for 46 hours. After the drawings and technical conditions for the pre-production batches were perfected, the third batch of the engines were produced.




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