Rotorcraft Asia 2019: VK-2500 engine civil-certified in China
The Civil Aviation Administration of China (CAAC) has validated the Russian-issued type certificate for the Klimov VK-2500-01/02/03 turboshaft engine family for powering Mi-171 13t helicopters.
According to Rosaviatsia, the Russian civil aviation authority, the validation of the Mi-171’s type certificate at CAAC is also at the final stages.
This certification and validation works were undertaken jointly by CAAC and Rosaviatsia in order to allow delivery of the Mi-171s ordered by China General Aviation Service in November 2018. The first of these is set for delivery in 2019 or 2020, and the contract is slated for completion by 2022.
The VK-2500-01/02/03 family is an increased-rate derivative of the baseline TV3-117VMA engine, designed by ODK Klimov, but produced in the past at Motor Sich in Ukraine.
Now the VK-2500 family is in production in Russia, at Klimov’s newly-built plant in Shuvalovo near St Petersburg in several versions intended for powering both military and civil helicopters in the 11 to 13t maximum take-off weight range.
The main performance-boosting new features in the VK-2500’s design compared to the TV-117VMA included an all-new turbine section and the BARK-78 FADEC/condition monitoring unit.
The engines are intended for powering helicopters operated in hot-and-high conditions, granting increased payload in addition to higher static and dynamic ceiling. Ina addition, the more powerful engine provides better flight safety margins in OEI conditions.
All the three VK-2500 subversions feature the same design, and are OEI-rated at 2,700shp but feature different settings of their BARK-78 FADEC unit. The VK-2500-01 has a maximum take-off rating of 2,000shp, while the VK-2500-02 is rated at 2,200shp for take-off and the cruise rating of both sub-versions is 1,500shp.
The VK-2500-03 is the most-powerful sub-version, rated at 2,400shp for take-off while its cruise power has been increased to 1,750shp. The service life is 6,000h, advertised by Kamov as being extendable up to 9,000h, while TBO is set at 2,000 hours.
In June 2014, Russian Helicopters reported the completion of delivery of 84 Mi-171Es for the Chinese company Poly Technologies (for a subsequent handover to the Chinese military), powered by a military-certified VK-2500 derivative.
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