Dry lines of the official reports, and in fact for our country is a real sensation that promises major technological breakthrough. For a number of reasons we are seriously lagging behind the world level in the development and production of engines of high power. And now trying to catch up. Four years ago, work began on the engine PD-35. One of the most difficult challenges that had to be addressed to its creators, is the design of the fan, the diameter of which exceeds three meters.
Explain fan turbofan engines called multiblade compressor, which is located before the inlet of the gas turbine unit, which creates the main traction. Fan can significantly increase the thrust and engine power, to what extent it contributes to additional cooling, as part of the air flow flows around the combustion chamber from the outside. These fans feature a large diameter and an impressive size.
And the main task of designers is to keep the weight of the huge motor within the acceptable values.
this task is Solved only in the case of the manufacture of fan blades of light composite materials. In the West, fans for engines and wide-body long-haul aircraft made of composites. Mastered this technology for nearly twenty years, spending a total of hundreds of billions of dollars, euros and pounds. And it was justified. Only the use of composites in the big fans of gas turbine engines reduces the weight of the motor to several hundred kilograms. Today the secret of development and construction of plastic motors is owned by three countries – the UK, USA and France. We can become the fourth.
the Fan of a gas turbine is quite vulnerable against external influences. It first gets all the aerodrome garbage, it happens, fly the birds. Brittle plastic can break down, which in turn can lead to stopping the engine, and even its fire. The developers of PD-35, according to them, have found a way to protect composite blades against these dangers.
Flight tests are already full-size demonstrator PD-35 on schedule to begin in 2025. The developers expect that the PD-35 will choose to install on the prospective Russian-Chinese aircraft CR929.
