Engine HIPE-AE440 for helicopters
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Engine HIPE-AE440 for helicopters

The organization “Clear Sky” is preparing a HIPE-AE440 diesel engine for flight tests

Aviation gasoline has been the optimum fuel for light aircraft for decades. Currently, leaded aviation gasoline is becoming difficult to find in some regions, and therefore, new types of engines, including diesel ones, are being actively developed for use in aviation. Diesel engines have low specific fuel consumption, but there are also disadvantages - weak power and overweight, which is the main obstacle in the development of widespread use for use on airplanes and helicopters.

Research teams in European countries are conducting ground tests of the new aircraft engine to replace the turbo-shaft engine, which will be used on an Airbus EC 120 helicopter. Flight tests of a power plant with a high degree of compression (HCS) will begin in the middle of the 2015 year in France on a test bench. Soon there will be a test of the v.8 diesel with a turbocharger, specially designed for use in aviation.


The diesel engine is being developed under the Clear Sky program by Airbus, Teoc Pawertrain Engineering and Austro Engine using open financing in the amount of 1.69 billion dollars. “Clear Sky” is a public-private partnership under the auspices of the European Union, which provides partial funding for a research and design program. Companies from Russia also take part in this program. The partnership was formed in 2007 year and will last until 2017 year. The first steps to create an organization were taken in Austria. At the moment, there is a prototype of an 330 kW (440 hp) engine - AE 440, which can be installed on light aircraft. Developing a helicopter engine may take a little longer to provide the necessary indicators to help economically use the new engine.

The Clear Sky partnership aims to achieve a reduction of 30% SFC, 40% emission of nitric oxide, and 50% carbon dioxide emissions for use on an EC 120 helicopter. Also, a reduction in 30% of direct operating costs and a doubling of the range of flights with the same amount of fuel are expected.


Performance powerplant AE 440 make weight ratio and power factor 0.8 kg / kW, fuel consumption 235 g / kWh.

The main design features of the engine are aluminum cylinder block engine with fuel injection. Fuel will be supplied under pressure 1800 bar and provide better atomization and combustion.

Engine AE 440 will have a gear change mechanism for controlling the speed of flight.

Ivan BERESNEV specifically for Avia.pro