Russia Presents Nearly Silent Hydrogen Model at MAKS 2019 | Aviation International News

Russia Presents Nearly Silent Hydrogen Model at MAKS 2019

The technology exists, but there are plenty of obstacles to widespread use, claim analysts.

By Eugene Gerden

September 3, 2019

Russia presented its first environmentally friendly and almost silent manned aircraft with hydrogen thrust during MAKS 2019 airshow. That was the two-seater aircraft, dubbed Sigma-4. Its wingspan will be 9.8 meters, while the length is approximately 6.2 meters. The aircraft will also have a takeoff weight of 600 kg and a flight range up to 300 km.

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