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Rybinsk Motors is developing a new combustor and a hushkit for its D-30 turbofan, which powers the Ilyushin Il-76 freighter (pictured) and the Tupolev Tu-154. The proposed hushkit has vortex generators and an ejector with acoustic mixer, claimed to cut noise by 3-4dB, while the updated combustor has a new forward section to allow for "more efficient fuel atomisation".

Source: Flight International