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The press releases have been rather coy about how the engines and propellers/rotors are actually linked up. I see Eurocopter touting this as a less complex alternative to Sikorsky's X2, and I'm wondering if they simplified by using one engine for the rotor and a separate one for the props. Given that the engines used in the X3 demonstrator (RTM 322) are at least twice as powerful as those in the original EC155 airframe (Arial 2C2), I think it's quite possible that they separated the two drivetrains entirely. Simpler, certainly, but much less efficient from a weight perspective.

[QUOTE="TomS, post: 105101, member: 1484"] The press releases have been rather coy about how the engines and propellers/rotors are actually linked up. I see Eurocopter touting this as a less complex alternative to Sikorsky's X2, and I'm wondering if they simplified by using one engine for the rotor and a separate one for the props. Given that the engines used in the X3 demonstrator (RTM 322) are at least twice as powerful as those in the original EC155 airframe (Arial 2C2), I think it's quite possible that they separated the two drivetrains entirely. Simpler, certainly, but much less efficient from a weight perspective. [/QUOTE]

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