this post was submitted on 08 Jul 2023
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Helicopters

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This community is all about helicopters and related topics.

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Hello helicopter lovers! I'm from lemmy.world and I want to join, but it says my subscribe is pending!

Included is a picture of my favorite helicopter! The X-cube

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[–] [email protected] 2 points 1 year ago* (last edited 1 year ago) (2 children)

What's the main purpose of this design?

[–] kugel 3 points 1 year ago* (last edited 1 year ago) (1 children)

The forward propellers help achieve a higher speed. The main rotor can spin slower while the propellers give the aircraft more forward speed so that more lift is created by the rotor disc and stubs. The rotor has to spin slower to avoid it's tips going transonic. This thing can travel at 407 km/h cruise.

[–] [email protected] 2 points 1 year ago

So it varies it's rotor speed. That's unusual.