Subject:
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Re: flying helicopter? (was: orrery update)
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Newsgroups:
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lugnet.technic
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Date:
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Wed, 5 Feb 2003 17:15:02 GMT
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Viewed:
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919 times
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In lugnet.technic, Don Rogerson writes:
> In lugnet.technic, Ross Crawford writes:
> > A suggestion for your helicopter - if you can build a single rotor with
> > enough lift, why not just build 2 and connect them, like the chinook
> > http://rotored.arc.nasa.gov/activity/chinook.html
> >
> > That way the extra weight is offset by the extra lift 8?)
>
>
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> Ross - The challenge I'd run into would be coordinating the blades so they
> don't chop each other to pieces. Or I'd have to space them out quite a bit -
> the rotor I used in my last try had a radius of about 16L.
>
> Another problem I'd face is getting enough power. To generate any lift, I
> have to develop some serious rpm's. I do this by using a second motor as a
> hand-cranked generator.
>
> DR
Or why not using this setup?
http://british.nerp.net/lego/av8/chopper/index.html
and then click in "General Layouts"
It also uses 2 counter-rotating rotors as the Chinook , but very close one
to another
Luis
(comments, instructions, death threats, etc. please remove all the X's)
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Message has 2 Replies:
 | | Re: flying helicopter? (was: orrery update)
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| (...) Hi Luis - Checked out that page, and the experimental helicopter you have shown seems like an impossible setup. How do the two rotors, the way they are mounted, keep from chopping each other's drive shaft to bits? Even if they're at different (...) (22 years ago, 5-Feb-03, to lugnet.technic)
| | | Re: flying helicopter? (was: orrery update)
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| (...) I don't agree that the last layout would be impossible in LEGO, it's just hard to achieve. I won't prove you wrong though but the photo clearly show the controls for the swash plate goes on the outside and that must be possible with LEGO as (...) (22 years ago, 6-Feb-03, to lugnet.technic)
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Message is in Reply To:
| | Re: flying helicopter? (was: orrery update)
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| (...) Ross - The challenge I'd run into would be coordinating the blades so they don't chop each other to pieces. Or I'd have to space them out quite a bit - the rotor I used in my last try had a radius of about 16L. Another problem I'd face is (...) (22 years ago, 5-Feb-03, to lugnet.technic)
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