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 01:17:42 GMT
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Viewed:
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864 times
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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?)
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
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Message has 2 Replies:
 | | Re: flying helicopter? (was: orrery update)
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| (...) The chinook gets around this by having the rotors on different levels - the rear one is sufficiently high to ensure it can't hit the front. (...) Yes, enough power to lift a LEGO helicopter would definitely be a challenge 8?) ROSCO (22 years ago, 5-Feb-03, to lugnet.technic)
| | | Re: flying helicopter? (was: orrery update)
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| (...) Or why not using this setup? (URL) 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) (22 years ago, 5-Feb-03, to lugnet.technic)
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Message is in Reply To:
| | Re: flying helicopter? (was: orrery update)
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| (...) Just browsed your site fully and wow cool! 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 (URL) way the extra weight is offset by the extra lift 8?) (...) (22 years ago, 5-Feb-03, to lugnet.technic)
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