Alt-BEAM Archive
Message #13802
To: beam@sgiblab.sgi.com
From: BUDSCOTT@aol.com
Date: Fri, 21 Apr 2000 15:28:02 EDT
Subject: Re: efficient launcher?
In a message dated 4/21/00 1:51:57 PM Central Daylight Time,
flytch@hotmail.com writes:
<< In that case you would not need a grapple... Just a barbed skewer...
"Oh look... It's look at me... Ouch!!! my eye!!!"
>>
It's all fun and games until somebody loses an eye, than its just fun and
games with one eye! I've started on my launcher, and here is what i have so
far: My graple is a three pronged trilateral symetry graple made out of 8
gauge household copper wire, and the bottom of it, there is a pen spring that
i have soldered to it. For the launcher of the grapple i have a bic pencil.
Remeber back in grade school when you would take your bic pencil and make it
into a rocket launcher, it's the same principle. You pull off the tip of the
pencil to reveal the feeding mechinism for the lead, then you cut off the
feeding mechinism and pull out the inards of the pencil, then your left with
a hollow tube with a small hole at one end, i cut the tube to be about the
length of just the graple (no spring) then you can simply attach some string
to the grapple and pull it through the small hole. My idea of how it could
lauch is to have a fishing reel type system, this way the motor can easily
let go of the string, no problem, right? There ya have it, so have fun!!!!
-Spencer
<http://www.botic.com/users/beamstop>
not a robot scientist
not a college major
not a grad student
not a professor
not a very organized person
just Spencer (isn't that impressive enough?)
13803 Fri, 21 Apr 2000 12:44:23 -0700 new approach to plants "'beam@sgiblab.sgi.com'" Wilf Rigter Hi Martin,
Nice description, I can think of several elegant solutions to the FRED HEAD
circuit.
wilf
"R. Martin Keen" wrote:
> A little while ago there was a message about making BEAM more lifelike.
> I think it came from the thread on water powered engines, and making a
>
> I think this is a much simplified (and slower)
> version of the PSH.
13804 Fri, 21 Apr 2000 12:49:06 PDT Re: efficient launcher?Magnetic acceleration? beam@sgiblab.sgi.com "sebastiaan van Vliet" I think magnetic acceleration is the easiest way to do this. This is just a
shaft with a number of coils around it. The first triggers, pulling the hook
in the shaft up, when the hook is at the coil, the next one triggers , etc.,
etc.
Nasa must have something about it on its site, since this is a researched
alternative for launching.
>From: "Phillip A. Ryals"
>Reply-To: beam@sgiblab.sgi.com
>To: beam@sgiblab.sgi.com
>Subject: efficient launcher?
>Date: Wed, 19 Apr 2000 11:55:33 -0500
>
>I had this groovy idea, but I'm not sure if it can actually be done
>efficiently. Maybe someone could give me some pointers?
>
>I was thinking that it would be cool to implement a grappling hook type
>system to allow a robot to get over large obstacles. It would require
>some type of winch system that retracts the line, and I think this has
>already been done with 'window washers'. But what about a launcher? I
>really don't think there's an efficient way to do it with a solenoid or
>motor... I just don't think a beam cicuit could really launch anything
>very far. I think it would need to be a system where a gear motor
>wiches the hook onto a spring. Then, you would need some sort of quick
>release to get the full force of the spring. I think a big problem
>might be the friction of the line used. That might be overcome if the
>hook had some weight though.
>
>
>Is this all just wishful thinking? It sounds like a LOT of trouble to
>go to, but I think the effect would be pretty cool. Set the bot in
>front of a wall three times it's height, and watch the bot climb it.
>
>
>Any ideas?
>
>
>-phillip
>
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