| Topic: |
Science > Physics |
| User: |
"ClubK" |
| Date: |
23 Apr 2006 07:46:54 AM |
| Object: |
Question about an idea with gyroscope. |
I am not a scientist and very little knowledge of physics.
What do you think would happen to the platform?
Take a flat platform and mount a rather large gyro to it. The platform
must be able to float.
Mount a radio controlled mechanism, same used in RC, that will move
the top of the gyro down and back from the top a ggod inch.
Waht would happen to the platform? Would it move in the opposite
direction, try to flip, or what?
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| User: "Ian Stirling" |
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| Title: Re: Question about an idea with gyroscope. |
23 Apr 2006 08:25:19 AM |
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ClubK <walt@clubknowledge.com> wrote:
I am not a scientist and very little knowledge of physics.
What do you think would happen to the platform?
Take a flat platform and mount a rather large gyro to it. The platform
must be able to float.
Mount a radio controlled mechanism, same used in RC, that will move
the top of the gyro down and back from the top a ggod inch.
Waht would happen to the platform? Would it move in the opposite
direction, try to flip, or what?
It will try to tilt in a direction that depends on the rotation of the
gyro.
Depending on the design of the platform, this tilting may cause it to
move.
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| User: "ClubK" |
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| Title: Re: Question about an idea with gyroscope. |
23 Apr 2006 08:34:17 AM |
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.. and then the gyro would resist the movement so it wouldn't go far?
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| User: "Ian Stirling" |
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| Title: Re: Question about an idea with gyroscope. |
23 Apr 2006 01:55:34 PM |
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ClubK <walt@clubknowledge.com> wrote:
.. and then the gyro would resist the movement so it wouldn't go far?
Buy a gyro from ebay, and have a play.
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| User: "ClubK" |
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| Title: Re: Question about an idea with gyroscope. |
23 Apr 2006 06:20:56 PM |
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Is there a way to guess using math? If I do it for real, I would have
a large gyro made. I just wanted to see if it's even worth knowing the
answer by asking here first.
I love gyros and have a few small ones but nothing large enough to
use. Guess I will take a look on web for the cost of a ready made large
one.
Thank you for the replies!
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| User: "tadchem" |
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| Title: Re: Question about an idea with gyroscope. |
23 Apr 2006 06:49:49 PM |
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ClubK wrote:
Is there a way to guess using math?
Aristotle 'guessed' with math and decided that the heavier an object
is, the faster it will fall.
Galileo tried the experiment and show Aristotle to be theoretically an
idiot.
A mathematical guess is only good if the experiments support it.
Just *do* it.
Tom Davidson
Richmond, VA
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| User: "ClubK" |
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| Title: Re: Question about an idea with gyroscope. |
23 Apr 2006 09:34:24 PM |
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Ok, thanks to you all. I will go ahead and try it out.
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| User: "Ian Stirling" |
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| Title: Re: Question about an idea with gyroscope. |
24 Apr 2006 03:46:21 AM |
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ClubK <walt@clubknowledge.com> wrote:
Ok, thanks to you all. I will go ahead and try it out.
A small gyro behaves the same as a large one - it's just that for a
large one the forces are generally larger.
I'd look on http://en.wikipedia.org/wiki/gyroscope
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| User: "John Bailey" |
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| Title: Re: Question about an idea with gyroscope. |
24 Apr 2006 07:30:29 AM |
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On 23 Apr 2006 05:46:54 -0700, "ClubK" <walt@clubknowledge.com> wrote:
I am not a scientist and very little knowledge of physics.
What do you think would happen to the platform?
Take a flat platform and mount a rather large gyro to it. The platform
must be able to float.
Mount a radio controlled mechanism, same used in RC, that will move
the top of the gyro down and back from the top a ggod inch.
What would happen to the platform? Would it move in the opposite
direction, try to flip, or what?
I think you may be thinking along the same track I was thinking when I
posted this:
http://tinyurl.com/ok9xt
(excerpt)
The gyrocompass aka the Foucault gyroscope is simply a spinning
gyroscope with its spin axis constrained to rotation in the horizontal
plane. Due to the component of the earth's spin which lies in the
horizontal plane, the Foucault gyroscope acts like a compass, aligning
its axis of spin with north. The value of this horizontal spin
component is omega*cos(theta), where omega is the angular velocity of
the earth and theta is the latitude.
If a similar gyroscope is constrained to a vertical plane,
perpendicular to the direction North ie parallel to the direction
East-West and vertical, the gyroscope will align itself with the
vertical component of the earth's spin. In the northern hemisphere,
the end of the gyroscope that points up would be the same end as the
one that would point north when the gyroscope is horizontally
constrained.
I got no satisfactory answer. Reading your post, it is unclear what
the RC mechanism will push. Is it mounted entirely on the same
platform as the gyro? Is it simply pushing on the axis of the gyro to
change the angle of the gyro with respect to the Platform?
A gyrocompass is a well known and widely used device which is not that
hard to describe with ample specificity. In my original post, I
regret failing to insist that the respondent apply his same criteria
for rigor to the gyrocompass descriptions and then give me an answer
based on the simple change of orientation. You have the same
description problem. Ultimately, is suspect you are examining the
same conclusion I was reaching for as the basis for my earlier post.
John
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| User: "ClubK" |
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| Title: Re: Question about an idea with gyroscope. |
24 Apr 2006 10:42:49 AM |
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The RC device is a servo that pulls a cable I do believe. And it would
be connected to the platform and to the top of the housing of the gyro
for the first experiment. I will be trying to connect to the gyro at
different places and spin the gyro counter and clockwise.
I will also be designing a brake thet will stop the gyro from spinning
to see its effects as well.
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| User: "Jan Pantelje" |
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| Title: Re: Question about an idea with gyroscope. |
24 Apr 2006 11:02:29 AM |
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On a sunny day (24 Apr 2006 08:42:49 -0700) it happened "ClubK"
<walt@clubknowledge.com> wrote in
<1145893369.491337.125860@g10g2000cwb.googlegroups.com>:
The RC device is a servo that pulls a cable I do believe.
A RC servo normally has a wheel that turns about 180 degrees.
There are holes in the wheel (or it has a star form with holes), that
you can connect strings or rods to.
The RC servos come in many strengths.
You need a 0.5 to 1.5 milli second pulse periodically to turn the servos
(1mS midrange).
When no pulse is supplied, and not too much force is applied, it may stay
in last same position.
However for full force you should pulse it continuously.
One ground, one +5V and one +5V pulse input.
RC servos can draw considerable current.
You also must make sure they do not turn past the mechanical end.
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| User: "ClubK" |
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| Title: Re: Question about an idea with gyroscope. |
24 Apr 2006 10:56:16 AM |
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The gyro will need to be free floating until we are ready to change the
angle of the gyro so maybe I should use magnet fields to make the gyro
change angles. I'll have the gyro made of alum or some other
non-magnetic material and attach a magnet on the gyro housing and a
coil on the platform.
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| User: "Ian Stirling" |
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| Title: Re: Question about an idea with gyroscope. |
25 Apr 2006 10:54:49 AM |
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ClubK <walt@clubknowledge.com> wrote:
The gyro will need to be free floating until we are ready to change the
angle of the gyro so maybe I should use magnet fields to make the gyro
change angles. I'll have the gyro made of alum or some other
non-magnetic material and attach a magnet on the gyro housing and a
coil on the platform.
It might be worth posting what you think will happen, as it sounds like
it's more than what will.
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