Gyroscopic space robot avoids negative reactions

[bisbeejim1]

That looks just too expensive.

[ChrizzzB]

der kammeraman ist zu doof zum filmen!!!

[moxigen]

@ChrizzzB es nennt sich schwerelosigkeit und bei einem parabelflug ist diese nicht gleichmäßig, aber das ist einfache physik und nicht jeder begreift das.

[ChrizzzB]

@moxigen ok gebe ich zu ich hätte auch mal zuhören sollen anstatt nur zu schauen! denn könnte da auch der beste kammeraman nix machen! ich nehme alles zurück! dabei ist physik eines meiner lieblingsfächer! danke...

[moxigen]

@ChrizzzB haben die das im video erwähnt? ich hab nämlich auch nicht zugehört ;) da es mir aber auch störend aufgefallen ist habe ich drüber nachgedacht und als ich die schwebenden leute im hintergrund bemerkte kam es mir...nichts zu danken

[ChrizzzB]

@moxigen habe die ganze zeit versucht zu verstehen was das für ein roboter ist! aber beim zweiten mal und mit nem stups in die richtung versteht man das es was mit dem freien fall und flougzeug zutun hat! wie du schon sagtest, die simulierte schwerlosigkeit! müssen irgendwelche tests sein! aber ausprobieren möchte ich soetwas auch mal gerne!

[moxigen]

@ChrizzzB was hier versucht wird ist ein robeterarm zu entwerfen, welcher die kraft für seine arbeit aus den deutlich zu sehenden gyroskopen schöpft, um zu vermeiden, dass die bei herkömlichen motoren rückwirkende kraft die position des am roboter befindlichen raumfahrzeugs verändert.

[sacr3]

The properties of space amazes me sometimes. Ever see the Box of cards trick? In space if you spin it a specific way it'll do a few spins then twist, do a few spins then twist, etc. Very odd...

[UnBknT]

Did she said "Vomit comet" ?

[Deke101]

@UnBknT Yes. Vomit Comet is the nickname given by NASA scientists to a fixed wing aircraft used to simulate zero gravity.

[vitruvian8807]

Thanks for the comments, got done reading them and understand it more now.

However, why is it that you can't use a conventional motor in space? the inertia created by it when it spins or what?

[TheMegaJet]

Well don't motors consist of magnetic coils? I don't think magnets can function the same in a vacuum

[nazaxprime]

@TheMegaJet Think again... Electro-magnetism is what it is. There is no real difference. Though if you move out from earths seal level, you will notice the alignment a perm-magnet points in a way that is more obvious in its three dimensionality. The is because of the magnetic lines of flux, and their orientation the the movement of the Iron core of the earth, in relation to the sun, the solar "wind"... and at the risk of being not completing the idea, "ETC". Sry, youtube comment budgeting sucks.

[nazaxprime]

@TheMegaJet I would like to give you the opportunity(and others as well) to learn from this naval publication online:

Na 01-1A-16

I graduated the course that utilized that publication, and was responsible for the inspection of billions of dollars of equipment thanks to my understandings, and compliance with certifying bodies...

Now I'm just this dude on the internet, with no responsibility and a bad back... oh how the mighty have fallen.

Anyway, enjoy, and you may want to make a sandwich...

;D

[fuunguus]

Any motion done by a conventional motor will push the space craft out of it's original angle. Only thrusters or a big gyroscope within the space craft could correct it. Using gyroscopes to move the arm is a great idea, as it eliminate this problem.

[nazaxprime]

@vitruvian8807 see my recent comment here for more stuff to read. google "NA 01-1A-16"...

[LukeSkyscraper]

Baring in mind that I have taken note that there are other advantages to using gyroscopes for this application - I have to ask, if they're not using motors (which don't work well in space) to power the arms then what are they using to power the gyroscopes hmmmm?

And I agree with the people who ask "why haven't they done this before?" hehe, it's remarkable how clear forward vision is in hind sight.

[0urGaia]

If I understand it correctly, the re-active force from pushing a satellite with the arm is countered by the gyroscopes instead of the shuttle, so they don't have to use fuel to keep shuttle on course.

[nagualdesign]

LukeSkyscraper; The gyroscopes do use motors but they work in pairs.

Imagine you were floating in space with your arm by your side. If you extended your arm using your shoulder muscles (motor) your body would move in an equal and opposite manner.

(Continued...)

[nagualdesign]

...If, however, you extended your arm using paired gyroscopes attached to your wrist, your body would not move (as much).

I'm guessing that the orientation/speed of these gyros requires considerable effort to control in order to minimize 'body' movement, and isn't at all as straightforward as some people believe. ;-J

[LukeSkyscraper]

I understand the principles of how it works :) I was just being unnecessarily pedantic about the statement that it doesn't use motors :). After all the gyro's don't spin themselves. So it does use motor's just indirectly and I understand that the arm isn't actually necessary either. You could use the gyro's to move a free floating object, the arm in this case is as much of a tether and communications link as a guide. The reactive forces on the spacecraft body will be far less than usual.

[nagualdesign]

Hmmm... Not quite pedantic enough. A true pedagogue would never have misinterpeted their own abbreviation of the stated phrase, 'conventional motor' ;-J

Also, you could use the gyros to move a free floating object, but only a rigid (when neccessary) arm can hold an object in perfect relative position to a spacecraft, allowing the spacecraft to perform manoeuvres without slewing away from the object.

[PerfectBlindness]

This video was very interesting. Thankyou for sharing it.

[crisrj214]

I think I understand it. Instead of using actuators to move the arm they are using gyrocsopes. Correct?

[provoko]

way too short to understand, must these videos be so short?

[bitRAKE]

(IMHO) They are really just to augment their magazine articles. As you might suspect they are trying to bring greater readership to their website rather than actually promote YouTube with an assortment of quality videos.

[Topecs]

Why are they just now trying this? It's simple, and it's been in sci-fi for decades!

[danniboi07]

basic engineering economics. if it ain't broke, don't upgrade it.

basic american economics. Milk a technology until it's LONG dry, then make a minimal improvement and milk that.

[FOREXpilotROBOT]

FOREXpilotROBOT WELCOME...

[inthefade]

good bye canadarm!

[toytunergt]

wow its so simple...why didnt i think of this.....i could be rich.

[animes25]

I dont get it, gyroscopes are used since ages, putting one in a robot is nothing new, this is crap

[superdau]

Hmm, the Hubble Space Telescope uses gyroscopes for orientation since 1990.

[superfisto]

Yes, for orientation. These gyros are used to produce force.

[tommasfoolery]

i hate the way this chick talks.

[patio87]

Yeah I think that's what annoys me about these videos as well.

[alex3914]

Man!! New scientist is instigating my thoughts so well. Lots of things haven't been invented yet!

[rotatingwah]

took them long enough to consider such simplicity....... or why is it that i pondered this years ago......hmmm

[mymeditation]

Lies.

[DudeParallel]

Why would it be a lie?

I had thought of a similar idea way back in physics class when i first learned of gyroscopes, and my physics teacher said 3 words, "it wouldn't work".

Always knew that guy was an idiot. (he was one of those old guys though, refusing to accept anything new)

I'm really surprised they hadn't thought of this earlier, quite shocking to be honest...

[rotatingwah]

thanks for the support Dudeparallel, forward thinking comes naturally to some.....well a few of us anyway. hat's off to you. btw, t'was no surprise mymeditations videos in their collection. i went through yours and i think you'd like some of the stuff in my playlists particularly the visual arts and the guitar-various category. it's all good stuff there so enjoy, rotatingwah

[rotatingwah]

thanks for the support Dudeparallel, forward thinking comes naturally to some.....well a few of us anyway. hat's off to you. btw, t'was no surprise mymeditations videos in their collection. i went through yours and i think you'd like some of the stuff in my playlists particularly the visual arts and the guitar-various category. it's all good stuff there so enjoy, rotatingwah

[rotatingwah]

how'd you like what DudeParallel posted? feel a little embarrassed? Your one word reply gave me the pleasure to know i'm smarter than you as well as some sadness to know what challenges you must face in understanding how things work. maybe something will dawn on you if you meditate on developing your creative and problem solving muscles. good luck and don't give up!

[DudeParallel]

Heh, i almost wish i could figure out where my old teacher was and show him this.

Mind you, he did retire early the year after due to a bad knee, i think he has had enough.

We always disagreed on things, he never did like me for that. (even said i was going to fail the course!!)

[dafttool]

NASA will like this quite a bit.

[Moonmuncher888]

I dont get it

[unbeliever1000]

cool!

[holycrapapie]

new scientist was mentioned in my newspaper today^^

[N3SB0Y]

so... umm... can I rotate on my office chair using a bicycle wheel?

[marjan15]

Yes, try it. It's fun. :)

[Paulginz]

Yes, you can rotate your office chair using a bicycle wheel if the chair isn't rusty (low friction).

[ultimatelights13]

nice