flywheels yet again

[boslab]

Ok when a gyro is spun up it settles in a particular position? If that is the case, and it has no memory then something influenced it to go to that position?
what is the somthing that did it?
im in the dark myself, a magnetic compass settlement is along the line of influence, not north, if it’s near a wire or the hull of a ship it will be influenced
are gyroscopes similar , is the ferromagnetic rotor thus influenced.
mark

[A.K. Boomer]

Ok when a gyro is spun up it settles in a particular position? If that is the case, and it has no memory then something influenced it to go to that position?
what is the somthing that did it?
im in the dark myself, a magnetic compass settlement is along the line of influence, not north, if it’s near a wire or the hull of a ship it will be influenced
are gyroscopes similar , is the ferromagnetic rotor thus influenced.
mark

KF2's number 37 says it very well, the "basic" gyro spools up and settles into it's own positioning, it's different every time, then while your craft is "static" you calibrate it to a "known position" like true north, then your good to go,,, it does not "seek out a magical position with the universe or earth or anything" it has no idea where the fuque anythings at, but it does have the perfect idea of where it's at... it is in the act of calibrating that then gives reference to "where your at and what direction your going"...

[old mart]

When a gyro compass is run up to speed, the rotor spindle will be pointing in a random direction, but will stay in that direction as the mechanism with the pointer is aligned to whatever direction is required, usually North. then the gyro keeps the pointer pointing in the same direction regardless of the direction the vehicle it is in is facing. In a tank, there will be a limited ammount of movement, mostly not far off parallel to the surface of the earth, but in any direction of the compass, so the gyro will not be totally unrestricted which simplifies the mechanism linkage. A tank gyro would not work if the tank was upside down, but that hardly matters.

[The Artful Bodger]

A gyro compass in an aircraft was just a supplement to a magnetic compass. The magnet compass was ok as long as the plane was flying in a straight line, but errors were introduced when a turn was made and took a little time to settle down. The pilot would turn on and align the gyrocompass just before making the turn, and it would stay true until the magnetic compass had settled down on the new heading, whereupon the gyro would be switched off.

From post # 34

In a basic aircraft gyro direction indicator the pilot must align the gyro according to his compass (or by other means). From then on the aircraft moves and the gyro repeater instrument shows the movement of the aircraft relative to the universe.

The instrument on the panel of most aircraft is not a gyro compass, it is a gyro stabilized indicator which must be periodically reset (15 mins or so) from the magnetic compass.

It must be reset partly due to instrument deficiencies but principally because the earth on which we live is forever moving while the (perfect) gyro remains aligned to its direction in the universe.

A gyro compass is a gyro device that under the influence of gravity aligns itself with the earth's axis (i.e. True North). Ships may have one gyro compass and various repeaters around the ship. Heavy aircraft may have a gyro compass and it would be mounted somewhere remote from all the action, in the tail, out on a wing etc.

[later] I have been told that the gyro compass is unsuitable for aircraft, so maybe not in aircraft!

[old mart]

Gravity points towards the centre of the earth, how could that align anything but a plumb bob or a spirit level ?

[The Artful Bodger]

KF2's number 37 says it very well, the "basic" gyro spools up and settles into it's own positioning, it's different every time, then while your craft is "static" you calibrate it to a "known position" like true north, then your good to go,,, it does not "seek out a magical position with the universe or earth or anything" it has no idea where the fuque anythings at, but it does have the perfect idea of where it's at... it is in the act of calibrating that then gives reference to "where your at and what direction your going"...

Who invented the notion that the basic gyro "seeks", I think you must have?

It is not a matter of "knowing" or not, the gyro instrument is an inanimate object which is a slave to the rules of inertia. Inertia as most of us know is a universe thing.

The gyro does not have any idea of where it is at and calibrating it does not tell it. Observing a basic spinning gyro does not tell us our position either, it only indicates how we are moving in the universe.

[The Artful Bodger]

Gravity points towards the centre of the earth, how could that align anything but a plumb bob or a spirit level ?

From Britannica :-

gyrocompass, navigational instrument which makes use of a continuously driven gyroscope to accurately seek the direction of true (geographic) north. It operates by seeking an equilibrium direction under the combined effects of the force of gravity and the daily rotation of Earth.

I think the basic principle is that the westernmost side of the wheel appears heavier due to the earth's rotation.

[A.K. Boomer]

The gyro does not have any idea of where it is at and calibrating it does not tell it.

Perfect, gots no argument with that one in fact well said... all I can add is that it does form a constant of where it's at (position wise) due to the fact that "wherever it's at is a constant" so in calibrating something to it you can now know your directional travel to the thing you calibrated it too...

[A.K. Boomer]

Gyro's are nothing new,,,,,,,,, some of the best vacuum packed high precision "gimbal-les" ones were created billions of years ago, and are still in operation today!

[The Artful Bodger]

Perfect, gots no argument with that one in fact well said... all I can add is that it does form a constant of where it's at (position wise) due to the fact that "wherever it's at is a constant" so in calibrating something to it you can now know your directional travel to the thing you calibrated it too...

Good grief!

[A.K. Boomer]

Good grief!

Brilliant - possibly one of your best responses yet ------ once again it shows your oblivious to knowing what's going on in fact - like the gyro - you do have perfect direction - but you don't have a freaking clue as to where it's at lol and like the gyro - your consistent lol


tried to be nice - and give you an "out" but freaking bring it dude, its on... lol

[A.K. Boomer]

The gyroscope is locked to the universe

Oh really - what part of the universe - the sun is part of it right? so is the earth, please enlighten us as to what part ? pluto, can we still call it that? lol

what about a distant galaxy ? which one? lol

The gyro could give a rats freaking ass what the rest of the fuquing universe is doing "mate" the gyro is part of the universe that like so many other pieces of it - has formed it's own directional stabilization due to rotation/mass and inertia.... you on the other hand --- are "adrift" lol

[Mike Amick]

when I fire my tank? gyro up, it take like 5 min to get up to speed and it is screaming ! Anyways, when I uncage it unlocking the spindles where ever it is pointing, it stays pointed in that direction. I can move it all around and it stays pointed in the same direction.

[The Artful Bodger]

That must be exciting! How long does it stay pointing in that one direction?

[A.K. Boomer]

when I fire my tank? gyro up, it take like 5 min to get up to speed and it is screaming ! Anyways, when I uncage it unlocking the spindles where ever it is pointing, it stays pointed in that direction. I can move it all around and it stays pointed in the same direction.

Pretty cool - doing what it's supposed to do - why "screaming" is it just crazy RPM's that create harmonics or you think it might be out of balance or have a bad bearing?

There are some very cool aviation gyro's on E-bay, vacuum powered could hook up to a car engine, I so much like that kind of precision in stuff --- and it will do nothing but get rarer and rarer due to GPS and all that, can you imagine the hit the gyro instrument business took when all that stuff started showing up?

You can get a vacuum aviation gyro on e-bay for like 45 bucks...