cavelamb wrote:
Gogarty wrote:
In article lutions,
lid says...
"Joe" wrote in message
...

I heard on ABC news that the Navy Seals used "Gyro Stabalized" rifles
to take out the pirates.

I've never seen such a rifle..anyone know what she was talking about?

It was either the best shots on earth, or we have not heard the whole
story of the Pirate shots.

What is the best Pirate killing rifle?

Joe

I heard the same thing on ABC... interesting.

--
"j" ganz @@
www.sailnow.com


Have not heard of this before but if you can have gyro-stabilized
binoculars I would think gyro-stabilizsing a large weapon would be a
simple problem.


I think you thought wrong on this one G.

Gyro stabilizing binocs involves movinh a tiny mirror.
A gyro stabilized gun would be a massively different thing.

Richard


No, they had gyro_stabilized binoculars in the sixties that used a pair
of gyros to stabilize the whole shebang, there was was a cylindrical box
about as big as the binocs two which a standard pair of binoculars was
attached.

Modern techniques use either a small mirror or move the prisms....

Cheers
Martin

"cavelamb" wrote in message
m...


A gyro stabilized gun mount is simply connected to the ship's gyros. It's
all low frequency large amplitude signals but has to track position (Type I
control system). Binoculars could be image stabilized (lower in cost) or
gyro stabilized. That control loop (gyro) has higher frequency signals but
can tolerate positional error (Type II control system). The gun mount ships
gyro is a mechanical system. The good optical systems use laser ring gyros.
Aircraft mounted laser pointing systems are the hardest to stabilise. I
serious doubt there are any gyro stabilized shoulder fired rifles. If the
shooter is that shakey he's no marksmen. In the case of the pirates, so what
if the rifle on the ship is stabilized if the target is bouncing all about?
Stabilizing the rifle relative to the earth (absolute space in reality)
doesn't buy anything in accuracy if the target isn't in that reference
plane. It's like bench rest shooting at moving targets. Does anyone remember
the old binocular driven gun directors from before WWII ships and how they
worked?

http://www.usstexasbb35.com/mk_51.htm

http://www.researcheratlarge.com/Ships/Misc/Mk49/

http://www.eugeneleeslover.com/USNAVY/CHAPTER-20-C.html

http://en.wikipedia.org/wiki/Mark_37...Control_System

"cavelamb" wrote in message
m...
Gogarty wrote:
In article lutions,
lid says...
"Joe" wrote in message
...
I heard on ABC news that the Navy Seals used "Gyro Stabalized" rifles
to take out the pirates.

I've never seen such a rifle..anyone know what she was talking about?

It was either the best shots on earth, or we have not heard the whole
story of the Pirate shots.

What is the best Pirate killing rifle?

Joe

I heard the same thing on ABC... interesting.

--
"j" ganz @@
www.sailnow.com


Have not heard of this before but if you can have gyro-stabilized
binoculars I would think gyro-stabilizsing a large weapon would be a
simple problem.


I think you thought wrong on this one G.

Gyro stabilizing binocs involves movinh a tiny mirror.
A gyro stabilized gun would be a massively different thing.

Richard



Duh! Richard you aren't too bright. In order for a gyro stabilized rifle to
work it would be required to remain still as the ship moved under it. A
heavy enough gyro would do an admirable job of keeping the rifle from moving
as the ship moved under it. It would take a little more effort to get it
sighted on the target but, once sighted, it should remain sighted.

But firing ship to ship adds a second dimension. No gyro stabilized rifle is
going to take into account the other vessel's movement relative to it. This
is where the human factor comes in. Kentucky windage and all that as the
sniper's telescope views the same spot as the pirate vessel moves up and
down and drifts with the seas. Even a gyro stabilized rifle would be
extremely difficult to shoot accurately ship to ship. Those seals must be
crack shots for sure.

I know all this because I've watch "The Unit" DVDs.

Wilbur Hubbard

On Fri, 17 Apr 2009 10:14:57 -0700, Joe wrote:

I heard on ABC news that the Navy Seals used "Gyro Stabalized" rifles to
take out the pirates.

same concept as a motion-control camera system, a series of gyros null
out motion by way of manipulating gyroscopic precession forces

another Canadian invention by the way

you're welcome...

"mr.b" wrote in message
m...
On Fri, 17 Apr 2009 10:14:57 -0700, Joe wrote:

I heard on ABC news that the Navy Seals used "Gyro Stabalized" rifles to
take out the pirates.

same concept as a motion-control camera system, a series of gyros null
out motion by way of manipulating gyroscopic precession forces

All gyros do is indicate an absolute vector in space. If they are
precessing, then they lost their absolute vector. The mechanical gyros are
mounted so they experience no force at all, their position is read relative
to the frame they are housed in. Laser ring gyros don't precess and exert no
force.


another Canadian invention by the way

As was fire, the wheel and time travel.


you're welcome...

No, you're welcome!

In article , Joe wrote:
I heard on ABC news that the Navy Seals used "Gyro Stabalized" rifles
to take out the pirates.

I've never seen such a rifle..anyone know what she was talking about?

A quick Google found another forum discussing this. One of the posters
suggests that the rifle isn't stabilised, it's the telescopic sites that
are stabilised. It's also suggested that this is what they use to snipe
from helicopters.

That's what I found on Google, I know nothing of guns because our
government won't let us have them.

Justin.

--
Justin C, by the sea.

On Sat, 18 Apr 2009 10:44:11 -0000, Justin C
wrote:

One of the posters
suggests that the rifle isn't stabilised, it's the telescopic sites that
are stabilised.

Sure. The rifle waves like a conductors baton, while the crosshairs
remain fixed on a point in space. This will do no good whatever.

Casady

On Fri, 17 Apr 2009 10:14:57 -0700 (PDT), Joe
wrote:

I heard on ABC news that the Navy Seals used "Gyro Stabalized" rifles
to take out the pirates.

I've never seen such a rifle..anyone know what she was talking about?

It was either the best shots on earth, or we have not heard the whole
story of the Pirate shots.

What is the best Pirate killing rifle?

Joe

It was probably either the M82A1 .50 cal or the MK11 .30. Probably
the M82A1 because it would punch through the hull or spray shield if
necessary. The only stabilization is in the reporters minds. They
keep going in a straight line when the story curves into territory
they don't understand. I would not be surprised to learn they had
multiple shooters per pirate or that each pirate had multiple hits.