The Wire In Wire Guided Missiles

B

Bret Cahill

Guest
Back during the cold war some EE said that he had little faith in any
radio controlled missile. The only thing you could trust was a wire
guided missile. He added, it must be really strong wire . . .

I'm guessing it comes off a reel axially like the fishing reel.


Bret Cahill
 
"Bret Cahill"
Back during the cold war some EE said that he had little faith in any
radio controlled missile. The only thing you could trust was a wire
guided missile. He added, it must be really strong wire . . .

I'm guessing it comes off a reel axially like the fishing reel.
Click to expand...

** There is no high speed spinning reel, rotational inertia is way too high.

AFAIK - the wire comes off a fixed bobbin, sideways.

The technique is still widely used for anti-tank weapons with ranges up to
3.5 kms. The best of them can punch a hole right through 0.5 metre thick
armour plate, killing the crew inside.

Heaps of details on wiki.


..... Phil
 
On 2012-07-06, Bret Cahill <Bret_E_Cahill@yahoo.com> wrote:
Back during the cold war some EE said that he had little faith in any
radio controlled missile. The only thing you could trust was a wire
guided missile. He added, it must be really strong wire . . .

I'm guessing it comes off a reel axially like the fishing reel.
Click to expand...
Yeah, like a spinning reel, not like a fly reel. All the diagrams
I've seen show that.

This photo shows a TOW missile with two wires spiralling off the back
http://en.wikipedia.org/wiki/File:ATGM_Stryker_firing_a_TOW_misile.jpg

I'm told that the Scorpion tank's Stinger missiles use a fine gauge
coaxial wire for a video feed and control.

I wonder if any missiles use optical fibre instead of wire, it should
work for something like (IIRC) MILAN where the sustainer and steering jets
are off-axis and forward of the spool, well once the booster change
has finished firing. maybe that start of the fibre would need an
ablative coating to protect against the booster flame during launch.

--
⚂⚃ 100% natural.

--- Posted via news://freenews.netfront.net/ - Complaints to news@netfront.net ---
 
"fungus"
Phil Allison wrote:

** There is no high speed spinning reel, rotational inertia is way too
high.


Yep. Imagine how fast it would have to spin
to keep up with a rocket. It would self
destruct.
Click to expand...

** Long before that happened, inertia would cause the hair fine wire to
break.


nb. This is the reason that CD drives
topped out at 56x speed. Above that the
inertial forces can rip the CDs apart.

Mythbusters did an episode on it.
Click to expand...

** Yep, "centrifugal" force is a killer.

Even solid steel flywheels and giant, power station alternators have strict
rpm limits to prevent disastrous self destruction.

As do humble, bench grinding wheels.



..... Phil
 
On Fri, 06 Jul 2012 16:50:57 +1000, Phil Allison <phil_a@tpg.com.au> wrote:

"Bret Cahill"

Back during the cold war some EE said that he had little faith in any
radio controlled missile. The only thing you could trust was a wire
guided missile. He added, it must be really strong wire . . .

I'm guessing it comes off a reel axially like the fishing reel.


** There is no high speed spinning reel, rotational inertia is way too
high.

AFAIK - the wire comes off a fixed bobbin, sideways.

The technique is still widely used for anti-tank weapons with ranges up
to
3.5 kms. The best of them can punch a hole right through 0.5 metre thick
armour plate, killing the crew inside.

Heaps of details on wiki.


.... Phil
Click to expand...
Also, the bobbins are often (always?) cone shaped to assist the wire take
off
--
 
On 6/07/2012 1:46 PM, Bret Cahill wrote:
Back during the cold war some EE said that he had little faith in any
radio controlled missile. The only thing you could trust was a wire
guided missile. He added, it must be really strong wire . . .
Click to expand...
Don't forget about the torpedoes... :)

--
@~@ Remain silent. Nothing from soldiers and magicians is real!
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/( _ )\ May the Force and farces be with you!
^ ^ (x86_64 Ubuntu 9.10) Linux 2.6.39.3
不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA):
http://www.swd.gov.hk/tc/index/site_pubsvc/page_socsecu/sub_addressesa
 
On Friday, July 6, 2012 8:50:57 AM UTC+2, Phil Allison wrote:
** There is no high speed spinning reel, rotational inertia is way too high.
Click to expand...
Yep. Imagine how fast it would have to spin
to keep up with a rocket. It would self
destruct.

nb. This is the reason that CD drives
topped out at 56x speed. Above that the
inertial forces can rip the CDs apart.

Mythbusters did an episode on it.
 
On 6 Jul 2012 07:11:14 GMT, Jasen Betts <jasen@xnet.co.nz> wrote:

On 2012-07-06, Bret Cahill <Bret_E_Cahill@yahoo.com> wrote:
Back during the cold war some EE said that he had little faith in any
radio controlled missile. The only thing you could trust was a wire
guided missile. He added, it must be really strong wire . . .

I'm guessing it comes off a reel axially like the fishing reel.

Yeah, like a spinning reel, not like a fly reel. All the diagrams
I've seen show that.

This photo shows a TOW missile with two wires spiralling off the back
http://en.wikipedia.org/wiki/File:ATGM_Stryker_firing_a_TOW_misile.jpg
Click to expand...
I designed several hybrid circuits for the TOW missile when I managed
the engineering department at Dickson Electronics, so I was a guest at
numerous test firings.

[snip]

...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.
 
On Thursday, July 5, 2012 11:50:57 PM UTC-7, Phil Allison wrote:
"Bret Cahill"

Back during the cold war some EE said that he had little faith in any
radio controlled missile. The only thing you could trust was a wire
guided missile. He added, it must be really strong wire . . .

I'm guessing it comes off a reel axially like the fishing reel.


** There is no high speed spinning reel, rotational inertia is way too high.

AFAIK - the wire comes off a fixed bobbin, sideways.
Click to expand...
Yes; the bobbin is fixed, and the wire comes from the CENTER of the
ball-of-string bobbin. No rotating reel, just slightly curly wire from
the inside of a little can.

Your wire, of course, is not a perfect communication channel; if it
drapes over grass, all is fine. If it dips into a salt marsh, not so good.
 
On Mon, 16 Jul 2012 17:47:18 +0000 (UTC), Cydrome Leader
<presence@MUNGEpanix.com> wrote:

Jim Thompson <To-Email-Use-The-Envelope-Icon@on-my-web-site.com> wrote:
On 6 Jul 2012 07:11:14 GMT, Jasen Betts <jasen@xnet.co.nz> wrote:

On 2012-07-06, Bret Cahill <Bret_E_Cahill@yahoo.com> wrote:
Back during the cold war some EE said that he had little faith in any
radio controlled missile. The only thing you could trust was a wire
guided missile. He added, it must be really strong wire . . .

I'm guessing it comes off a reel axially like the fishing reel.

Yeah, like a spinning reel, not like a fly reel. All the diagrams
I've seen show that.

This photo shows a TOW missile with two wires spiralling off the back
http://en.wikipedia.org/wiki/File:ATGM_Stryker_firing_a_TOW_misile.jpg

I designed several hybrid circuits for the TOW missile when I managed
the engineering department at Dickson Electronics, so I was a guest at
numerous test firings.

Any fun stories about that?
Click to expand...
Not really. Every firing I witnessed was letter-perfect.

Only "fun" thing was the electronics are in a stack of round PCB's.
The assembly is shoved inside the missile tube, then the tube is
compressed _magnetically_ ! One hell of a shock! They managed to
kill some of other suppliers components, but none of my hybrids ever
failed. So they loved me ;-)

...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.
 
Jim Thompson <To-Email-Use-The-Envelope-Icon@on-my-web-site.com> wrote:
On 6 Jul 2012 07:11:14 GMT, Jasen Betts <jasen@xnet.co.nz> wrote:

On 2012-07-06, Bret Cahill <Bret_E_Cahill@yahoo.com> wrote:
Back during the cold war some EE said that he had little faith in any
radio controlled missile. The only thing you could trust was a wire
guided missile. He added, it must be really strong wire . . .

I'm guessing it comes off a reel axially like the fishing reel.

Yeah, like a spinning reel, not like a fly reel. All the diagrams
I've seen show that.

This photo shows a TOW missile with two wires spiralling off the back
http://en.wikipedia.org/wiki/File:ATGM_Stryker_firing_a_TOW_misile.jpg

I designed several hybrid circuits for the TOW missile when I managed
the engineering department at Dickson Electronics, so I was a guest at
numerous test firings.
Click to expand...
Any fun stories about that?
 
On 2012-07-16, Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:
On Mon, 16 Jul 2012 17:47:18 +0000 (UTC), Cydrome Leader
presence@MUNGEpanix.com> wrote:

Jim Thompson <To-Email-Use-The-Envelope-Icon@on-my-web-site.com> wrote:
On 6 Jul 2012 07:11:14 GMT, Jasen Betts <jasen@xnet.co.nz> wrote:

On 2012-07-06, Bret Cahill <Bret_E_Cahill@yahoo.com> wrote:
Back during the cold war some EE said that he had little faith in any
radio controlled missile. The only thing you could trust was a wire
guided missile. He added, it must be really strong wire . . .

I'm guessing it comes off a reel axially like the fishing reel.

Yeah, like a spinning reel, not like a fly reel. All the diagrams
I've seen show that.

This photo shows a TOW missile with two wires spiralling off the back
http://en.wikipedia.org/wiki/File:ATGM_Stryker_firing_a_TOW_misile.jpg

I designed several hybrid circuits for the TOW missile when I managed
the engineering department at Dickson Electronics, so I was a guest at
numerous test firings.

Any fun stories about that?


Not really. Every firing I witnessed was letter-perfect.

Only "fun" thing was the electronics are in a stack of round PCB's.
The assembly is shoved inside the missile tube, then the tube is
compressed _magnetically_ ! One hell of a shock! They managed to
kill some of other suppliers components, but none of my hybrids ever
failed. So they loved me ;-)
Click to expand...
Magnetically like a coin shrinker? I guess it takes a smaller pulse to "shrink" a
hollow tube than a solid disc.


--
⚂⚃ 100% natural

--- Posted via news://freenews.netfront.net/ - Complaints to news@netfront.net ---
 
On 17 Jul 2012 11:28:13 GMT, Jasen Betts <jasen@xnet.co.nz> wrote:

On 2012-07-16, Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:
On Mon, 16 Jul 2012 17:47:18 +0000 (UTC), Cydrome Leader
presence@MUNGEpanix.com> wrote:

Jim Thompson <To-Email-Use-The-Envelope-Icon@on-my-web-site.com> wrote:
On 6 Jul 2012 07:11:14 GMT, Jasen Betts <jasen@xnet.co.nz> wrote:

On 2012-07-06, Bret Cahill <Bret_E_Cahill@yahoo.com> wrote:
Back during the cold war some EE said that he had little faith in any
radio controlled missile. The only thing you could trust was a wire
guided missile. He added, it must be really strong wire . . .

I'm guessing it comes off a reel axially like the fishing reel.

Yeah, like a spinning reel, not like a fly reel. All the diagrams
I've seen show that.

This photo shows a TOW missile with two wires spiralling off the back
http://en.wikipedia.org/wiki/File:ATGM_Stryker_firing_a_TOW_misile.jpg

I designed several hybrid circuits for the TOW missile when I managed
the engineering department at Dickson Electronics, so I was a guest at
numerous test firings.

Any fun stories about that?


Not really. Every firing I witnessed was letter-perfect.

Only "fun" thing was the electronics are in a stack of round PCB's.
The assembly is shoved inside the missile tube, then the tube is
compressed _magnetically_ ! One hell of a shock! They managed to
kill some of other suppliers components, but none of my hybrids ever
failed. So they loved me ;-)

Magnetically like a coin shrinker? I guess it takes a smaller pulse to "shrink" a
hollow tube than a solid disc.
Click to expand...
Yep. They called it a "magneformer".

...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.
 
Jim Thompson <To-Email-Use-The-Envelope-Icon@on-my-web-site.com> wrote:
On Mon, 16 Jul 2012 17:47:18 +0000 (UTC), Cydrome Leader
presence@MUNGEpanix.com> wrote:

Jim Thompson <To-Email-Use-The-Envelope-Icon@on-my-web-site.com> wrote:
On 6 Jul 2012 07:11:14 GMT, Jasen Betts <jasen@xnet.co.nz> wrote:

On 2012-07-06, Bret Cahill <Bret_E_Cahill@yahoo.com> wrote:
Back during the cold war some EE said that he had little faith in any
radio controlled missile. The only thing you could trust was a wire
guided missile. He added, it must be really strong wire . . .

I'm guessing it comes off a reel axially like the fishing reel.

Yeah, like a spinning reel, not like a fly reel. All the diagrams
I've seen show that.

This photo shows a TOW missile with two wires spiralling off the back
http://en.wikipedia.org/wiki/File:ATGM_Stryker_firing_a_TOW_misile.jpg

I designed several hybrid circuits for the TOW missile when I managed
the engineering department at Dickson Electronics, so I was a guest at
numerous test firings.

Any fun stories about that?


Not really. Every firing I witnessed was letter-perfect.

Only "fun" thing was the electronics are in a stack of round PCB's.
The assembly is shoved inside the missile tube, then the tube is
compressed _magnetically_ ! One hell of a shock! They managed to
kill some of other suppliers components, but none of my hybrids ever
failed. So they loved me ;-)
Click to expand...
exciting! I made a magneformer, and did some coin crushing years ago. I
should see if the caps are still good. I've not really figure out how to
dispose of them when they finally burst as they're about the size of a two
drawer filing cabinet, but much heavier. Not sure the scrappers would grab
them if they're bleeding out in the alley.
 
"Bret Cahill" wrote in message
news:c443c6e3-2d04-406a-aacf-23e6a72a22b6@re8g2000pbc.googlegroups.com...

Back during the cold war some EE said that he had little faith in any
radio controlled missile. The only thing you could trust was a wire
guided missile. He added, it must be really strong wire . . .

I'm guessing it comes off a reel axially like the fishing reel.


Bret Cahill


***Not much more than a decade or so ago, some of the salvage & surplus
dealers were advertising reels of that wire in various electronics hobby
mags.
 
On Tuesday, July 17, 2012 6:47:44 PM UTC+2, Cydrome Leader wrote:
exciting! I made a magneformer, and did some coin crushing years ago. I
should see if the caps are still good. I've not really figure out how to
dispose of them when they finally burst as they're about the size of a two
drawer filing cabinet, but much heavier. Not sure the scrappers would grab
them if they're bleeding out in the alley.
Click to expand...
Connect the power supply in reverse and
they might dispose of themselves.
 
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