Zuluaviator994
Posts: 319
Joined: Tue Mar 25, 2008 9:50 pm

Boeing Fires Solid-state Laser

Wed Jun 04, 2008 12:25 am

http://www.boeing.com/news/releases/2008/q2/080603a_nr.html
"ST. LOUIS, June 03, 2008 -- The Boeing Company [NYSE: BA] fired its new thin-disk laser system repeatedly in recent tests, achieving the highest known simultaneous power, beam quality and run time for any solid-state laser to date.
In each laser firing at Boeing's facility in West Hills, Calif., the high-energy laser achieved power levels of over 25 kilowatts for multi-second durations, with a measured beam quality suitable for a tactical weapon system. The Boeing laser integrates multiple thin-disk lasers into a single system. Through these successful tests, the Boeing team has proven the concept of scalability to a 100-kilowatt-class system based on the same architecture and technology.
"Solid-state lasers will revolutionize the battlefield by giving the warfighter an ultra-precision engagement capability that can dramatically reduce collateral damage," said Scott Fancher, vice president and general manager of Boeing Missile Defense Systems. "These successful tests show that Boeing has made solid progress toward making this revolutionary capability a reality."
The thin-disk laser is an initiative to demonstrate that solid-state laser technologies are now ready to move out of the laboratory and into full development as weapon systems. Solid-state lasers are powered by electricity, making them highly mobile and supportable on the battlefield. The Boeing laser represents the most electrically efficient solid-state laser technology known. The system is designed to meet the rapid-fire, rapid-retargeting requirements of area-defense, anti-missile and anti-mortar tactical high-energy laser systems. It is also ideal for non-lethal, ultra-precision strike missions urgently needed by warfighters in war zones.
"This accomplishment demonstrates Boeing's commitment to advancing the state of the art in directed energy technology," said Gary Fitzmire, vice president and program director of Boeing Directed Energy Systems. "These successful tests are a significant milestone toward providing reliable and supportable lasers to U.S. warfighters."
Boeing's approach incorporates a series of commercial-off-the-shelf, state-of-the-art lasers used in the automotive industry. These industrial lasers have demonstrated exceedingly high reliability, supportability and maintainability.
A high-power solid-state laser will damage, disable or destroy targets at the speed of light, with little to no collateral damage, supporting missions on the battlefield and in urban operations."

Good to see Boeing making some progress with this project Big grin
If Speed is life, Altitude is life insurance. No one has ever collided with the sky.
 
ikramerica
Posts: 13764
Joined: Mon May 23, 2005 9:33 am

RE: Boeing Fires Solid-state Laser

Wed Jun 04, 2008 12:30 am

No big deal, they did this in "Real Genius" 20 years ago. It makes great popcorn.

Oh, and I don't think this goes in the civil av forum.  Wink
Of all the things to worry about... the Wookie has no pants.
 
TedTAce
Posts: 9098
Joined: Sun Mar 27, 2005 12:31 am

RE: Boeing Fires Solid-state Laser

Wed Jun 04, 2008 7:38 am

Can I buy one @ Walmart yet? I'll take 3!!
This space intentionally left blank
 
F27Friendship
Posts: 1098
Joined: Sat Jul 14, 2007 11:45 pm

RE: Boeing Fires Solid-state Laser

Wed Jun 04, 2008 9:44 am

the future is here?

I think the most interesting application is defence against incoming missiles and mortars.
With a weapon this precise, combined with accurate tracking, it is like a laser shield.
 
nomadd22
Posts: 1566
Joined: Fri Feb 22, 2008 7:42 pm

RE: Boeing Fires Solid-state Laser

Wed Jun 04, 2008 11:22 am

The next war should look pretty cool with all the planes and missles chrome plated.
Anon
 
F27Friendship
Posts: 1098
Joined: Sat Jul 14, 2007 11:45 pm

RE: Boeing Fires Solid-state Laser

Wed Jun 04, 2008 12:38 pm



Quoting Nomadd22 (Reply 7):
The next war should look pretty cool with all the planes and missles chrome plated.

war is never cool my friend
 
nomadd22
Posts: 1566
Joined: Fri Feb 22, 2008 7:42 pm

RE: Boeing Fires Solid-state Laser

Wed Jun 04, 2008 3:02 pm



Quoting F27Friendship (Reply 8):
war is never cool my friend

If you had a comment on my obvious reference to shielding missiles with heat resistant highly reflective materials to protect against lasers, it would have been worth posting here.

If you want to preach to people you know nothing about, there are more suitable forums.
Anon
 
F27Friendship
Posts: 1098
Joined: Sat Jul 14, 2007 11:45 pm

RE: Boeing Fires Solid-state Laser

Wed Jun 04, 2008 4:17 pm



Quoting Nomadd22 (Reply 9):
If you had a comment on my obvious reference to shielding missiles with heat resistant highly reflective materials to protect against lasers, it would have been worth posting here.

If you want to preach to people you know nothing about, there are more suitable forums.

if you are going to comment on serious things like war like a 11 year old child, there are also more suitable forums for you.
 
DLPMMM
Posts: 2122
Joined: Wed Apr 20, 2005 12:34 am

RE: Boeing Fires Solid-state Laser

Wed Jun 04, 2008 4:42 pm



Quoting F27Friendship (Reply 6):
I think the most interesting application is defence against incoming missiles and mortars.
With a weapon this precise, combined with accurate tracking, it is like a laser shield.

Actually it is a boondoggle with little to no real military potential.

Their first objective is to replace the COIL laser in the ABL, but that is a very stupid program WRT actual implementation in a combat environment.

The laser will still have limited range due to atmospherics.

While it is good technology, the actual applications with the most potential will be industrial, not military.

FYI, the actual laser tested here is a Yb doped core YAG undoped YAG cladded thin disc laser where the discs are roughly octaginally shapped and pumped by laser diode bar arrays through the thin edges of the undoped cladding.

It lases in the near infra-red and has a very low quantum defect, since it is also pumped in the near infra-red. This allows for a very effecient energy transfer without heat build-up in the discs. The thin disc's also has a large surface to volume ratio that allows for the disappation of the residual heat.

Quoting Nomadd22 (Reply 7):
The next war should look pretty cool with all the planes and missles chrome plated.

You have hit the nail on the head as far as effective countermeasures. This is why I said the program is a military boondoggle. It could end up being a very cost effective competitor to alot of industrial cutting and welding systems though.
 
nomadd22
Posts: 1566
Joined: Fri Feb 22, 2008 7:42 pm

RE: Boeing Fires Solid-state Laser

Wed Jun 04, 2008 7:16 pm



Quoting DLPMMM (Reply 11):
The laser will still have limited range due to atmospherics.

Adaptive optics might be good for that monster ABL but might not be too practical for smaller tactical systems. You might only have five seconds or so to acquire and destroy mortars and small missile from a land base.
Any idea how large the scaled up 100kw modules might be? 10 of them should be able to replace the 6 COIL modules and I'd guess the efficiency of the solid states would be better than the chemical ones.
Anon
 
F27Friendship
Posts: 1098
Joined: Sat Jul 14, 2007 11:45 pm

RE: Boeing Fires Solid-state Laser

Wed Jun 04, 2008 8:09 pm



Quoting DLPMMM (Reply 8):
Actually it is a boondoggle with little to no real military potential.

why won't it be suitable as a landbased goalkeeper or phalanx? Or replace the goalkeeper and phalanx for that matter
 
MissedApproach
Posts: 678
Joined: Thu Oct 14, 2004 10:12 am

RE: Boeing Fires Solid-state Laser

Thu Jun 05, 2008 2:44 am



Quoting F27Friendship (Reply 10):
replace the goalkeeper and phalanx

The problems with directed energy as a weapon is that the energy will do three things when it strikes the target- reflect, absorb, & transmit. Absorption & transmittance of energy will have the same effect in this application, but reflection is a problem, & metal reflects laser energy very well. Gloss paint does a good job of that too. Another lesser consideration is atmospheric attenuation, due to suspended dust particles & water droplets.
For the foreseeable future, projectile weapons are more predictable, reliable... and cheaper, especially against unarmoured targets like missiles & airplanes.
Can you hear me now?
 
F27Friendship
Posts: 1098
Joined: Sat Jul 14, 2007 11:45 pm

RE: Boeing Fires Solid-state Laser

Thu Jun 05, 2008 6:27 am



Quoting MissedApproach (Reply 11):
The problems with directed energy as a weapon is that the energy will do three things when it strikes the target- reflect, absorb, & transmit. Absorption & transmittance of energy will have the same effect in this application, but reflection is a problem, & metal reflects laser energy very well. Gloss paint does a good job of that too. Another lesser consideration is atmospheric attenuation, due to suspended dust particles & water droplets.
For the foreseeable future, projectile weapons are more predictable, reliable... and cheaper, especially against unarmoured targets like missiles & airplanes.

it is very hard to keep a nice finish on a projectile that is fired up-on a target (how many stealth missiles do you know for example?) Atmospheric influence will be minimal as the scenario I mentioned is at close range.
 
rwessel
Posts: 2448
Joined: Tue Jan 16, 2007 3:47 pm

RE: Boeing Fires Solid-state Laser

Thu Jun 05, 2008 7:19 am



Quoting MissedApproach (Reply 11):
The problems with directed energy as a weapon is that the energy will do three things when it strikes the target- reflect, absorb, & transmit. Absorption & transmittance of energy will have the same effect in this application, but reflection is a problem, & metal reflects laser energy very well. Gloss paint does a good job of that too.

Well, that depends a fair bit on wavelength. For example, the wavelength of the COIL laser in the ABL is well into the IR, and is very well absorbed by most metals, no matter the finish, unlike visible light wavelengths. Certain silica crystal substances (IOW some types of glass), OTOH, do reflect those wavelengths rather well.
 
nomadd22
Posts: 1566
Joined: Fri Feb 22, 2008 7:42 pm

RE: Boeing Fires Solid-state Laser

Thu Jun 05, 2008 11:27 am



Quoting Rwessel (Reply 13):
Well, that depends a fair bit on wavelength. For example, the wavelength of the COIL laser in the ABL is well into the IR, and is very well absorbed by most metals, no matter the finish, unlike visible light wavelengths. Certain silica crystal substances (IOW some types of glass), OTOH, do reflect those wavelengths rather well.

The trouble is, the further into the infrared you go, the harder it is to keep a tight focus through the atmosphere. Of course, any frequency is going to have conditions where it won't travel well.
The ABL will be mostly above the weather shooting at targets above the weather, so it shouldn't have that much to worry about. But ground based and tactical air based lasers will never be too reliable because of dust and moisture in the air.
I don't think I'd want to bet the farm on a system that was usefull 50% of the time.
Anon
 
DLPMMM
Posts: 2122
Joined: Wed Apr 20, 2005 12:34 am

RE: Boeing Fires Solid-state Laser

Thu Jun 05, 2008 12:28 pm



Quoting Nomadd22 (Reply 14):
I don't think I'd want to bet the farm on a system that was usefull 50% of the time.

Me either, and I think your 50% effective usefullness is waaaay toooo high.

Quoting Rwessel (Reply 13):



Quoting Rwessel (Reply 13):
Well, that depends a fair bit on wavelength. For example, the wavelength of the COIL laser in the ABL is well into the IR,

You are right that the COIL laser is in the mid-IR. The thin disc laser is very near IR at just over 1 micron.

Quoting F27Friendship (Reply 12):
it is very hard to keep a nice finish on a projectile that is fired up-on a target (how many stealth missiles do you know for example?) Atmospheric influence will be minimal as the scenario I mentioned is at close range.

The system is not designed for and will never be any good for mortars or short range missles. Those types of projectiles do not have enough time of flight for even a 100KW beam to be effective, much less projectile aquisition and targeting.

Phalanx works by just throwing up a curtain of metal (bullets) that any projectile would have to fly through to reach the ship. The radar system and targeting does not have to be very accurate or timely.

The laser would have to keep the beam focussed on the exact same spot of the projectile for multiple seconds. Not easy when the projectile is approaching even at sub-sonic speeds.

I think you have been watching too many of our Hollywood movies and McGuyver episodes.
 
nomadd22
Posts: 1566
Joined: Fri Feb 22, 2008 7:42 pm

RE: Boeing Fires Solid-state Laser

Thu Jun 05, 2008 1:51 pm



Quoting DLPMMM (Reply 15):
The system is not designed for and will never be any good for mortars or short range missles.

I wouldn't be too quick. You might never have a high duty cycle MW laser on the back of a jeep, but some folks are pretty serious about developing extremly short pulse, high power lasers for short range defense. With high enough power in millisecond pulses you can cause nice little explosions from target material vaporizing and wouldn't have to transfer enough energy to burn your way through.
Anon
 
DLPMMM
Posts: 2122
Joined: Wed Apr 20, 2005 12:34 am

RE: Boeing Fires Solid-state Laser

Thu Jun 05, 2008 3:14 pm



Quoting Nomadd22 (Reply 16):
I wouldn't be too quick. You might never have a high duty cycle MW laser on the back of a jeep, but some folks are pretty serious about developing extremly short pulse, high power lasers for short range defense. With high enough power in millisecond pulses you can cause nice little explosions from target material vaporizing and wouldn't have to transfer enough energy to burn your way through.

You would need an order of magnitude increase in power above their hoped for scaled up version of the thin disc laser's output to even have a hope. Then with the necessary targeting and tracking (which would be good business for me) as well as the beam steering challanges combined with the limited flight timeframe, kenetic options would be much more effective and cheaper.

The military brass and congress think it's a sexy program and so they fund it, but they really have very little idea of what they are funding.

I make some money off it, so I have no problem with the research, It will have good non-military applications in the long run.

BUT... there ain't no way this system will ever work well as a short range air defense system.

It is alot like the LLNL fusion program, no one ever really thought it would break even on an energy in/energy out basis, but it was sold as a program on the basis of reaching break-even (and eventually clean power generation). In actuality, it has been very useful in advancing basic laser technology in the USA and providing the DOD with modeling programs for nuke detonations without actually having to do real worlh H bomb tests.
 
User avatar
N328KF
Posts: 5810
Joined: Tue May 25, 2004 3:50 am

RE: Boeing Fires Solid-state Laser

Thu Jun 05, 2008 3:18 pm



Quoting DLPMMM (Reply 15):
The system is not designed for and will never be any good for mortars or short range missles. Those types of projectiles do not have enough time of flight for even a 100KW beam to be effective, much less projectile aquisition and targeting.

This is why THEL/MTHEL is a much better platform to take on exactly the role you you mentioned. It's a directed-energy weapon with a proven success rate. The only thing wrong with that platform is that it wasn't funded.
When they call the roll in the Senate, the Senators do not know whether to answer 'Present' or 'Not guilty.' -Theodore Roosevelt
 
F27Friendship
Posts: 1098
Joined: Sat Jul 14, 2007 11:45 pm

RE: Boeing Fires Solid-state Laser

Thu Jun 05, 2008 7:58 pm



Quoting DLPMMM (Reply 15):
The laser would have to keep the beam focussed on the exact same spot of the projectile for multiple seconds. Not easy when the projectile is approaching even at sub-sonic speeds.

I think you have been watching too many of our Hollywood movies and McGuyver episodes.

I think I have been involved in aerospace long enough to know there are numerous examples of very accurate beam stearing. For example the laser datalink that the nuclear subs use or other space probes.

just because you have a fixed conservative mind does not mean anything. You would probably belong to the same group of people that would call the wright brothers nuts in 1900.

Quoting Nomadd22 (Reply 16):
I wouldn't be too quick. You might never have a high duty cycle MW laser on the back of a jeep, but some folks are pretty serious about developing extremly short pulse, high power lasers for short range defense. With high enough power in millisecond pulses you can cause nice little explosions from target material vaporizing and wouldn't have to transfer enough energy to burn your way through.

this is indeed how it would look like, I think the Israeli's already have something similar
 
F27Friendship
Posts: 1098
Joined: Sat Jul 14, 2007 11:45 pm

RE: Boeing Fires Solid-state Laser

Thu Jun 05, 2008 8:00 pm

 
DLPMMM
Posts: 2122
Joined: Wed Apr 20, 2005 12:34 am

RE: Boeing Fires Solid-state Laser

Thu Jun 05, 2008 9:26 pm



Quoting F27Friendship (Reply 19):
I think I have been involved in aerospace long enough to know there are numerous examples of very accurate beam stearing. For example the laser datalink that the nuclear subs use or other space probes.

just because you have a fixed conservative mind does not mean anything. You would probably belong to the same group of people that would call the wright brothers nuts in 1900.

I've only worked on lasers for over 20 years and worked on Boeing's thin dics laser program as well.

The THEL is a mid IR laser. The solid state thin disc laser is near IR. Very big difference in the time on target necessary. I look at laser/material reactions every day, how about you?

Comm lasers have nothing to do with the subject at hand as they are relatively low power.

The rest of your post is not worth responding to. Go back to your McGuyver re-runs.
 
F27Friendship
Posts: 1098
Joined: Sat Jul 14, 2007 11:45 pm

RE: Boeing Fires Solid-state Laser

Thu Jun 05, 2008 9:29 pm



Quoting DLPMMM (Reply 21):
I've only worked on lasers for over 20 years and worked on Boeing's thin dics laser program as well.

The THEL is a mid IR laser. The solid state thin disc laser is near IR. Very big difference in the time on target necessary. I look at laser/material reactions every day, how about you?

Comm lasers have nothing to do with the subject at hand as they are relatively low power.

The rest of your post is not worth responding to. Go back to your McGuyver re-runs.

I am not familair with lasers in specific. I am familiar with high precision pointing, navigation and communication.

So if I understand you correctly, it is a property of this particular laser type which makes it unsuitable.

Otherwise, I would like to refer to the link I posted that the idea of lasers for protection against incoming missiles or mortars is neither fiction nor fantasy and appart from the lack of understanding of specific lasers was not far fetched at all.

So let me re-phrase, if you have a laser source, powerful enough, compact enough there is ample technology out there to guide and aim that beam very accurately.

BTW, McGuyver always uses a swiss army knife, nothing fancy, so your frame of reference is a bit off.
 
nomadd22
Posts: 1566
Joined: Fri Feb 22, 2008 7:42 pm

RE: Boeing Fires Solid-state Laser

Thu Jun 05, 2008 10:01 pm



Quoting DLPMMM (Reply 21):

Last I heard THEL took three large trucks to move, and they'd hoped to get it down to one. It was good for 60 shots. Not really too practical for taking out $40 Katyusha rockets. But, like you said, funding is funding.
By the way, it's usually not worth responding to halfwits trying to pass off bits of trivia they picked up as intelligence.
Anon
 
DLPMMM
Posts: 2122
Joined: Wed Apr 20, 2005 12:34 am

RE: Boeing Fires Solid-state Laser

Fri Jun 06, 2008 2:08 am

Quoting Nomadd22 (Reply 23):
Last I heard THEL took three large trucks to move, and they'd hoped to get it down to one. It was good for 60 shots. Not really too practical for taking out $40 Katyusha rockets. But, like you said, funding is funding.
By the way, it's usually not worth responding to halfwits trying to pass off bits of trivia they picked up as intelligence.

Actually it was 8 trucks, but they got the "mobile" version down to 3 or 4 trucks worth.
 

Quoting F27Friendship (Reply 22):
So let me re-phrase, if you have a laser source, powerful enough, compact enough there is ample technology out there to guide and aim that beam very accurately.

BTW, McGuyver always uses a swiss army knife, nothing fancy, so your frame of reference is a bit off.

Oh, I saw an episode of Mcguyver where he made a laser out of a lady's ruby ring and some aluminum foil, focussed the sun with the foil, and blew up the boulders that were blocking the cave enterance.

Lasers are good tools that can do lots of things, but this program is stupid for technical reasons.

Almost as stupid as Boeing's laser based roadside bomb detonator. A multi-million dollar system that is less reliable and less effective than a McMillan .50 cal.

Point being that we have no where near the power necessary or the pointing accuracy compact enough for even prototyping at this point. The beam steering hardware alone is truckloads and requires a virtual life support system to keep it working inconsistantly. The laser aspect.....forget about it for now, kinitic devices (like bullets) are much cheaper, controllable, effevtive, and reliable. This probably will not change for at least another 20 years. Don't believe all the press releases you read about system capabilities.

Sorry about the McGuyver comments, but I am cranky some days. I was young once too like you, and I don't mean that disparagingly. The best advice I can give you is to look at not only the technically feasible, but also consider what is economically feasible and politically feasible. Unless all 3 are present in a program, it is a dead end in the long run.

[Edited 2008-06-05 19:16:30]

[Edited 2008-06-05 19:17:05]
 
F27Friendship
Posts: 1098
Joined: Sat Jul 14, 2007 11:45 pm

RE: Boeing Fires Solid-state Laser

Fri Jun 06, 2008 7:49 am



Quoting DLPMMM (Reply 24):
Lasers are good tools that can do lots of things, but this program is stupid for technical reasons.

Almost as stupid as Boeing's laser based roadside bomb detonator. A multi-million dollar system that is less reliable and less effective than a McMillan .50 cal.

Point being that we have no where near the power necessary or the pointing accuracy compact enough for even prototyping at this point. The beam steering hardware alone is truckloads and requires a virtual life support system to keep it working inconsistantly. The laser aspect.....forget about it for now, kinitic devices (like bullets) are much cheaper, controllable, effevtive, and reliable. This probably will not change for at least another 20 years. Don't believe all the press releases you read about system capabilities.

thanks for your input. I know how long defence programs run and I think 20 years is actually not that far away. Considering that we will whitness it.

Considering beam steering: What about mirrors?

Quoting DLPMMM (Reply 24):
Sorry about the McGuyver comments, but I am cranky some days. I was young once too like you, and I don't mean that disparagingly. The best advice I can give you is to look at not only the technically feasible, but also consider what is economically feasible and politically feasible. Unless all 3 are present in a program, it is a dead end in the long run.

no worries. Being in a conservative world like aerospace engineering, one of the things I try to do is to think out of the box as much as possible. Of course it is necesary to take into account the ecnomical aspect, but doing so in the early stages of technology development would almost certainly kill of anything new.
 
zululima
Posts: 373
Joined: Sat Jul 14, 2007 10:21 am

RE: Boeing Fires Solid-state Laser

Fri Jun 06, 2008 8:45 am



Quoting ZuluAviator994 (Thread starter):
The Boeing laser integrates multiple thin-disk lasers into a single system.

Sound like the Death Star to anyone?
I didn't get a 'Harumph' outta that guy!
 
ContnlEliteCMH
Posts: 1376
Joined: Wed Mar 02, 2005 8:19 am

RE: Boeing Fires Solid-state Laser

Fri Jun 20, 2008 3:12 am



Quoting F27Friendship (Reply 25):
no worries. Being in a conservative world like aerospace engineering, one of the things I try to do is to think out of the box as much as possible. Of course it is necesary to take into account the ecnomical aspect, but doing so in the early stages of technology development would almost certainly kill of anything new.

A piece of advice for you in a fledgling career: it's okay to think of yourself as a visionary who possesses skills and ideas that no one else has. You're probably wrong and you probably have no more vision or skill than the older (and wiser) guys with whom you work, but it's still okay. It's even okay to be a snob with regards to comments about war, etc. However, repeatedly communicating the idea that you're a visionary and the rest are stodgy old automatons just doing a job is a surefire way to make your professional life veeeeery difficult (or even your Web life, for that matter). It's just bad practice.

Take it from somebody who has, at times, learned this lesson the hard way.

Quoting DLPMMM (Reply 17):
You would need an order of magnitude increase in power above their hoped for scaled up version of the thin disc laser's output to even have a hope. Then with the necessary targeting and tracking (which would be good business for me) as well as the beam steering challanges combined with the limited flight timeframe, kenetic options would be much more effective and cheaper.

I'm not a laser expert but I have a little knowledge of energy and power and my first thought was "100 kw? Can that really be enough for a weapon?" I was also thinking, "If they said a megawatt, I'd be more impressed." My gut told me the same things you're saying: from a technical and cost perspective, this is pursuing an untamed ornithoid without cause.
Christianity. Islam. Hinduism. Anthropogenic Global Warming. All are matters of faith!
 
F27Friendship
Posts: 1098
Joined: Sat Jul 14, 2007 11:45 pm

RE: Boeing Fires Solid-state Laser

Fri Jun 20, 2008 4:06 pm



Quoting ContnlEliteCMH (Reply 27):
A piece of advice for you in a fledgling career: it's okay to think of yourself as a visionary who possesses skills and ideas that no one else has. You're probably wrong and you probably have no more vision or skill than the older (and wiser) guys with whom you work, but it's still okay. It's even okay to be a snob with regards to comments about war, etc. However, repeatedly communicating the idea that you're a visionary and the rest are stodgy old automatons just doing a job is a surefire way to make your professional life veeeeery difficult (or even your Web life, for that matter). It's just bad practice.

Take it from somebody who has, at times, learned this lesson the hard way.

this discussion was already over. I don't you to tell me what I should or shouldn't do. Please keep your comments to yourself.
 
nomadd22
Posts: 1566
Joined: Fri Feb 22, 2008 7:42 pm

RE: Boeing Fires Solid-state Laser

Fri Jun 20, 2008 6:03 pm



Quoting ContnlEliteCMH (Reply 27):
"100 kw? Can that really be enough for a weapon?"

A lot of it's just part of the game. Congress is generally too short sighted for long research and development programs with payoffs in the far future. So you knock down a short range rocket or mortar with your 100kw system to let them think they're getting something for their money, so you can continue getting funding.
You wouldn't want DLPMMM doing your public relations work, but he's right. The programs today aren't going to lead to practical, cost efficient systems to reliably shoot down short range ordinance. But they will fund the early research on the various systems needed for the field to continue to advance.
Anon
 
cloudy
Posts: 1613
Joined: Sat Apr 06, 2002 3:23 pm

RE: Boeing Fires Solid-state Laser

Mon Jun 23, 2008 8:37 am



Quoting F27Friendship (Reply 12):
it is very hard to keep a nice finish on a projectile that is fired up-on a target (how many stealth missiles do you know for example?) Atmospheric influence will be minimal as the scenario I mentioned is at close range.

There are stealthy missiles now. The main reason it came to aircraft much sooner is because aircraft are reusable, more expensive, sometimes carry people, and are less stealthy by nature.

A modern cruise missile typically flies below 100 meters and so is hard to catch on radar anyway, without a sophisticated airborn system. Now that cruise missile defense systems are more sophisticated and prevelant, stealth is being considered in cruise missile design. In the future, there may be a tradeoff between stealth and vulnerability to directed-energy weapons. If one wants to hide something, high reflectivity would seem to be a bad way of doing it.

With balistic missiles stealth is pointless. Any opponent capable of engaging a ballistic missile can easily find out its exact moment of launch, launch point, target and trajectory. Most systems designed to protect ballistic missile warheads don't rely on stealth but on decoys and maneuverability.

Anyway, you don't need a perfect finish on a reflective missile unless you are making the modification only for the sake of appearance. Minor blemishes do not significantly reduce reflectivity.

My guess would be a lot of research in this area is classified and so it is difficult for one not involved to judge just how much progress has been made.

Who is online

Users browsing this forum: No registered users and 4 guests