Can a Laser Really Shoot Down a Drone? Watch the US Navy's 30 Second Video!

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    Drone Laser
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Discussion Overview

The discussion revolves around the feasibility and challenges of using laser technology to shoot down drones, as demonstrated by a recent US Navy test. Participants explore various technical, operational, and theoretical aspects of laser weapon systems, including their effectiveness in different environmental conditions and against various targets.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants question the effectiveness of laser beams in adverse weather conditions compared to conventional munitions, which can penetrate clouds and precipitation.
  • Concerns are raised about the power requirements and potential hazards associated with chemical lasers used in military applications.
  • One participant suggests that the test may have involved a drone that was particularly vulnerable to laser damage, raising doubts about the general applicability of the results.
  • Another participant discusses the technical challenges of beam shaping and atmospheric propagation effects, emphasizing the need for precise optical corrections and pulse energy to effectively target moving objects.
  • Countermeasures against laser weapons are mentioned, such as making missiles highly reflective to reduce their vulnerability.
  • There is a discussion about the limitations of existing systems, such as the ABL, which requires significant infrastructure and has specific operational constraints.

Areas of Agreement / Disagreement

Participants express a range of views on the effectiveness and practicality of laser weapons, with no clear consensus on their viability or the extent of their limitations. Multiple competing perspectives on the challenges and potential of laser technology remain present throughout the discussion.

Contextual Notes

Participants note various technical issues, including atmospheric scattering and the need for high energy levels in laser systems. There are also references to specific military applications and the operational context of laser weapons, which may not be fully addressed in the discussion.

Naty1
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So the US Navy has shot down a drone with a Laser... 30 second video is here:

http://www.cbsnews.com/8301-501465_162-20011041-501465.html

Can anyone identify the major obstacles in such an effort. Seems like tracking/radar type software would be very similar to conventional weapons...conventional weapons shells go through clouds, rain, fog,snow and so forth..how about laser beams??
 
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Naty1 said:
Can anyone identify the major obstacles in such an effort
Big, no problem fitting one to a ship but pretty useless otherwise.
Uses lots of power and/or some very unpleasant chemicals

You can destroy a drone with a well aimed half-brick.

Impressive would be hitting a sea-skimming missile at mach3, 10m above the water in the fraction of a second between it coming over the horizon and hitting you.
 
Naty1 said:
Can anyone identify the major obstacles in such an effort.
Yes. The test may have been of the "sitting duck" type in which the drone was particularly susceptible to damage by the laser. It may not be too difficult to "harden" missiles to laser attack, in which case, it would be reckless and wasteful to pursue further development of the laser weapon until such concerns are addressed and dealt with. Of course, such information will be classified, meaning that we have to trust our weapons-developers, military overseers, etc to be honest with us and tell us if the system has serious weaknesses. Any takers on that bet?
 
Naty1 said:
So the US Navy has shot down a drone with a Laser... 30 second video is here:

http://www.cbsnews.com/8301-501465_162-20011041-501465.html

Can anyone identify the major obstacles in such an effort. Seems like tracking/radar type software would be very similar to conventional weapons...conventional weapons shells go through clouds, rain, fog,snow and so forth..how about laser beams??

I worked on two similar systems three lifetimes ago; my information may not be up to date. I worked on the ABL (Boeing) and MTHEL (joint US/Isreali) systems:

http://www.thelivingmoon.com/45jack_files/03files/MTHEL_Mobile_Tactical_High_Energy_Laser.html

http://www.boeing.com/defense-space/military/abl/index.html

Both of those lasers were near-IR chemical lasers:

http://en.wikipedia.org/wiki/Chemical_oxygen_iodine_laser

Out of the numerous technical issues, there were two main classes I worked on: beam shaping/aiming (the lenses and mirrors and tracking movements) and propagation effects (transmission, atmospheric scattering, etc).

Obviously, the main difference is the time to target- that made the tracking easier. The atmospheric scattering placed severe requirements on the optical corrections and initial pulse energy, and how 'pristine' the pulse had to be when it left the 'gun' in order to put sufficient power onto the target.

Then of course, there's countermeasures- just make your missile highly reflective, like I dunno... *unpainted metal*?
 
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The ABL still has some issues, like it needs a 747 to carry it around in, it's run by a chemical laser that redefines HAZMAT (one rumor is that the 747 isn't allowed back into California - it breaks so many OSHA rules).

It was also designed to hit an ICBM just after launch = nice thin metal tubes highly pressurized with explosive fuel and moving in a nice well defined parabolic path.

This thing is intended to defeat the Russian Sizzler sea-skimming missile which is doing Mach3 at 10m above the waves. Even if you hit the thing you have to totally vaporise it or you simply exchange being hit by a missile for being hit by a mach3 lump of metal + explosive + solid rocket propellant!