Laser Incidents With Aircraft On the Rise
EqualSlash writes "High-power laser pointers available for cheap are increasingly finding abuse as the ultimate long-distance weapons of pranksters and vandals. The Federal Aviation Administration says laser events aimed on planes have nearly doubled in the last year, leaping from 1,527 in 2009 to 2,836 in 2010. The highest number of incidents was reported at Los Angeles International Airport, which recorded 102 in 2010. Lasers pointed at cockpits can temporarily blind pilots, forcing them to give up control of an aircraft to their co-pilot or abort a take-off/landing. In March of 2008, unidentified individuals wielding four green laser pointers launched a coordinated attack on six incoming planes at Sydney Airport, which resulted in a ban on all laser pointers in the state of New South Wales."
How do you manage getting a beam of light inside a cockpit that opens facing upward? Aside from banking sharply it doesn't make any sense.
A loop, by its nature, continues. If that didn't make sense, start reading this sentence again.
They'll probably green lasers in the US before they'll ban semi-automatic handguns.
and just beat the shit out of them for being well on their way towards having those fun laser pointers banned completely?
People blind pilots.... using lasers.
- Citizens for Responsible Airport Laws
This is why we can't have nice things. Someone always has to be irresponsible.
...with these **********ing lasers on this **********ing plane!
Lasers are made in a great many colors, but couldn't they notch-filter the predominant linewidths (esp. those attenuated least in the atmosphere)?
Can't we just put laser filters on the cockpit windows (or have the pilots wear laser safety glasses)? Maybe we can't filter *every* color laser (that may block too much normal light), but we could filter the green ones which the article mentions as the more troublesome type.
20 characters max for the password? How will I use my favorite poems as passwords?
So, the biggest threat to airline travel is prankster laser pointer wielding yocals and not some loon putting explosives on a plane or hijacking it?!?
Remember that when you're taking your shoes off, having your personal items picked through and groped by the TSA.
Green lasers are often used for stargazing, since you can use the visible beam to point out specific stars. I wonder how many of these incidents are accidental hits either by idiots^W people who don't know the difference between a plane and a shooting star or who are honestly pointing out constellations while a plane just happens to fly through? Don't attribute to malice what can be explained by stupidity and all that.
Funny may not give karma, but +5 Informative never made anyone snort coffee out their nose.
Lasers pointed at cockpits can temporarily blind pilots
Please cite examples of pilots who have temporarily been "blinded" by a laser.
While it's a nuisance to see someone shine a laser beam around your cockpit, the plane's speed, the shakiness of human hands, and the distance from the person pointing it makes it unlikely that the laser beam will find its way directly into one of the two pupils a pilot may have for more than a fraction of a second.
But America has given up on things like trigonometry, math and science, in favor of bullshit like this. The current situation is 1) Pilot and copilot see red dot jump momentarily around the cockpit and decide to report the incident, 2) Pilot and copilot agree to overstate the harm done to them in an effort to persuade authorities that this is a "serious problem" 3) The media gets hold of the story and distorts it further, screaming for the death penalty for anyone who owns a laser pointer and lives within 10 miles of an airport. But no one is willing to do the math.
Yeah it's irresponsible to point lasers at airplanes. Call me if ever there's a serious incident that puts an aircraft in danger.
Seven puppies were harmed during the making of this post.
The "ban on lasers" is a confusing one.
The last decade the Australian Government has been using this "ban" word like a fad on everything. Its not illegal, its not prohibited... its BANNED.
I'm still trying to figure out what they mean, maybe someone cant have one near an airport or any teenager cant have one but a professor using one for presentation or someone pointing out star constellations is allowed to?
It just seems like a grey area so they make a ban instead of outright illegal.
I went out and purchased a green laser from the USA just before this ban got set in place simply as a middle finger to the Aussie Government. Going out into the middle of nowhere hours from any city and having a light show on a clear night making out you have a lightsaber is cool. Also you can do some great photography with them such as reflecting off water.
Pointing at planes is stupid, do some work and catch the idiots instead of being lazy and making everyone not have a choice.
...by a laser while piloting a helicopter and it's scary as hell. I don't have a solution but I sure wish I did. There are some sick puppies out there that this continues to go on. These people should be arrested and prosecuted but I recognize that it's difficult to impossible to catch these idiots.
How are people able to accurately point a laser at a dude's eyeball in an aircraft moving over 100 mph from a relevant angle of attack through the aircraft's windshield from an unrestricted vantage point? From BELOW the aircraft?
This sounds like a crap story to me.
No sig for you. YOU GET NO SIG!
Actually, it's a lot more complicated than that.
Near my international airport (KSEA for those interested) is a public park on the north end of the airport, from there it is a ridiculously easy shoot into the cockpit with a laser at around 3 miles when aircraft are landing to the north (runways 34). At that range most green lasers beams are actually fairly wide, but still plenty bright, especially to eyes that have spent the last 6 hours acclimated to almost total darkness (pilots routinely turn the lights down at night) Since you bring up geometry, I submit to you that the angle from ground to cockpit at that distance is probably in the 10 degree range. And consider that these aircraft are landing from the south, facing north. The pilot is required to maintain contact with the runway lighting system at all times, including the lights leading up to the runway. If they can see lights 1/2 mile ahead of them, I think they can see the lights 3 miles ahead of them. If you'd like i'll get out my FAR/AIM (FAA rule bible) and quote you the regs.
Now, lets talk the pussies argument. Would you want YOUR pilot to be even 1/4 blinded when operating at 175mph and 300 feet off the ground? Safety says you go around and let your eyes reacclimate. It's not that they could NEVER land the plane, but that given the other stressors already in place, why would you risk it? Remember we are in the plane with you, and we have just as much interest in going home to our families as you do.
My credentials: Commerial rated, Multi-engine and Single-engine, with an unrestricted IFR rating.
Posting AC due to lack of account, long time reader.
They're an annoyance everywhere they're used.
you had me at #!
... don't they have anything better to do, like eat some surfers? And just who gave them the lasers in the first place? Damn Pentagon!
Ok i'll say it are they mounted to sharks?
blarg?
I have to agree. I've heard reports of this for a long time but how is this even possible? Scattering on the windows? They're pointed upwards as well from what I've seen of big planes. Maybe they're talking about small aircraft. I just can't see 1500 incidences a year, though. Maybe the pilots are confusing the phenomena with something else.
This should be on an episode of mythbusters.
Selah.ca. Pause, and calmly think on that.
This is an example of the "fallacy of the transposed conditional" and how people use it to justify legislation that does nothing to address the problem.
See if you can assign a likelihood (high or low) to the following:
Probability that someone has a laser, given that they shined one at an airplane,
Probability that someone shines one at an airplane, given that they have a laser.
The likelihood that anyone having a laser will use it against an airplane is so astronomically small that legislation will have no appreciable effect, but will inconvenience many people.
The logic is precisely backwards, but it sounds like a justification.
Someone should introduce the legislators down under to Bayes Theorem.
This still seems to be happening a lot around Sydney. I noticed that it made it into YSSY ATIS last Thursday night. Approach: EXP INDEPENDENT VISUAL APCH Runway: 34L AND R FOR ARRS AND DEPS Operational Info: PARALLEL RWY OPS IN PROG. INDEPENDENT DEPARTURES IN PROG WIND: 030/15, CROSSWIND MAX 15 KNOTS UNAUTHORISED LASER ACTIVITY REPORTED 07NM ON FINAL Cloud: CAVOK - (Ceiling and Visibility OK) Temperature: 29 QNH: 1010
put a kW class laser on the planes and fire back
It's not just NSW that have banned laser pointers, a laser pointer over 1mw is a banned import into Australia. If you import one, it will be seized by Customs. To legally import one, you must get a firearms license issued by the police in your state of residence. It's against the law in most states (Queensland seem to be the exception) to be in possession of a laser pointer, of any colour, in a public place.
be able to land with the remaining eye?
There was a video on youtube from a news channel that showed what happend when a green laser hit the cockput of a plane/helio but I can't seem to find it. http://www.youtube.com/watch?v=5r5-bMstX6g This is about all I can find. Anyways its not so much the fact that it goes into the pilots eye, it's just that illuminates the cockpit like a disco which then doesn't allow the person to see out side the window.
You think that after traveling a mile or more, a laser beam projects a "dot"? WTF?
It's called lightning and it has been a "temporary blindness" risk that pilots have always been required to contend with.
Of course you're probably more alert the the possibility of lightning when flying near thunderstorms than you will be expecting a laser out of nowhere.
I do tend to believe that the risks are potentially overblown here, based on just how fast laser beams spread and so forth. I think it's more a case of outrage and indignity that some asshole would actually point a laster at a pilot flying an aircraft than it is likely to be something that requires banning the devices entirely and making it a federal offense to use one outdoors at night etc.
Personally I think I might prefer the asshole with the laser pointer over having to land in a thunderstorm.
G.
IAAP and we've had the cockpit lasered before. While it's certainly unlikely that the laser beam will hit your pupils directly, the pressing issue is, you can very quickly lose your night vision when the beam is refracted/scattered by the windshield. On short final (when these idiots are lasering the cockpits) a loss of night vision (likely) or partial blindness (less likely) will jeopardize the safety of everyone aboard during the approach.
Now they only have to ban sharks and we're safe!
We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
No, they don't.
There has not been a single case of a pilot blinded by lasers, nor is it likely there ever will be.
Not only do pilots look at the (rather tall) instrument board most at the time, and don't stare at scenery, but it's also impossible to keep the laser pointer pointed at a moving target at any distance. If anyone were able to do so, don't fine them -- hire them as gunners for the military, because that kind of precision is supernatural.
And at the distance a plane is away, combined with the rather thick windows of a plane, even if a superhuman was able to hit the eye of a pilot for a fraction of a second, it would have far less of an impact than a quick glance at the sun, something people frequently do.
Plain and simple, this is FUD, and another attempt at at the same time scaring people and showing that the powers do something about it.
This is why we can't have nice things. Someone always has to be irresponsible.
Indeed. If you want one of these things for hobby or just for fun, *NOW* is the time to buy, because before too long, you'll need a licence to purchase.
If you want news from today, you have to come back tomorrow.
Maybe they should check to make sure it isn't sharks with lasers!
The problem is not actually blinding pilots, it is that at large enough distances a green laser is a rather distracting giant green spot, which makes it quite hard to see other things, like the runway.
See Wicked Lasers' "Photonic Disruptor."
Not familiar with this specific case, but usually airports are built out of town and developers build houses around them. New people move in to the houses and try to close the airport. Many airports try noise abatement approaches, such as higher flight patterns resulting in steep descents, or altering the landing pattern around problem areas where possible. Unfortunately we have lost a lot of good airports this way. Business owners often choose where to build or work by the quality of the local airport, resulting in a catch 22 for politicians. Many towns are now trying to proactively defeat this problem by zoning around airports as industrial only zones.
I don't know for sure, but seems to me there might be another factor here - duration. Lightning flash quite quickly, maybe a second at the longest. These morons with the lasers, if they happen to have good hand-eye coordination, might be able to track the aircraft pretty well, and keep the laser generally 'focused' on the cockpit windshield for several seconds at a time. I imagine it's sort of the difference between driving with occasional lightning flashes, vs having an oncoming vehicle shining their high-beams in your eyes for 5 or 10 seconds (which, at least for me, feels like an eternity when I'm driving at night, and am having a hard time seeing the road - and in just the wrong situation, might be long enough to cause an accident).
I believe, so far, there have been no fatalities as a result of these clowns, but should an aircraft ever crash, and the flight data recorder has the pilot complaining about being blinded by a laser, this will blow up into a huge media issue.
"Guns are for self defence" is pure myth. Actually it's worse than that, it's idiocy.
If you don't want your family to live in one of the world's most violent and dangerous societies, why do you create and perpetuate it? The rest of us do just fine not shooting each other and we don't live in a permanent paranoid funk.
You can change it if you want to. Protip: Making guns more available isn't the answer.
you had me at #!
Laser pointers have a very narrow specta. I narrow band interference coating can be placed in the airplane windshields at 435 and 660 nanometers.
The cost would be negligible for an airplane. In the meantime glasses with similar coatings would protect pilots.
A ban on lasers would deprive individuals of one of the greatest inventions ever. One of those people may use on in a more productive manner, and if prevented they may never make their contribution to technology.
Problem solved.
-Brenda Make
https://www.youtube.com/c/BrendaEM
Perhaps people who can't deal with momentary distractions shouldn't be pilots? Gods know what they'd do if they ever saw sun reflected from a building, or hit a bird, or saw lightning.
Here is one that I knew about off hand...
http://articles.cnn.com/1997-05-14/us/9705_14_russia.laser_1_laser-device-russian-ship-laser-burns?_s=PM:US
Google will return more.
Sorry about wavelength. Will still work at proper wavelengths as laser light is generally monochromatic. I'm tired.
https://www.youtube.com/c/BrendaEM
Laser pointers are not all that coherent. The beam would likely "paint" the entire airplane at a mile away.
When our name is on the back of your car, we're behind you all the way!
Can't you equip aircraft with slightly more powerful lasers that shine back whenever this happens?
Wouldn't simply polarizing the cockpit windows completely negate this problem? Even polarized sunglasses would work.
...people blind pilots.
When law abiding citizens are unable to buy high powered laser pointers, then only criminals will have high powered laser pointers.
Oh, oops, did I forget the opening tag again?
Airline rules vary, but typically the gun has to be in a case 'designed for holding firearms' and it must be locked.
Get that? It must be locked. NORMAL checked luggage not only doesn't have to be locked, it's not allowed to be locked (so TSA can rifle through it as they please and steal your shit).
So if you want to be able to lock your checked baggage, just fly with a gun. Not only will you be able to lock your gun case, you will be REQUIRED to do so, and anything else you can fit in that gun case can be locked too. I used to know a guy who claimed to always fly with a starter pistol (legal in many jurisdictions) just so he could check a lockable case.
IANAL YMMV
...you'd come across this example of what it does to a pilot's view of a runway.
picpix image polls. create - share - vote. fun!
The damn thing doesn't appear to blind the cat.
Why don't they just issue laser safety glasses to pilots, and they can put them on when the ass-hats arrive?
http://www.thorlabs.us/newgrouppage9.cfm?objectGroup_ID=762
When will there be an MS Flight Sim Fly Red-eye/ Green Laser-in-my-eye Edition?
WARNING: Smartphones have side effects--most of them undocumented.
Is there a passive defense against this? I'm very curious: this would seem to be a fairly serious threat for a military plane in combat, how do they deal with it? Is there a film that could be retrofitted to canopy windows on commercial craft?
Um, yeah about that, I'm an ATPL pilot and I've been distracted by lasers on finals plenty of times. By the times it hits us, it's this big very bright glowing dot and it obscures our view. It usually flickers back and forward too and it's incredibly distracting, the last thing anyone needs is a distraction during finals.
Wouldn't it make sense to coat the cockpit windows with laser light attenuating filter material?
Are these incidents only self-reported? How would a pilot tell a short visual hallucination from a laser pointer "strike"?
"The "rest of you" don't have the same situation we do. If you're in Europe, you live in small, homogeneous countries, so you don't have all the race and poverty problems we do."
- If you consider the EU compared to the USA, we have a bigger population than you
- we have 25+ nationalities with their own languages and cultures to start with
Even on an individual level, I wouldn't describe Europe as being "small homogeneous countries". May I ask how much European travelling you've done, out of interest?
- my brother taught in a school in London, there were 30 different mother tongues spoken by kids in this school of approx 300 children.
- "small" : well the UK has a population of 60m, France has a population of 65m. Small compared to the whole of the USA but equal to the combined population of several USA states each.
- "small" does not necessarily mean no poverty. I'd guess that your most populous states are not necessarily the wealthiest and the smallest are not necessarily the poorest. Check the level of income of Albania (3m) while you're at it.
- Alas homogeneous as well does not mean free of racism. I think there's quite a lot of evidence to suggest there is a lot of racism in strongly monocultural societies.
- "the rest of you" suggests you feel you are the exception to the rule, that the majority of the world has a different situation and that you need exceptional gun laws to survive. Would you think this is so?
I think you can reduce the number of guns and violence in your society and I wish you luck in doing so. It will be a long path though as your country is so awash with them and exports them freely to neighbouring countries as well. It appears that many Americans don't feel they can go to sleep safely unless they have a loaded gun in the house. I think few Europeans would say they'd sleep a lot better if they had a loaded gun in the house.
Good luck there, be safe. Feel free to visit any time.
Ok, so you are telling us what our social problems are having never visited here. Hmm, sets you at a little bit of a disadvantage there in claiming to know our society....
I suppose this is valid if you can tell us how you've "heard" about the reason for social problems here. Bit of 'citation needed' issue I think.
"Why Europe ever let middle-eastern Muslims come in, I have no idea. It should have been obvious that they would never assimilate, and that is exactly what causes racial conflicts."
Because most of us get along just fine? Why is it 'obvious' that people will never assimilate, when so clearly lots of people do? You really have little experience of walking around European towns do you? Yes, this is personal, my best mate is of Middle Eastern heritage, went to school with him since I was ten, played in the same chess club, differed over football teams (how can anybody support QPR and hold their head high? I'll give you that point ;-) ) been to too many parties together, he met a Norwegian girl, moved there for a while, they've got a beautiful little daughter, we still all hang out 30 years later and the kids all play on the beach in the town we grew up while us oldies chat about the crazy time when me Karim and Andy drove round France and Belgium in Karim's knackered old mini with all our stuff and 2 guitars...
Mate... you've never even been to Europe and you claim to know better than us? Hmmm.... I think you should come and visit some time...
I admit my experience of the USA has been limited, but at least I've seen a few cities, hung out in inner city Detroit with mates there, Spanish part of Manhattan with a mate there, drove from coast to coast and stayed in some small places on the way, been to Texas, seen a few places and talked to a few people...
I've seen green lasers coming out of a military base (local city base not some Area 51 shit). Looked like they were aiming at all kinds of objects. Couldn't tell if they pointed at any planes (couldn't see any), but I wouldn't be surprised.
Can anyone tell me if the (US) military has standard equipment that may be causing this? Or was this just multiple private bought lasers used by off duty soldiers?
Aiming a laser steadily at a target. Gosh darn nabbit, that must be so darn hard. Else the military would be using it all the time to light up targets... oh wait
THEY ARE!
Laser target designation, it has been all the rage since the first gulf war. It really ain't that complicated. You get device with some optics attached and you AIM them. Like say similar to how you aim a gun. You are aware that ordinary rifles pose a threath to aircraft in their range because a reasonably skilled marksman can hit a COMBAT plane? And airliners are big fat slow moving objects going in a straight line. Oh you don't have to correct for the trajectory of a bullet with a laser.
Read up on how the Red Baron was killed.
Are the wussies of slashdot that badly cordinated they can't train a pair of goggles on an aircraft? It really ain't all the difficult. Any cameraman can do it with far heavier equipment.
MMO Quests are like orgasms:
You may solo them, I prefer them in a group.
Yes, and auto-pilot can fly an aircraft better for 99% of the time. Pity that 1% is the take off and landing where the risk is the biggest. Back to the drawing board.
Remember that pilot who succesfully landed his airliner on water? Auto-pilot or pilot skill? And how do you think that pilot got skilled? By turning on the auto-pilot?
MMO Quests are like orgasms:
You may solo them, I prefer them in a group.
"resulted in a ban on all laser pointers in the state of New South Wales."
Sigh ... can we please ban 'knee-jerk banning' based on statistically highly unlikely incidents that don't even actually cause safety problems because 'this is why we have co-pilots' (an incident that was probably already illegal in this case)?
Why don't we just ban EVERYTHING, in advance, just in case anyone uses it in a bad way? Woman throws an ashtray at husband's head? Ban ashtrays! Man throws coffee mug back? Ban mugs! A child trips over a LAN cable? Ban LAN cables!
But why wait? Let's introduce a new bill called the "Ban Everything Bill".
I still challenge that lost eyesight is the least of a pilot's worries, but this is the argument that is put forward. The pussies comment was a generalization based upon my opinion of a particular event in the news, because a flight crew came across as especially whiny and were threatening to sue the whole world because of this.
How do you think we read the instruments- by Braille? Instrument lighting has a rheostat so you can turn it down at night. I keep them dim so that it's easier to spot traffic- one bright light in the cockpit will drown out faint lights outside.
How about this: I'll put you on a dark road and break your headlamps: Now you only have your parking lights to see the road markings by; enough under normal circumstances if there are no other lights out there.
Now I'm going to shine a laser in your eyes. Don't worry, it's only a Class II, so it won't actually burn your retina, just overload your rods. Now you can't see. Please drive at 75mph. Don't want to? Oops, I put some epoxy under the accelerator pedal. ("This is glue. Strong stuff.")
This is what it's like when you get hit. You can't really see and you can't stop or slow down. You revert to basics and stare at the attitude indicator while blinking like mad, trying to see through the spots and ignore 'the leans'.
Before you opine about the tendencies of professional pilots, try flying five days (nights) a week for a few years. Oh, my credentials: Airline Transport Pilot and Multi-engine Instructor certificates, Beech 1900 type rating, 135 Check Airman, 4500+ hours total time, 1500+ night, 700+ instrument.
No, they don't. There has not been a single case of a pilot blinded by lasers, nor is it likely there ever will be.
Strawman argument. The issue is not permanent blindness, but disorientation, temporary blindness, or injury. There are multiple reports of pilots being injured by lasers:
Burned retina: http://www.washingtontimes.com/news/2004/sep/28/20040928-111356-3924r/
Ruptured blood vessels: http://www.marconews.com/news/2011/jan/03/collier-sheriff-helicopter-pilots-injured-laser/?partner=yahoo_feeds
Unspecified possible injury: http://www.flightglobal.com/articles/2008/11/25/319357/pilot-injured-in-american-md-82-laser-incident.html
You might not be impressed because there's no blood, but an eye injury can be a career-ender for a pilot. Disorientation is the most common result of lasing incidents, with some cases of temporary blindness. Reduced vision, even temporarily, is a Big Deal when flying.
Sadly the only people you can recruit as pilots are humans. And humans have this impractical optical sensor called "eye" that simply is not made for quick changes of dark and light.
captcha: chipmunk
It may not blind someone but have you ever had a laser pointed at your face? It makes you want to duck and close eyes and look away. If you were a pilot and a laser was pointed at you, I be your reaction would be the same. I'd think to myself "someone is pointing a gun in my face and I'm about to be shot." or at a minimum "a laser will blind me (even though it probably won't do shit) so I better duck and cover"
Mark
What's to stop someone with say, a 120mW infra-red laser and a night-vision monocular from blinding pilots permanently, and essentially invisibly?
Curious as I own both of these items...
A 100mw "Laser Pointer" for what, burning holes in the heads of you audence who may have dosed off?
4mm to 8mm divergence at 3 miles, how much did you spend for the collimator?
How a device like this works its way into the public sector labeled at a "Laser Pointer" is beyond me.
I looked around and 100mw green lasers do seem easy to aquire, which is surprising as it was my understanding that publicly accessible "Laser Pointers" had a emission cap of 5mw which is plenty for "pointing".
There are a ton of regulations that have to be followed when putting on a laser show utilizing such power levels.
Gotta disagree with the example though. You must have had some bad experience with focusable lasers or a laser that was poorly manufactured. Green laser >20mw are fairly easy to make out on a while reflective surface flying through the night, and they at most cover the section of the tail. You can even see the dispersion of the laser beam as it travels if the laser is powerful and the night is really dark.
Sun usually only reflects from buildings during the day. At night, the pilot's pupils are dilated more, so their eyes are a lot more sensitive. And yes, lightning does blind pilots from time to time. When flying in the vicinity of thunderstorms at night, we usually turn the cockpit lights up to the maximum to decrease our sensitivity as much as possible. Pilots have had permanent eye damage from lightning strikes at night. And bird strikes on the windshield? Yep, they can be very startling too. At 250 knots, they sometimes even crack the outer windshield layer. Any other questions?
The incidents are real, all over the world, many airports have NOTAMs on it (Notice To Airmen), and in my company alone we receive several Air Safety Reports (reports from pilots) per month on this issue. Recently, one pilot even had to take medical leave for a week because of a black spot in his eyesight that would not go away. Others have been blinded for 10 seconds or so. Good thing there are two pilots on board...
In short, none of these have been verified, and there's a quite high possibility that the pilots are either lying, having harmed themselves, or were suffering from psychosomatic injuries.
Let's look at the first example. The pilot was 5 miles away from the airport when "struck". As you know, during approach, you can't really see much of the ground closer to you than the airport, but OK let's be generous and say 2 miles minimum distance to any visible ground object.
This 200 mW green laser (which almost certainly was far more powerful than what the kid had, but let's be generous again) has a no-harm distance of 100 m. The minimum distance the pilot was away was THIRTY-TWO times that. The power diminishes by a factor of a square of the distance, so at that range, it's less than a thousandth of the strength needed to cause damage.
Never mind the utter infeasibility of being able to keep the laser on the cockpit glass for more than a fraction of a second, and the dampening effect of the cockpit glass itself.
Again, there are alternative explanations (see my first sentence) which I find far more plausible.
Sure, you can get startled by the eerie light from a laser, but if they really were that damaging at that distance, every soldier would have been outfitted with a laser pointer a long time ago.
Perhaps people who can't deal with momentary distractions shouldn't be pilots? Gods know what they'd do if they ever saw sun reflected from a building, or hit a bird, or saw lightning.
Of course pilots should be able to deal with momentary distractions. Does this mean we need to add more momentary distractions? Especially when they may be landing?
Apparently at long ranges, the laser beam is quite wide. Also, the laser beam scatters when it hits the cockpit window. So the probability of the laser hitting the cockpit is a lot higher than you think. Also, it only takes a split second of light to distract the pilot. I can easily imagine a pilot getting significantly distracted from a laser. When a plane is landing, the last thing I want is a distracted pilot. Maybe planes and helicopter should have special coatings that will reflect or absorb the green laser light. Catching the people doing this will be very difficult.
Reports of popcorn filled houses across the world.
Most laser pointers are polarized. Why isn't the glass in airfraft fitted with a polarizing filter.
The odds of someone's handheld laser (which is subjet to random orientation) being able to replicate the exact polarization of a windshield is very very small.
...we can't have nice things.
Just arm the airplanes with those smart bomb things. That'll take care of the little bastards.
(captcha: snuffs)
The company I work for makes coated lenses for military aircrews with a notch filter that blocks targeting laser light wavelengths and have done so for years. I've known pilots that can tell you about the guys that don't wear them and lose eyesight. Maybe these pilots need similarly coated lenses.
Yes, well, we'll just make sure everyone who's going to break the law by pointing lasers at a plane will follow the rule that they do it from a safe distance. Frankly, I find your first sentence ignorant, insulting, and ludicrous Why would someone lie and risk losing their medical certification, ending their flying career?
Question about the 'safe distance'- is that oblique exposure or direct, focused exposure? Do they test on a real human eye? What was the ambient lighting conditions? Does Wicked Lasers have a vested interest in selling their product as safe? In short, I doubt the testing replicated or was designed to mimic the conditions experienced by pilots.The natural reaction when flying (and I speak from experience) is to look at an unexpected flash of light- it might be a strobe from another aircraft. If you're looking directly at the point from which the laser originated and a second beam hits you, your eye will be focusing that light on one point in your retina rather than being exposed through peripheral vision.
You use a convenient example of a distant exposure with plenty of distance for the beam to scatter and be attenuated. Note that the helicopter pilots in Naples were hit at low altitude (500 ft or less) and they were taken off flight duty. If you're not a pilot, you may not be aware of the nature of the FAA. There is no right to a pilot's license- the FAA is authorized by an act of Congress and all certifcates are considered privileges, not something you have a right to. The FAA can revoke your pilot or medical certification at will and there is very little recourse. On the medical side, the FAA can demand exhaustive medical testing prior to approving a medical certificate, and often those will be subject to limitations that effectively end a pilot's career.
All that being said, I agree that the primary danger is not permanent injury or disability but temporary blindness or disorientation. However, I speak from the perspective of someone who flies for a living. Electricians like to lock out power panels prior to working on wiring so that an accidental flip of a switch won't electrocute them; professional pilots also don't like to gamble with their livelihoods.
Whenever you ban something, only the COPS own them. Criminals that own banned utilies are hindered by Corpus Delecti, not opinions on what property can be owned. Bans only work on regions where the people are either sitting on land they don't own or are in a regulated conduct to another's privilege. Freedom? Liberty? Says who by what threat of violence?
The only reason laws change is because lawyers invent an artificial world animated by adminstrative trustee "Judges" (not judges, but Judges) where money is blood and every object in sight is addressable as an entity just because it is represented by atomic matter in the real world.
Blow it our your ass, because where Dundee was murdered by you felons, Duke Nukem will prevail.
"it would have far less of an impact than a quick glance at the sun, something people frequently do."
At night??
That's actually a very clever insight. I can't think of a single benefit of having the cockpit on top...
Perhaps you should have the experience of being lased at night while flying. The effect is not momentary. Reflected sunlight is not coherent and happens in bright ambient lighting conditions, when your iris is already contracted, so the overall effect is vastly mitigated. Most laser illuminations happen at night, when the eye is wide open, and the desensitization of the eye happens before either the blink or iris reflex can limit exposure.
Lightning can do the same thing- it will completely overload your retina and makes seeing anything hard until your eye re-adapts.
Compared to that, most bird strikes are non-events- you only find out when you find a dent or find a few feathers stuck in a seam.
There is no way your laser pointer spot is 4-8mm wide at a range of three miles.
\frac{\lambda z}{d}
Plug in the numbers, it's several meters in diameter and probably closer to around 10 m since it isn't diffraction limited.
There must already BE a solution to this from the DoD, or we'd have simply equipped all of our infantry with green laser pointers to make any enemy ground-attack by aircraft impossible, especially considering that a ground-attack track would be directly at the user, making the targeting of the pilot's eye that much simpler.
Seeing that we haven't done so suggests that there's some sort of glass coating or visor coating that pretty much prevents it.
-Styopa
I don't think it would be an exaggeration to say that it could be a "career-ender" for everyone on the plane.
at 532 and 650 nm installed on sunglasses for one of the pilots. Problem solved.
Obviously this behaviour is unsafe, and not to be condoned; but we must remember that many people have suffered years of noise nuisance from overflights. Indeed in some areas constant overflight by police helicopters is a deliberate method of harrassment used against suspects.
If an amateur astronomer can get a clear photograph of the space station, an object with an angular diameter of about 50 arc seconds which traverses several hundred arc seconds per second, I think someone in direct line with a helicopter or aircraft on approach to an airport would have little trouble, especially since beam spread on cheap laser pointers is pretty terrible and since windows are thick (as you mentioned) even a tight beam would create a largish bright spot in front of the pilot.
http://apod.nasa.gov/apod/ap090116.html
http://www.liquida.com/blog-news/15450896/solar-eclipse-oman-thierry-legault/
We can't count in physics or geometry or thick (though transparent) windows to protect pilots from stupid people with laser pointers and I don't think we can retroactively remove all of these cheap devices from stupid people. There are, however some possible solutions:
- laser profiling: Spectrum, beam stability, polarization and other characteristics of lasers can be characterized and traced to device.
- laser id, registry and profiling: All new pointer lasers would emit pulses representing its ID pattern every 100ms. When a person buys a laser, their identity is entered into a database along with the laser's pattern code.
- Dichroic filters on pilots glasses (this is a cheap, easy and highly effective solution which could be available right now)
- Dichroic filters on aircraft windshield (expensive but it would work)
- Darwin's laser (Lower the cost of high powered excimer lasers, give away burning infrared CO2 lasers at monster truck events and wrestling matches. Let Darwin do the rest)
- Please do not look into laser with remaining eye.
"Those risks increase with night vision goggles, which the deputies were wearing Saturday."
What?! Collier county sheriffs should turn down the brightness of their night vision goggles. They're supposed to magnify dim starlight and moonlight into the visible range, they aren't supposed to be able to amplify a laser into something brighter than a laser!
I mean don't they all wear them all the time?