Gå til innhold

Laser - Terrortrussel mot fly?


Jan Inge Ringvold

Anbefalte innlegg

Laser injures Delta pilot's eye

 

By Bill Gertz

 

THE WASHINGTON TIMES

 

A pilot flying a Delta Air Lines jet was injured by a laser that illuminated the cockpit of the aircraft as it approached Salt Lake City International Airport last week, U.S. officials said.

 

The plane's two pilots reported that the Boeing 737 had been five miles from the airport when they saw a laser beam inside the cockpit, said officials familiar with government reports of the Sept. 22 incident. The flight, which originated in Dallas, landed without further incident at about 9:30 p.m. local time.

 

A short while later, however, the first officer felt a stinging sensation in one eye. A doctor who examined the pilot determined that he had suffered a burned retina from exposure to a laser device, the officials said.

 

Transportation Security Administration (TSA) spokeswoman Yolanda Clark confirmed the incident, but declined to provide details.

 

"TSA is aware of the incident, and we are working with the airline in conducting an investigation to try and determine the cause of the incident," Miss Clark said.

 

She would not say whether TSA considers the incident a possible security threat to commercial aircraft. Other officials said the incident was serious enough that the pilot will be unable to fly for at least a week.

 

"So far, it doesn't sound like there will be permanent [eye] damage," one official said.

 

The identity of the pilot could not be learned, and Delta spokesman Anthony Black declined to comment.

 

Officials were unsure of the source of the laser and could not determine whether the exposure was deliberate or accidental.

 

John Mazor, a spokesman for the Air Line Pilots Association, said commercial pilots have been exposed to laser illumination.

 

"The Air Line Pilots Association has received reports in the past of incidents where lasers penetrated cockpits and, in at least one case, caused injury," Mr. Mazor said.

 

Several years ago, a pilot flying into a Western airport was hit by a light from a laser light show. The causes of the other incidents are not known, he said.

 

Asked whether a laser aimed at pilots could cause a plane to crash, Mr. Mazor said: "I think that's highly improbable. In every case in the past, the flights landed safely."

 

Military personnel also have suffered eye damage from laser illumination.

 

In one case, Naval Lt. Cmdr. Jack Daly and Canadian helicopter pilot Capt. Pat Barnes suffered eye injuries hours after an aerial surveillance mission to photograph a Russian merchant ship that had been shadowing the ballistic-missile submarine USS Ohio in Washington state's Strait of Juan de Fuca.

 

The Navy recently turned down an appeal from the Defense Department inspector general to award Cmdr. Daly a Purple Heart for the incident. Cmdr. Daly, who retired from the service last year, continues to suffer eye pain and deteriorating vision.

 

During congressional testimony in 1999, he warned of laser threats to pilots.

 

"Numerous documented cases regarding the use of lasers against aircraft, civilians and military personnel exist, as well as does an all-too-lengthy list of the injuries that have resulted from the accidental and intentional misuse of these devices," Cmdr. Daly told a House Armed Services subcommittee.

 

He noted that incidents of lasers being directed at commercial airliners during takeoff and landings have raised fears that "this in fact may be a new form of terrorism."

 

"Lasers are easily obtainable and can be self-manufactured weapons in the terrorist arsenal, which essentially can effect a soft-kill solution and leave virtually no detectable evidence," he said.

 

Så, er dette den nye greia for fremtiden for terrorister? Eller er det bare guttestreker? Høres ganske utrolig ut å kunne treffe igjennom vinduet i cockpit også? ""

Lenke til kommentar
Del på andre sider

Kanskje et lasersikte på ei rifle? Kombinert med kikkertsikte. Egentlig en skremmende tanke.

En liten laserpeker er vanskelig å holde så stødig på stor avstand.

 

Tror selv med lasersiktet på rifla det ikke er helt lett å få inn "en fulltreffer".

 

Her skal altså terroristen stå på x antall hundre meters avstand, sikte inn mot cockpit, for så å så finne et menneske som sitter der, deretter "tracke" vedkommendes øye, for så prøve å få inn en fulltreffer mot macula lutea (den gule flekken) på netthinnen, med en en størrelse på 1,5-2 mm.(tusendels meter).

 

Og dette hele tiden mens flymaskinen beveger seg i flere hundre km/t ift. terroristen.

Lenke til kommentar
Del på andre sider

Vel, maculan är ju där linsen fokuserar så för att träffa den så behöver du bara träffa ögat med ljuset, så sköter ögats lins resten...

 

Att blända någon med en laser är inte svårt. Det räcker med att se in i laser ljuset i det strålen passerar ögat för att förstöra mörker seendet.

 

En lasers fokus är mycket skarp, men den divergerar ändå något, vilket gör att träffpunkten blir större med avstånd. Intensiteten avtar förvisso.

 

Det går också fint att skapa en aldrig så liten spridning av en laser stråle på elektronisk väg. På så vis kan man få en laser att träffa ett stort område med hög intensitet då laserns träffpunkt rör sig med ljusets hastighet över målet.

 

Det är bara en fråga om att rikta lasern länge nog mot flyget så träffar den ganska snart ett öga...

Lenke til kommentar
Del på andre sider

Bli med i diskusjonen!

Du kan poste innlegg nå og registrere deg senere. Hvis du har en brukerkonto kan du logge inn nå for å poste med din egen konto.

Gjest
Skriv svar til emnet …

×   Du har limt inn tekst med formatering.   Fjern formatering

  Only 75 emoji are allowed.

×   Lenken din har blitt bygget inn på siden automatisk.   Vis som en ordinær lenke i stedet

×   Tidligere innhold har blitt gjenopprettet.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Opprett ny...