I just read a report on the laser-based 747. As long as they don't waste money trying to reinvigorate SDI, I'm good.
On Tue, Sep 7, 2010 at 9:40 AM, Mr. Worf <[email protected]> wrote: > > > Yea, they have been using lasers to mark targets since the 70s. They are > developing 747s now that have lasers. > > On Tue, Sep 7, 2010 at 3:33 AM, Martin Baxter <[email protected]>wrote: > >> >> >> I was about to blast this article for the ludicrous notion that lasers >> could knock anything at distance out of the sky (the power and focusing >> issues alone will preclude that for years to come), but the jamming factor >> does seem plausible. >> >> >> On Mon, Sep 6, 2010 at 6:09 PM, Mr. Worf <[email protected]> wrote: >> >>> >>> >>> UM develops lasers to defend helicopters against missile attacks >>> >>> By Ben Coxworth <http://www.gizmag.com/author/ben-coxworth/> >>> >>> *11:36 September 4, 2010* >>> >>> [image: New laser technology could be used to protect military >>> helicopters from heat-seeking >>> missi...]<http://www.gizmag.com/lasers-protect-helicopters-from-missiles/16251/picture/120131/> >>> >>> New laser technology could be used to protect military helicopters from >>> heat-seeking missiles >>> Laser Marking >>> Machines<http://googleads.g.doubleclick.net/aclk?sa=l&ai=BD41bWWWFTLeGO5GqjQS8mdyuBd2thqkBwe-cvBTAjbcBsIPKARABGAEgs9z6ASgEOABQ8u6WqPv_____AWDJxs2GyKOgGbIBDnd3dy5naXptYWcuY29tugEKMzAweDI1MF9qc8gBAdoBmQFodHRwOi8vd3d3Lmdpem1hZy5jb20vbGFzZXJzLXByb3RlY3QtaGVsaWNvcHRlcnMtZnJvbS1taXNzaWxlcy8xNjI1MS8_dXRtX3NvdXJjZT1HaXptYWcrU3Vic2NyaWJlcnMmdXRtX2NhbXBhaWduPTdiYzhmNjJhOWYtVUEtMjIzNTM2MC00JnV0bV9tZWRpdW09ZW1haWyoAwHoA50F6AOAKOgD6AX1AwIAAEQ&num=1&sig=AGiWqtxrPD5FxU8wndmIlPWJabPMcSvaqQ&client=ca-pub-1607124478120364&adurl=http://www.laserstar.net/3500_series.html> >>> - 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The lasers >>> wouldn’t shoot down the missiles, but would instead jam their sensors, >>> essentially blinding them. This isn’t the first time that laser >>> systems<http://www.gizmag.com/go/7461/> have >>> been used for this purpose, but the creators of *this* system claim that >>> it is better suited to helicopters than anything that has come before. >>> >>> The UM <http://www.umich.edu/> system detects incoming missiles, then >>> shoots at them with a mid-infrared supercontinuum laser. While most lasers >>> emit light of just one wavelength, supercontinuums pack a broad range of >>> wavelengths into their focused beam. Although such lasers typically emit a >>> beam of visible light, due to the fact that this is a mid-infrared >>> supercontinuum, its beam isn’t seen but is felt as heat. The resulting broad >>> spectrum infrared beam mimics the electromagnetic signature of a helicopter >>> engine, and causes the missile to lose track of where the actual helicopter >>> is. It is said to be effective up to a distance of 2.9 km (1.8 miles). >>> >>> One of the big strengths of this system, according to its makers, is its >>> simple design and off-the-shelf fiber optic parts. “The laser-based infrared >>> countermeasures in use now for some aircraft have 84 pieces of moving >>> optics. They couldn't withstand the shake, rattle and roll of helicopters,” >>> said Mohammed Islam, a professor in the Department of Electrical Engineering >>> and Computer Science. “We've used good, old-fashioned stuff from your >>> telephone network to build a laser that has no moving parts.” >>> >>> Islam’s claims may soon be put to the test – his UM spin-off company, Omni >>> Sciences <http://www.omnisciinc.com/index.htm>, has recently received >>> US$1 million in grants from the US Army and the Defense Advanced Research >>> Projects Agency (DARPA <http://www.gizmag.com/tag/darpa>) to build a >>> second-generation prototype. >>> >>> >> >> >> -- >> "If all the world's a stage and we are merely players, who the bloody hell >> wrote the script?" -- Charles E Grant >> >> http://www.youtube.com/watch?v=fQUxw9aUVik >> >> >> > > -- "If all the world's a stage and we are merely players, who the bloody hell wrote the script?" -- Charles E Grant http://www.youtube.com/watch?v=fQUxw9aUVik
