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A Bell 206 shows cutters above and

cockpit section of WSPS.

Wire strike protection systemm Wikipedia, the free encyclopedia

wire strike protection system(WSPS) (Developed for the

-58 / Bell 206 in 1979) is an entire system of components

gned to mitigate the risk of wire strikes while flying helicopters

ap-of-the-earth altitudes, as well as takeoffs and landings.

system is mounted around the front of many U.S Marine Corps,Navy, U.S Air Force, U.S Army,[1]and some civilian

copters. The larger CH-46 and CH-47 tandem rotor helicopters

e no WSPS systems installed.

WSPS system generally appears as two guidance swords at the

er and lower front of the cabin protruding forward 45 above

below the horizontal. In each of the inner corners to the cabin a

d, massive pair of scissors made of hardened steel is mounted, whose opening angle is so small, that

edy or forced incoming steel cable is cut through.

ese swords are often mistaken for radio antennas). The entire system may include upper and lower cu

mblies, a non-electrically conductive abrasive strip wire scoring device along the center of the divid

dscreen, and windshield wiper protector frames to keep wires from hanging up on wiper motor shaft

PS is designed to channel a wire or cable into the cable cutter, score and weaken it as it travels into t

er assembly, and "cut" a wire before it can entangle the rotor system or cause a crash. The U.S. Arm

ter at Fort Rucker, AL, claims that in a single wire strike, 90% survivability is achieved by using WS

more wires you encounter at a given time, the less likely WSPS will help you survive the encounter

me WSPS lower cutters have a break away tip in case of nose low ground impact.

eferences

1. Verification Tests of an AH-1S Wire Strike Protection System (WSPS) (http://www.dtic.mil/cgi-bin/GetTRDoc?

AD=ADA123188&Location=U2&doc=GetTRDoc.pdf)

2. WSPS system (http://www.helicopterpage.com/html/unique.html)

e alsoWire cutter (jeep)

xternal links

www.helicopterpage.com - WSPS system (How Helicopters Work)(http://www.helicopterpage.com/html/unique.html)Safety Study of Wire Strike Devices Installed on Civil and Military Helicopters

(http://www.tc.faa.gov/its/worldpac/techrpt/ar0825.pdf)

http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA123188&Location=U2&doc=GetTRDoc.pdfhttp://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA123188&Location=U2&doc=GetTRDoc.pdfhttp://www.tc.faa.gov/its/worldpac/techrpt/ar0825.pdfhttp://www.helicopterpage.com/html/unique.htmlhttp://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA123188&Location=U2&doc=GetTRDoc.pdfhttps://en.wikipedia.org/wiki/U.S_Navyhttps://en.wikipedia.org/wiki/U.S_Air_Forcehttp://www.tc.faa.gov/its/worldpac/techrpt/ar0825.pdfhttp://www.helicopterpage.com/html/unique.htmlhttps://en.wikipedia.org/wiki/Wire_cutter_(jeep)http://www.helicopterpage.com/html/unique.htmlhttp://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA123188&Location=U2&doc=GetTRDoc.pdfhttps://en.wikipedia.org/wiki/Wire_strike_protection_system#cite_note-1https://en.wikipedia.org/wiki/U.S_Armyhttps://en.wikipedia.org/wiki/U.S_Air_Forcehttps://en.wikipedia.org/wiki/U.S_Navyhttps://en.wikipedia.org/wiki/U.S_Marine_Corpshttps://en.wikipedia.org/wiki/Nap-of-the-earthhttps://en.wikipedia.org/wiki/Helicoptershttps://en.wikipedia.org/wiki/Bell_206https://en.wikipedia.org/wiki/File:Ntsp-oh58-N170FR-070205-01cr.jpg

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Wire Strike Accidents in General Aviation: Data Analysis 1994 to 2004(http://ihst.rotor.com/portals/54/industry_reports/wirestrikes_20050055.pdf) Page 33Wire Strike Protection System, MDHS 500 Maintenance Manual(http://www.rotorywing.com/downloads/index.php?file=2&sort=1)Magellan Aerospace Announces New Bell Helicopter Wire Strike Protection System Developmen(http://www.magellan.aero/media/press-releases/Recent/2011%20-%20March%208/Magellan%20Aerospace%20Announces%20New%20Bell%20Helicopter%20WStrike%20Protection%20System%20Development.pdf)

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egories: Aircraft components Aviation safety

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