Wires - strikes, cutters and detectors
Join Date: May 2006
Location: Brisbane
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Wire Strike Fittings / explanation
You should find some interesting INFO about wire strike equipment here
http://www.crescentair.com/spares/wskits.htm
Interesting article
http://www.angelfire.com/ga3/galkie/wire.html
good animation / explanation
http://www.aero-access.com/images/aa...irestrike.html
NOTE: THIS IS NOT AN ADVERTISMENT FOR ANY COMPANIES THAT MAY BE SHOWN
http://www.crescentair.com/spares/wskits.htm
Interesting article
http://www.angelfire.com/ga3/galkie/wire.html
good animation / explanation
http://www.aero-access.com/images/aa...irestrike.html
NOTE: THIS IS NOT AN ADVERTISMENT FOR ANY COMPANIES THAT MAY BE SHOWN
Join Date: Mar 2003
Location: the hills of halton
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Bristol used to have a video that showed some testing ,
Has much happened with wire detection systems ? . some years ago there were several that were coming on the market
Has much happened with wire detection systems ? . some years ago there were several that were coming on the market
Join Date: Mar 2005
Location: UK
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Flying under wires
Is it just me that would be nervous about the wires in this landing? The camera may be misleading but it looks like he goes right under them just before touchdown!
http://www.youtube.com/watch?v=aJ9IRJ6epko
BW
http://www.youtube.com/watch?v=aJ9IRJ6epko
BW
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You can find information at this website:
http://www.atsb.gov.au/publications/...s_20050055.pdf
This from a WSPS manual:
The capability of the WSPSâ to protect against
damage due to a wire strike has been
demonstrated by Bristol Aerospace Limited
through extensive ground tests using a truck–
mounted helicopter fuselage and various wires
and cables, including a single span 10M (10,000
lbs. minimum breaking strength) cable and a
combination of a 10M and a polyethylene shielded
communications cable (100 pair, 24 gauge
insulated copper wire). These tests were
conducted at various speeds up to 60 miles per
hour.
The effectiveness of the WSPSâ to protect
helicopters against wire strike damage involving
wires and cables commonly used in the North
American rural environment was verified by the
U.S. Army through pendulum–swing tests
conducted at the NASA Impact Dynamic Test
Facility at Langley, Virginia. Tests against a
single span of an 11,000 lb. minimum breaking
strength steel cable were conducted using the
OH–58A, UH–1, OH–6A, AH–1S, UH–60, and
AH–64 helicopters. Swing tests against multiple
spans of electrical and communications cables
with combined strength in excess of 23,000 lbs
were conducted using the OH–58A helicopter.
These tests were conducted with the helicopter in
a horizontal position at time of cable impact. The
test results for the OH–58A are presented in U.S.
Army Applied technology laboratory report No.
USAAVRADCOM–TM–80–D–7, entitled
“Investigation of Helicopter Wire Strike Protection
Concepts”, dated June 1980.
The effectiveness of the WSPSâ to protect
helicopters against wire strikes involving wires
commonly used in the European rural
environment was verified by Aerospatiale
helicopter division through ground wire strike tests
conducted at the French Army CEV/Istres test
facility. A truck–mounted, WSPSâ equipped
Gazelle helicopter was driven into three spans of
Aster 147 electrical cables (.625” diameter, 19
strand aluminum electrical conductor) with
combined tensile strength of 32,100 lbs. The test
results are documented in Aerospatiale report
341A.06.2479.JdG, dated 1 October 1986.
Flight tests are conducted to determine the effect
on aircraft handling characteristics and radio
disturbances, etc., by various military and civilian
authorities on WSPSâ equipped helicopters for
the purpose of product certification. No in–flight
wire strike tests to verify the system capability
have been conducted.
http://www.atsb.gov.au/publications/...s_20050055.pdf
This from a WSPS manual:
The capability of the WSPSâ to protect against
damage due to a wire strike has been
demonstrated by Bristol Aerospace Limited
through extensive ground tests using a truck–
mounted helicopter fuselage and various wires
and cables, including a single span 10M (10,000
lbs. minimum breaking strength) cable and a
combination of a 10M and a polyethylene shielded
communications cable (100 pair, 24 gauge
insulated copper wire). These tests were
conducted at various speeds up to 60 miles per
hour.
The effectiveness of the WSPSâ to protect
helicopters against wire strike damage involving
wires and cables commonly used in the North
American rural environment was verified by the
U.S. Army through pendulum–swing tests
conducted at the NASA Impact Dynamic Test
Facility at Langley, Virginia. Tests against a
single span of an 11,000 lb. minimum breaking
strength steel cable were conducted using the
OH–58A, UH–1, OH–6A, AH–1S, UH–60, and
AH–64 helicopters. Swing tests against multiple
spans of electrical and communications cables
with combined strength in excess of 23,000 lbs
were conducted using the OH–58A helicopter.
These tests were conducted with the helicopter in
a horizontal position at time of cable impact. The
test results for the OH–58A are presented in U.S.
Army Applied technology laboratory report No.
USAAVRADCOM–TM–80–D–7, entitled
“Investigation of Helicopter Wire Strike Protection
Concepts”, dated June 1980.
The effectiveness of the WSPSâ to protect
helicopters against wire strikes involving wires
commonly used in the European rural
environment was verified by Aerospatiale
helicopter division through ground wire strike tests
conducted at the French Army CEV/Istres test
facility. A truck–mounted, WSPSâ equipped
Gazelle helicopter was driven into three spans of
Aster 147 electrical cables (.625” diameter, 19
strand aluminum electrical conductor) with
combined tensile strength of 32,100 lbs. The test
results are documented in Aerospatiale report
341A.06.2479.JdG, dated 1 October 1986.
Flight tests are conducted to determine the effect
on aircraft handling characteristics and radio
disturbances, etc., by various military and civilian
authorities on WSPSâ equipped helicopters for
the purpose of product certification. No in–flight
wire strike tests to verify the system capability
have been conducted.
Join Date: Jan 2005
Location: Australia
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Toolguy,another incident occured some 20 years ago by a Aussie UH IH. I heard it was seen by a Victorian farmer hitting & cutting 2 wires. This made the frame pitch up initially,& then down as each cutter did it's job.
The a/c landed & upon insp ,could only find a dent/ding on the underside of one blade.
The a/c landed & upon insp ,could only find a dent/ding on the underside of one blade.
Join Date: Jul 2006
Location: UK
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Laser Wire Detection System
Follow the link below to an article about Selex s LOAM laser based wire detection system
http://213.152.249.18/Rotorhub/Defau...e-f160de36f083
http://213.152.249.18/Rotorhub/Defau...e-f160de36f083
Join Date: May 2006
Location: Texas
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lightning arrestor cables
Originally Posted by blave
most of you have probably heard of this, but there's a system available (or at least under development?) that detects wires based on their emissions. Of course this means that the wires need to be live to be detected, but it might reduce the occurence of strikes.
I wonder if the system would fit in an S300C?
http://www.safeflight.com/products/powerline.html
Dave Blevins
I wonder if the system would fit in an S300C?
http://www.safeflight.com/products/powerline.html
Dave Blevins
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Helicopter hits Power Line
Attended a job with a power authority the other day whereas we filmed a set of 11,000 volt power lines that had to be re-erected after a R44 collected them. Seems several weeks ago, the R44 was flying low along the river and hit the lines only to fuse them together and they broke.
The R44 didn't crash, I don't know how, but kept going along it's merry way. The wires came down between two tents at a camp site luckily missing everyone. One of the unhappy campers rang CASA and informed them of the situation.
I bet the pilot went straight out and got a lottery ticket after emptying his pants.
The R44 didn't crash, I don't know how, but kept going along it's merry way. The wires came down between two tents at a camp site luckily missing everyone. One of the unhappy campers rang CASA and informed them of the situation.
I bet the pilot went straight out and got a lottery ticket after emptying his pants.
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We just had an Airbus A320 clip a whole set of 120K volt powerlines during approach to MMZC, one set of wires broke against the nose gear and engines and the other slid all the way back to the vertical stabilizer and snapped.
Now that is a new one.
Mexicana A319 hit power lines during approach
Air Transport Intelligence news
Rainer Uphoff
Tue, 10 Oct 06 08:24:16 GMT
Mexicana has admitted that one of its Airbus A319s was involved in a landing incident during which the twin-jet struck power lines on final approach to Zacatecas Airport in central Mexico.
The crew of the aircraft, a three-year old example bearing the registration N882MX, immediately aborted the approach.
A spokeswoman for the airline confirms the details of the 24 September incident and adds that the crew opted to proceed to Guadalajara, rather than attempt another landing at Zacatecas.
Guadalajara Airport, she says, was chosen "because of the better airport and maintenance infrastructure available". It is unclear whether the CFM International CFM56-powered jet suffered any damage.
Now that is a new one.
Mexicana A319 hit power lines during approach
Air Transport Intelligence news
Rainer Uphoff
Tue, 10 Oct 06 08:24:16 GMT
Mexicana has admitted that one of its Airbus A319s was involved in a landing incident during which the twin-jet struck power lines on final approach to Zacatecas Airport in central Mexico.
The crew of the aircraft, a three-year old example bearing the registration N882MX, immediately aborted the approach.
A spokeswoman for the airline confirms the details of the 24 September incident and adds that the crew opted to proceed to Guadalajara, rather than attempt another landing at Zacatecas.
Guadalajara Airport, she says, was chosen "because of the better airport and maintenance infrastructure available". It is unclear whether the CFM International CFM56-powered jet suffered any damage.
Join Date: Sep 2001
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G'day Maxeee,
There's a report of a R44 II hitting wires 41nm NW of Bowral and sustaining damage to both MR blades. That sound like the one?
Betcha the wires that the plane hit resurface with markers attached and I betcha the ones the Robbie hit don't!!! They even mark wires for cranes up here, but not helicopters, oh no........
Cheers,
MPT
There's a report of a R44 II hitting wires 41nm NW of Bowral and sustaining damage to both MR blades. That sound like the one?
Betcha the wires that the plane hit resurface with markers attached and I betcha the ones the Robbie hit don't!!! They even mark wires for cranes up here, but not helicopters, oh no........
Cheers,
MPT