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Don S
Posts: 425
Joined: Sun Apr 16, 2006 9:27 pm

nklr bird strikes

Post by Don S » Thu Nov 02, 2006 4:16 pm

Did you hear about an outfit in the States who wanted a means of testing bird strikes on new windshields for aircraft? A company in Canada responded and sent them a pneumatic gun that fired whole chickens and very high velocities. The outfit in the States bought the device and regardless of how thick and durable they made the windshields, the chicken went right through every time. They thought that maybe the gun was not working properly and requested a representative from Canada to come down to look it over. Upon arrival and viewing their first test firing and observing the chicken shatter the test window, the Canadian representative advised them he knew what the problem was. When they asked, he advised them to thaw the chickens first. Don S. from Chilly Chicken - (you guessed it), Saskatchewan fasteddiecopeman wrote: Rev, FWIW: when I was still flying B727s, I read a report of one that hit a duck or goose at somewhere around 400 knots. It took out the radome, penetrated the pressure bulkhead, came thru' the engine instruments and part of the co-pilot's flight instruments, hit and injured the flight engineer, THEN penetrated the cockpit door and came to rest 10 or so rows back! ...And a USAF C-130 hit a California Condor at 180 knots IAS (near Nellis AFB) some years ago. It penetrated the window in front of the co-pilot's seat as well as taking out the frame between it and the center window. It severely injured the aircraft commander in the right seat, and the navigator, and I believe it killed the flight engineer who would sit pretty much mid-ship. A bird-strike can ruin your WHOLE day!!! Ed --------------------------------- Get your email and see which of your friends are online - Right on the new Yahoo.com [Non-text portions of this message have been removed]

Chris Norloff
Posts: 294
Joined: Thu Jan 13, 2005 10:10 am

nklr bird strikes

Post by Chris Norloff » Fri Nov 03, 2006 8:04 am

Didn't the MythBusters TV show try that? And it turned out it didn't really matter whether the chicken was frozen or not - it's still several pounds of mass impacting a windshield at high speeds. thanks, Chris ---------- Original Message ---------------------------------- From: Don S Date: Thu, 2 Nov 2006 14:11:26 -0800 (PST)
>Did you hear about an outfit in the States who wanted a means of testing bird strikes on new windshields for aircraft? A company in Canada responded and sent them a pneumatic gun that fired whole chickens and very high velocities. The outfit in the States bought the device and regardless of how thick and durable they made the windshields, the chicken went right through every time. They thought that maybe the gun was not working properly and requested a representative from Canada to come down to look it over. Upon arrival and viewing their first test firing and observing the chicken shatter the test window, the Canadian representative advised them he knew what the problem was. When they asked, he advised them to thaw the chickens first. > > Don S. from Chilly Chicken - (you guessed it), Saskatchewan > >fasteddiecopeman wrote: > Rev, >FWIW: when I was still flying B727s, I read a report of one that hit a duck or goose at >somewhere around 400 knots. It took out the radome, penetrated the pressure bulkhead, >came thru' the engine instruments and part of the co-pilot's flight instruments, hit and >injured the flight engineer, THEN penetrated the cockpit door and came to rest 10 or so >rows back! >...And a USAF C-130 hit a California Condor at 180 knots IAS (near Nellis AFB) some years >ago. It penetrated the window in front of the co-pilot's seat as well as taking out the frame >between it and the center window. It severely injured the aircraft commander in the right >seat, and the navigator, and I believe it killed the flight engineer who would sit pretty >much mid-ship. >A bird-strike can ruin your WHOLE day!!! >Ed > > > > > > > >--------------------------------- >Get your email and see which of your friends are online - Right on the new Yahoo.com > >[Non-text portions of this message have been removed] > > > >Archive Quicksearch at: http://www.angelfire.com/ut/moab/klr650_data_search.html >List sponsored by Dual Sport News at: www.dualsportnews.com >List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html >Member Map at: http://www.frappr.com/dsnklr650 >Yahoo! Groups Links > > > > >

Doug Herr
Posts: 727
Joined: Tue Apr 15, 2003 8:02 pm

nklr bird strikes

Post by Doug Herr » Fri Nov 03, 2006 10:31 am

On Fri, 3 Nov 2006, Chris Norloff wrote:
> Didn't the MythBusters TV show try that? And it turned out it didn't really matter whether the chicken was frozen or not - it's still several pounds of mass impacting a windshield at high speeds.
I think they found that if the windshield is not rated for bird strike then a thawed chicken will still punch thru. They had some trouble finding a properly rated shield tho. I am pretty sure that the aviation industry has done plenty of proper tests. -- Doug Herr doug@...

Jim Priest
Posts: 317
Joined: Fri Apr 19, 2002 7:55 pm

nklr bird strikes

Post by Jim Priest » Fri Nov 03, 2006 10:50 am

On 11/3/06, Doug Herr wrote:
> strike then a thawed chicken will still punch thru. They had > some trouble finding a properly rated shield tho.
From wikipedia: http://en.wikipedia.org/wiki/Bird_strike#Urban_legend Revisiting the myth (Season 2, Episode 14), they built a wooden box to hold 12 layers of window glass, and through subsequent tests, found that a frozen chicken did penetrate through more panes of glass than a thawed chicken. Jim

Moose
Posts: 77
Joined: Mon Oct 16, 2006 12:49 pm

nklr bird strikes

Post by Moose » Fri Nov 03, 2006 11:58 am

You know you have WAY too much time on your hands when you're seeing how many layers of glass a chicken can penetrate. Jim Priest wrote: On 11/3/06, Doug Herr wrote:
> strike then a thawed chicken will still punch thru. They had > some trouble finding a properly rated shield tho.
From wikipedia: http://en.wikipedia.org/wiki/Bird_strike#Urban_legend Revisiting the myth (Season 2, Episode 14), they built a wooden box to hold 12 layers of window glass, and through subsequent tests, found that a frozen chicken did penetrate through more panes of glass than a thawed chicken. Jim --------------------------------- Cheap Talk? Check out Yahoo! Messenger's low PC-to-Phone call rates. [Non-text portions of this message have been removed]

J. Christopher Krok
Posts: 108
Joined: Wed May 03, 2006 4:52 am

nklr bird strikes

Post by J. Christopher Krok » Fri Nov 03, 2006 1:00 pm

> Posted by: "Chris Norloff" chris01@... chrisbviking > Date: Fri Nov 3, 2006 6:04 am (PST) > > Didn't the MythBusters TV show try that? And it turned out it didn't
really matter whether the chicken was frozen or not - it's still several pounds of mass impacting a windshield at high speeds. I've heard the frozen chicken story from other sources as well, but nothing concrete. However, I can attest from personal experience that a BB fired from a Daisy air rifle will break a beer bottle, but a lead pellet fired from same will not (at least, the one I had). There could be some difference in the velocity due to weight differences, but I figured it had to do with the deformation of the projectile absorbing some of the impact force. Seems that the same would certainly go for chickens. Consider it the "armor-piercing" vs. "hollowpoint" chicken. Krokko -- J. Christopher Krok, Ph.D. Big Cee Engineering KLR650 Accessories and home of the FAQ

Tengai Mark Van Horn
Posts: 1922
Joined: Tue Nov 19, 2002 8:31 pm

nklr bird strikes

Post by Tengai Mark Van Horn » Fri Nov 03, 2006 5:06 pm

At 10:53 AM -0800 11/3/06, J. Christopher Krok wrote:
>> Posted by: "Chris Norloff" chris01@... chrisbviking >> Date: Fri Nov 3, 2006 6:04 am (PST) >> >> Didn't the MythBusters TV show try that? And it turned out it didn't >really matter whether the chicken was frozen or not - it's still several >pounds of mass impacting a windshield at high speeds. > >I've heard the frozen chicken story from other sources as well, but >nothing concrete. However, I can attest from personal experience that a >BB fired from a Daisy air rifle will break a beer bottle, but a lead >pellet fired from same will not (at least, the one I had). There could be >some difference in the velocity due to weight differences, but I figured >it had to do with the deformation of the projectile absorbing some of the >impact force. Seems that the same would certainly go for chickens. >Consider it the "armor-piercing" vs. "hollowpoint" chicken.
F= mv/ t Mark

dooden
Posts: 3355
Joined: Sat Dec 15, 2001 3:37 pm

nklr bird strikes

Post by dooden » Fri Nov 03, 2006 6:13 pm

--- In DSN_KLR650@yahoogroups.com, Tengai Mark Van Horn wrote:
> > At 10:53 AM -0800 11/3/06, J. Christopher Krok wrote: > >> Posted by: "Chris Norloff" chris01@... chrisbviking > >> Date: Fri Nov 3, 2006 6:04 am (PST) > >> > >> Didn't the MythBusters TV show try that? And it turned out it didn't > >really matter whether the chicken was frozen or not - it's still
several
> >pounds of mass impacting a windshield at high speeds. > > > >I've heard the frozen chicken story from other sources as well, but > >nothing concrete. However, I can attest from personal experience
that a
> >BB fired from a Daisy air rifle will break a beer bottle, but a lead > >pellet fired from same will not (at least, the one I had). There
could be
> >some difference in the velocity due to weight differences, but I
figured
> >it had to do with the deformation of the projectile absorbing some
of the
> >impact force. Seems that the same would certainly go for chickens. > >Consider it the "armor-piercing" vs. "hollowpoint" chicken. > > F= mv/ t > > Mark >
Hell ya... watch out for them FMJ chickens.... ;-) Dooden A15 Green Ape

D Critchley
Posts: 467
Joined: Fri Oct 25, 2002 10:45 am

nklr bird strikes

Post by D Critchley » Fri Nov 03, 2006 6:19 pm

Folks, I know a bit about things ballistic, and one interesting fact that I managed to find years ago was that if you fire a 110 Gr. cast lead bullet from a .30-06 or equivalent at a muzzle velocity of 3200 ft per second, it will go through the web of a railway track at a range of around 20 ft. Normal ammunition will not do this simply because the velocity is not high enough. The BB story sounds right on the money. Military hollow charge ammunition comes under a whole different heading, for those who may be inclined to mention the M20 rocket launcher and the mighty 350 fs mv on it. DC Teenage Mark Van Horn wrote:
> At 10:53 AM -0800 11/3/06, J. Christopher Krok wrote: > >> Posted by: "Chris Norloff" chris01@... > chrisbviking > >> Date: Fri Nov 3, 2006 6:04 am (PST) > >> > >> Didn't the MythBusters TV show try that? And it turned out it didn't > >really matter whether the chicken was frozen or not - it's still several > >pounds of mass impacting a windshield at high speeds. > > > >I've heard the frozen chicken story from other sources as well, but > >nothing concrete. However, I can attest from personal experience that a > >BB fired from a Daisy air rifle will break a beer bottle, but a lead > >pellet fired from same will not (at least, the one I had). There could be > >some difference in the velocity due to weight differences, but > > >
[Non-text portions of this message have been removed]

usa1911a1
Posts: 193
Joined: Thu Jul 06, 2006 7:13 am

nklr bird strikes

Post by usa1911a1 » Fri Nov 03, 2006 6:38 pm

You are entering my world in ballistics as well. The normal cast lead bullet used in 30-06 caliber is 190 grains in weight with a diameter of .308 . There are no 110 grain lead bullets in that caliber to my knowledge. There is a 110 grain copper spitzer lead point hunting bullet which can reach 3200 FPS from a 30-06 is you use a good power like Dupont 4895 which is now out of manufacture. The lead 190 grain bullet is good up to about 1700 FPS or so. The problem as you push it faster is that it starts to melt and requires a copper base cap to prevent the powder from melting it from the rear. Leading also become a problem somewhere between 1800 and 2000 FPS. I understand that the military hyperfast antitank projectile which travels at something over 5000 FPS actually melts enroute forming a perfect raindrop shape in flight. This particular shape transmits the absolute most kinetic energy to the target and causes the inside of the tank to warp and fracture metal pieces which tend to ricochet around inside. Capt. Bob in Durham, CT. USA
----- Original Message ----- From: "D Critchley" To: DSN_KLR650@yahoogroups.com> Sent: Friday, November 03, 2006 7:18 PM Subject: Re: [DSN_KLR650] Re: NKLR Bird Strikes > Folks, > I know a bit about things ballistic, and one interesting fact that I > managed to find years ago was that if you fire a 110 Gr. cast lead > bullet from a .30-06 or equivalent at a muzzle velocity of 3200 ft per > second, it will go through the web of a railway track at a range of > around 20 ft. Normal ammunition will not do this simply because the > velocity is not high enough. The BB story sounds right on the money. > Military hollow charge ammunition comes under a whole different heading, > for those who may be inclined to mention the M20 rocket launcher and the > mighty 350 fs mv on it. > > DC > > Teenage Mark Van Horn wrote: > > > At 10:53 AM -0800 11/3/06, J. Christopher Krok wrote: > > >> Posted by: "Chris Norloff" chris01@... > > chrisbviking > > >> Date: Fri Nov 3, 2006 6:04 am (PST) > > >> > > >> Didn't the MythBusters TV show try that? And it turned out it didn't > > >really matter whether the chicken was frozen or not - it's still several > > >pounds of mass impacting a windshield at high speeds. > > > > > >I've heard the frozen chicken story from other sources as well, but > > >nothing concrete. However, I can attest from personal experience that a > > >BB fired from a Daisy air rifle will break a beer bottle, but a lead > > >pellet fired from same will not (at least, the one I had). There could be > > >some difference in the velocity due to weight differences, but > > > > > > > > > > [Non-text portions of this message have been removed] > > > > Archive Quicksearch at: http://www.angelfire.com/ut/moab/klr650_data_search.html > List sponsored by Dual Sport News at: www.dualsportnews.com > List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html > Member Map at: http://www.frappr.com/dsnklr650 > Yahoo! Groups Links > > > > >

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