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Tire
Explosion Aircraft Damage Here
is a photo of a recent over inflation accident. A Lear 60 main
wheel was over inflated and one wheel half pierced the exterior of
another jet's fuselage. The cost of this repair was many times the
cost of a proper tire cage. Luckily, no one was injured from this
accident. Click the photo for a larger version.
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Pass !
September 26, 2006 Current Model
Our
current model aviation tire cage successfully tested on September 26th, 2006. We took
our 2004 aviation tire cage and improved the design. An improved lock plate
design and redesigned hinge segments performed even better than
expected. There was minor damage to the interior of the cage where
the inner blast plates absorbed the majority of the blast. There
was a slight bending of the latch assembly hinge segment, however,
the door was still operable. This aviation tire cage is the only
reliably tested product on the market. We assemble every cage to
exacting standards to ensure a safe product.
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Fail
! Shop Made Tire Cage
A
customer donated their shop made tire cage for testing. The cage
was welded from 3/8 inch sheet metal. One side of the cage
traveled 50 yards and made a heavy gouge when it crashed into the angle
iron frame of a old diesel fuel tank. The other side of the cage
traveled over one hundred yards over a 15 foot high hill into a pasture.
The door of the cage traveled 150 yards from the cage. This
is a worse case scenario for shop built tire cage solutions. This
tire cage design had the potential to make an tire inflation error much
worse by adding more deadly shrapnel. Three pieces of 3/8 sheet metal,
weighing up to 100 pounds traveling at high force and speed would
at best cause serious hangar or aircraft damage. The worse case
would be serious injury to personnel or death.
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Fail
! Truck Tire Cage
A
customer donated their truck tire cage that they had modified with
additional steel plating. The 12 gauge steel plating was added for
extra "protection". The split rim wheel ripped through
both sides of the steel tubing. One wheel half traveled 50 yards
from the tire cage. All of the bolts on the wheel were lost.
Leaving the tire assembly with the velocity of a 45 handgun round, we
couldn't find them. The extra "protection" 12
gauge steel plates travel 100 yards from the tire cage. This
tire cage design had the potential to make an tire inflation error much
worse by adding more deadly shrapnel and not containing the wheel rim
and bolts. Although light weight, the sheet metal, traveling
at high force and speed would at best cause serious hangar or aircraft
damage. The worse case would be serious injury to personnel or
death.
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Pass !
Prototype Five 2004 Test
Our
2004
model aviation tire cage. This tire cage was tested with a Gulfstream 4 main landing gear wheel and tire. In
this test the outer flange of the wheel failed. The energy released during this
test is approximately 58 times more powerful that a .30-06 bullet at 100
yards. This tire cage is designed with our dual clam shell design and safety
straps that allow the cage to flex to absorb the blast forces.
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Fail
! Prototype Four
This
aviation tire cage was tested with
a Gulfstream 4 main landing gear wheel and tire. In this test the
outer flange of the wheel failed. The design incorporated a clam
shell type of design on one end of the cage. However misapplication
of the safety straps and the welded back wall of the tire cage resulted in
the blown off back wall severing the strap and landing 150 feet from the
test sight. We also discovered that the force of the wheel hitting
the back wall allowed a tire cage with wheels to travel an unsafe
distance.
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Fail
! Prototype Two
This
aviation tire cage was tested with
a Bac 111 main landing gear wheel and tire demonstrating what happens
when tie-bolts break. This tire cage was designed with the aid of an
engineering firm that supplied a massive amount of analysis predicting this
design would contain the blast. The 100 pound door of the tire cage
again becomes a projectile traveling over 100 feet from the trailer it
was mounted on. One of the steel balls from the latching mechanism
shot through the 2 x 6 decking on the trailer. It did not contain the failure.
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Fail
! Prototype One
This
aviation tire cage was tested with
a Gulfstream II main landing gear wheel and tire demonstrating what
happens when tie-bolts break. A 45 caliber hand gun projects it
round at approximately 900 feet per second. Exploding tie-bolts
travel at 1,100 feet per second. The tire cage was placed inside a
cinder block concrete enclosure. This tire cage design was modeled after
standard tire cage models when the project was started. The flaw
with this design is trying to contain the blast with a simple tire cage design is
not possible. The door just becomes another projectile. The
yellow blur at the end of the video is a towel that blew over the camera
at detonation.
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