aircraft tires are designed to carry heavy loads at high speeds in the
heavy loads at high speeds in the
heavy loads at high speeds in the smallest and lightest configurations
smallest and lightest configurations
smallest and lightest configurations practical but this means they’re
practical but this means they’re
practical but this means they’re subjected to enormous pressures and
subjected to enormous pressures and
subjected to enormous pressures and friction they’re highly engineered
friction they’re highly engineered
friction they’re highly engineered structures they carry weight similar to
structures they carry weight similar to
structures they carry weight similar to the tires on the largest earth movers
the tires on the largest earth movers
the tires on the largest earth movers but at the speed of a Formula One car
but at the speed of a Formula One car
but at the speed of a Formula One car pound for pound they endure the harshest
pound for pound they endure the harshest
pound for pound they endure the harshest service life of any tire made on takeoff
service life of any tire made on takeoff
service life of any tire made on takeoff the load on aircraft tires makes them
the load on aircraft tires makes them
the load on aircraft tires makes them heat up to temperatures of between 130
heat up to temperatures of between 130
heat up to temperatures of between 130 and 150 degrees centigrade
Dunlop aircraft tires in Birmingham has
Dunlop aircraft tires in Birmingham has been designing and making aircraft tires
been designing and making aircraft tires
been designing and making aircraft tires since 1910 they hand make tires for all
since 1910 they hand make tires for all
since 1910 they hand make tires for all types of aircraft from Jumbo’s to
types of aircraft from Jumbo’s to
types of aircraft from Jumbo’s to Harrier Jump Jet they carry out rigorous
Harrier Jump Jet they carry out rigorous
Harrier Jump Jet they carry out rigorous tests that push aircraft tires to more
tests that push aircraft tires to more
tests that push aircraft tires to more than four times their operational safety
than four times their operational safety
than four times their operational safety limits to ensure they can withstand all
limits to ensure they can withstand all
limits to ensure they can withstand all the stresses they might undergo they’re
the stresses they might undergo they’re
the stresses they might undergo they’re tested on a dynamometer that simulates
tested on a dynamometer that simulates
tested on a dynamometer that simulates taxiing takeoff and landing conditions
taxiing takeoff and landing conditions
taxiing takeoff and landing conditions but the most impressive test is when
but the most impressive test is when
but the most impressive test is when tires are overinflated in the first sale
tires are overinflated in the first sale
tires are overinflated in the first sale so Nate what’s the purpose of this test
so Nate what’s the purpose of this test
so Nate what’s the purpose of this test this is to check the strength of the
this is to check the strength of the
this is to check the strength of the casing this particular tire is off a
casing this particular tire is off a
casing this particular tire is off a Boeing 737 it’s a main oil tire and it’s
Boeing 737 it’s a main oil tire and it’s
Boeing 737 it’s a main oil tire and it’s rated to 220 psi right Wow so what we
rated to 220 psi right Wow so what we
rated to 220 psi right Wow so what we need to do we need to get to 880 psi and
need to do we need to get to 880 psi and
need to do we need to get to 880 psi and we’ll probably go beyond that we
we’ll probably go beyond that we
we’ll probably go beyond that we probably gets around about a thousand
probably gets around about a thousand
probably gets around about a thousand and I’ll see we’re putting air in here
and I’ll see we’re putting air in here
and I’ll see we’re putting air in here only no no we can’t use air we have to
only no no we can’t use air we have to
only no no we can’t use air we have to use water if we used air that the volume
use water if we used air that the volume
use water if we used air that the volume of air that would be generated in here
of air that would be generated in here
of air that would be generated in here would cause a tremendous bang will
would cause a tremendous bang will
would cause a tremendous bang will probably destroy most of the surrounding
probably destroy most of the surrounding
probably destroy most of the surrounding buildings the last time an aircraft tire
buildings the last time an aircraft tire
buildings the last time an aircraft tire was overinflated with gas here at Dunlop
was overinflated with gas here at Dunlop
was overinflated with gas here at Dunlop was in the 1960s and here’s what’s
was in the 1960s and here’s what’s
was in the 1960s and here’s what’s happened it’s never been done since
overinflating aircraft tires to more
overinflating aircraft tires to more than four times their normal pressure is
than four times their normal pressure is
than four times their normal pressure is an extremely dangerous business so
an extremely dangerous business so
an extremely dangerous business so Richard and Johnny have to retire to a
Richard and Johnny have to retire to a
Richard and Johnny have to retire to a safe distance and watch the action on a
safe distance and watch the action on a
safe distance and watch the action on a monitor it takes nearly 10 minutes to
monitor it takes nearly 10 minutes to
monitor it takes nearly 10 minutes to fill the tire to just its normal
fill the tire to just its normal
fill the tire to just its normal operating pressure of 220 psi
of course the anticipation is killing me
of course the anticipation is killing me exciting isn’t it yeah to overinflate
exciting isn’t it yeah to overinflate
exciting isn’t it yeah to overinflate the tire the water pressure is stepped
the tire the water pressure is stepped
the tire the water pressure is stepped up again and is pumped hydraulically
up again and is pumped hydraulically
up again and is pumped hydraulically into the casing I’m not missing this
into the casing I’m not missing this
into the casing I’m not missing this moment oh I’m glad yeah don’t look away
moment oh I’m glad yeah don’t look away
moment oh I’m glad yeah don’t look away because you know if you do this is this
because you know if you do this is this
because you know if you do this is this a once-in-a-lifetime opportunity see
a once-in-a-lifetime opportunity see
a once-in-a-lifetime opportunity see this the pressure is building
Nick how we doing on pressure where
Nick how we doing on pressure where we’ve reached the minimum that we
we’ve reached the minimum that we
we’ve reached the minimum that we required done 880 are where we have yet
required done 880 are where we have yet
required done 880 are where we have yet I think we’re probably about 900 where
I think we’re probably about 900 where
I think we’re probably about 900 where we’re coming up to 900 well Richard may
we’re coming up to 900 well Richard may
we’re coming up to 900 well Richard may have missed it but you won’t
we sure will we are we’re at 905 psi 905
we sure will we are we’re at 905 psi 905 doing cuz when I turn around to you Wow
doing cuz when I turn around to you Wow
doing cuz when I turn around to you Wow look at that
look at that
look at that destroyed yeah that’s a typical burst
destroyed yeah that’s a typical burst
destroyed yeah that’s a typical burst that happens on crossroads by reaching
that happens on crossroads by reaching
that happens on crossroads by reaching over four times its normal operating
over four times its normal operating
over four times its normal operating pressure before bursting and even then
pressure before bursting and even then
pressure before bursting and even then still retaining its basic form this type
still retaining its basic form this type
still retaining its basic form this type of aircraft tire has proved that it has
of aircraft tire has proved that it has
of aircraft tire has proved that it has the strength and integrity to cope with
the strength and integrity to cope with
the strength and integrity to cope with extreme situations very reassuring in
extreme situations very reassuring in
extreme situations very reassuring in the event of an emergency landing is
the event of an emergency landing is
the event of an emergency landing is there any way we can film on a custard
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