NASCAR Cup cars fire

Dr.. Diandra: A motorcycle racing suit – NASCAR Talk

Endurance rider Stephen Cox relates to Bone scary first person account (in two parts) His car caught fire at 125 mph. He was amazed at how the smoke made it almost impossible for him to see his belts or the window pane.

Fire is not unique to any racing series. When Ryan BlaneyA 2018 Coca-Cola 600 caught fire, and his crew chief asked if he had activated the fire suppression system.

“Dude, I was trying to get out of it. I didn’t look for the pin. I couldn’t see it regardless,” Blaney told him.

The Next Generation car had more than its share of fires in its inaugural season. Tyler Riddick It suffered its first next-generation fire at the March test in Kansas. During the season, fires affected Chris Bucher, Joey LoganoAnd the Cole CusterAnd the Chase BriscoAnd the JJ follows And the Kevin Harvick – All Ford drivers – and Alex Bowman.

After the Indianapolis race, NASCAR imposed a buffer shroud around the right exhaust pipes. Officials assumed that the connection moved the tubes, allowing them to set fire to the foam inside the door panel.

But the fires continued.

So did the driver’s frustration.

After a fire toppled the championship, rival Harvick Outside the DR DarlingtonNASCAR has released more technical changes. These modifications are based on a new theory that small pieces of rubber inside a car start fires.

What causes fire?

Knowing how a fire starts is the key to stopping it.

Fire is a chemical reaction between fuel and oxygen in the presence of heat. Engines use spark plugs to burn gasoline. Your body oxidizes glucose and fat in a similar reaction to keep your metabolism going.

Keeping a fire going requires the three components—fuel, oxygen, and heat—in sufficient quantities to sustain the chain reaction that keeps the fire going. Fires stop when one or more of the three components are reduced or eliminated.

Air is about 21% oxygen. Rolling a person over a fire on the ground or in a blanket that separates the fire from the oxygen. This is the same reason to put out a grease fire by flapping a lid on the pan. No oxygen, no fire.

It cools the water, thus eliminating the heat element. But water won’t put out a gasoline fire for the same reason it doesn’t work on grease fires. Liquids such as gasoline, paint thinner, etc. do not mix with water.

NASCAR uses chemical fire retardants In the vehicle and in containers carried by safety personnel. These chemicals eat up the oxygen. A thermally activated extinguisher is required in the fuel cell area, but the quenching system in the driver’s compartment is manually operated.

How does the fire suit work?

The zero judgment Motorsports safety is: hope for the best and plan for the worst. This does not mean just trying to avoid fires, but protecting people in the event of a fire.

There is no fireproof material. Drivers’ fire suits protect them by providing thermal insulation, being poor fuel sources and blocking oxygen.

Quilting traps air between the seams of a suit. Air is a great heat insulator, which reduces the amount of heat that can penetrate the suit.

Most fire suits are made of Nomex Or Nomex, although increasingly present More material options. Nomex may not have the super strength of its brother molecule kevlar, but Nomex doesn’t burn: it’s a letter. Carbonization forms a layer of carbon around the fibers, as shown in the drawings and photos below.

Carbon is a great heat insulator that provides extra heat protection. Since charcoal is not flammable, it does not provide fuel for a fire.

Finally, the expanding Nomex fibers close the openings in the weave of the fabric, as illustrated below. Prevents oxygen and flame from reaching the driver’s skin.

Graphic showing how Nomex expansion fibers close holes in the weave of a fire suit to prevent oxygen from passing through

All driver equipment must be fireproof, from headlocks to shoes and underwear. Even corrections must conform to the standards he set SF . Foundation. This gear gives the driver about an additional 10 seconds before suffering a second degree burn.

If you want to know more about motorcycle suits, check this out this video It was made with the National Science Foundation.

motorcycle suit for car

Any substance will burn or melt if given enough heat and oxygen. Carbon fibers are stable at very high temperatures, but the resins and adhesives that bind the carbon fiber composite together are flammable at low temperatures.

NBC sports analyst Steve Letarte breaks down the latest NASCAR-imposed changes in the video below. The first seals are places where rubber parts can get into the car. The second fix replaces part of the polymer right-hand door panel – the area closest to the exhaust pipes – with stainless steel.

Video from NBC Sport's Steve Letarte explaining the NASCAR fixes tasked with stopping the car fires

The only thing I will add to the video is that the small pieces of fuel catch fire more easily. You can put a propane torch in the frame and it will not burn. But the marbles – tiny bits of rubber and track granules – have a lot of space. This means lots of places to start burning. This could also be why the problem didn’t appear until actual races on tracks that collect a lot of rubber.

NASCAR suggested another optional fix: bulging paint. This paint is a great piece of materials science and is fun to say.

A puffy smell means expansion, often in the presence of heat. Looking for puffy paint Taken off after September 11 And the amazing way the steel in the World Trade Center melted. Puff paints are now in demand in many commercial buildings. It is also common in drag racing.

Puff paint works like Nomex. Heat causes the paint to swell, but to a much greater degree. The video below shows an example of a puffy coating used in construction.

Video showing puffy paint expanding

Also like Nomex, char cannot become a fuel. The example below uses a regular piece of cardboard with and without a protective coating.

Video showing how puffy paint prevents cardboard from burning

NASCAR identifies painted areas to where exhaust passes near the body panels and right-side foam. Teams also have the option to paint the door foam.

There is a lightweight penalty kick, but it’s not as big as the consequences of being knocked out of the knockout race due to a fire.


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