What are we talking about today? Zero – Fire. Actually, this is to extinguish fires in zero gravity or microgravity environments! There is gravity on the earth. When a fire is in trouble, heat and smoke will run upwards, and fire extinguishing will also be used by it. But in a zero-gravity environment, it is completely different. The fire may burn into a strange shape. Zero-Gravity Fire Suppression, without direction, which brings new challenges to extinguishing fires.
1. Difficulties and characteristics of fire extinguishing
Zero – Fire is very different from ordinary fire extinguishing on Earth! When burning on the earth, the rise of hot air will form (convective airflow), which will help to ignite the smoke, making it easier to find the source of fire and the direction of combustion. But under zero gravity, combustion is a shape (spherical), and the combustion diffusion rules are very different. For example, if a fire catches a fire in the space (space station), the fire will not burn upwards, but will spread around it casually, and it may be on fire everywhere.
Because gas won't flow as as on Earth under zero gravity (gas won't flow as regularly as it is on Earth), fire extinguishing agents are also uneven. Fire extinguishing agents may not reach the place they want to go, and they cannot extinguish Mars.
2. Applicable places and scenarios
Space : Zero – Fire is crucial if a small range of devices in space (spacecraft) and (spacewalk). After all, if it burns too much, the entire capsule will be destroyed and the lives of astronauts will be in danger.
(Scientific Experiment) : When doing zero-g (zero gravity simulation cabin) experiments and studying combustion theory and new materials, there is inevitably a fire risk. Using this fire extinguishing method can ensure the orderly conduct of experiments and ensure the safety of personnel and equipment.
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3. Methods and means of extinguishing fires
(Chemical fire extinguishing agent) : There is a very special fire extinguishing material that can react quickly with flames and block combustion (chain reaction). After injection it can spread out under zero gravity and extinguish the fire. For example, Halon-based (Halon-based preparation), which has good effect, but is gradually eliminated because it is harmful to the ozone layer. Now we are also studying a lot of new – (new generation of chemicals), which are environmentally friendly and have good results.
of (isolated oxygen supply) : Close the ignition area and reduce air locks (air lock chamber) (oxygen concentration). In the international space (space station), each module has good sealing performance. Once a fire occurs, it can immediately block the corresponding module. The fire will be wiped out soon after without oxygen.
(Physical fire extinguishing equipment) : Like Fire made of (fire shield made of special materials), it can block heat (heat transfer); fans used for air, evacuating air and reducing combustion opportunities
4. Technical points and key points
the Flame : Designed in zero – a fire (flame detector) that can accurately and sensitively, whether it is (infrared sensor) or (ionization detector), it must be able to capture the fire moment in time. It is important to find timely initial discoveries in some space station fire experiments!
of (effective agent dispersed) : developed-based (pressure-based injector) to ensure that no matter what posture or gaseous condition, the fire extinguishing agent can be distributed well in the space, enclosing the fire source, and all eliminated.
Here are some questions you may have:
Q: What is the difference between the fire extinguishing agent used in Zero – Fire
Answer: It is quite different from the ones used on Earth. Fire extinguishing agent flows on the earth by gravity, but this must be convenient for even dispersing without gravity. It is best to have an environmentally friendly and low-corrosion fire extinguishing agent.
Q: If a very small flame is still needed, does Zero-Fire have an advanced fire extinguishing method?
Answer: Don’t be lucky if you lit a small flame! Under zero gravity, the law of combustion spread is elusive. No matter how small the spark is, it must be destroyed quickly. Don't let it become a big deal and save it.
Anyway, I think this Zero – Fire is too important. In the future, humans will go to space more often. When facing fire risks, they must rely on this fire extinguishing method to protect our astronauts and protect our precious space equipment. When will the real interstellar migration be in the future? Maybe this is the magic weapon for security protection!
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