Inside Of An Airplane - Flight attendants chat in the nearly empty cabin of a Delta Airlines flight, April 11, 2020, as travel is restricted due to the threat of the coronavirus, April 11, 2020. (REUTERS Photo)
Jet manufacturers and airlines have launched an urgent initiative to reassure worried travelers that the air they breathe is safe, as it is vital to the recovery of the travel industry hit by the coronavirus.
Inside Of An Airplane
Boeing appointed former engineering and development chief Mike Delaney to lead a broader effort to build confidence, and Airbus leaders say the industry is moving out of an initial crisis phase. to the restoration of public confidence. This led, among other things, to a concerted effort to explain how the cabin air filter works to dispel the myth that only static or recirculated air is present in a pressurized fuselage.
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Turkish Airlines CEO Bilal Ekshi also took to Twitter earlier in the week to allay fears and announce new security measures. Noting that no cabins, passengers without masks or queues will be allowed inside the aircraft, Ekshi assured that the filtration system used inside the cabins is hospital-grade and ensures effective sanitation.
Health officials are still investigating the various sources of transmission of the disease virus, COVID-19, but attention is focused on the risk of contracting it through airborne droplets from travelers who cough or sneeze, said even touching infected faces.
The air travel industry has historically talked about seat height rather than air quality. This has to change because of the pandemic.
"It's about explaining what we do for passenger safety: aircraft safety, but also sanitary safety," said Airbus chief engineering officer Jean-Brice Dumont.
Interior Of Large Commercial Airplane With Passengers On Their Seats During Flight. Stock Photo By ©kasto 212803268
The air in the office building is changed four times every hour. In a modern jet, it increases 20-30 times.
"An airplane's air system is as good as anything you're going to be exposed to," Delaney said. He added that air circulation is one of several ways to reduce the potential for the virus to spread on board, including thoroughly cleaning planes and screening passengers for symptoms.
In most cases, compressed air is supplied from a clean engine compartment - uncontaminated by excess fuel - to the air conditioning packages and from there to the ceiling fans in the cabin. Both aircraft manufacturers claim that the air in the cabin is directed downwards instead of longitudinally through the fuselage, which reduces the risk of infection. Half of it is recycled through the hospital's HEPA filter, which is designed to remove 99.97% of contaminants, including viruses. The other half is poured through the valves.
Pilots say that the air in the cabin is changed every two to three minutes, but scientists warn that the air is actually a constant mixture. But the faster the speed, the faster the old air will dissolve.
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"In terms of air exchange rates, the air in an airplane circulates a lot. From that perspective, airplane systems are very good," said Byron Jones, a professor at Kansas State University who helped propose the air patterns.
"The biggest challenge in an airplane is very high passenger density. A lot of people are crammed into a small space, and to maintain air quality, you need a lot of air in there to ventilate that space," Jones said.
According to the US Centers for Disease Control and Prevention, the virus can spread between people who are in close contact or less than 6 feet (1.83 meters) apart, about half the width of many cubicles.
They say it is difficult to predict wind currents over such short distances. Passengers have some control through individual air vents called "gaspers" above each seat. Generally, screwing them "gives a little improvement, but no guarantee," Jones said.
Inside Plane Empty Dubai Airport June Stock Photo 1104436148
Even if filtered, a precise blast of air can, in a worst-case scenario, push nearby virus particles into a passenger's face. On the other hand, an air shower can have a positive effect in limiting the lateral movement of air.
Faced with similar questions, Boeing and Airbus deployed engineers to study seat-to-seat airflow - using the same advanced physics used in wind tunnel testing of wings.
"We are actively doing simulations to see if we can provide something for private jets," Dumont said.
The risk of in-flight contamination has been linked to at least the 2003 SARS outbreak, but no link has been proven.
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In March of that year, a 72-year-old man infected with SARS flew from Hong Kong to Beijing. At least 22 of the 119 passengers and two crew members later contracted the disease. This is the only significant case of infection on the plane, but it requires measures to prevent sick passengers from getting on the plane.
Such preventive measures should be part of a strategy to keep the new virus off planes, Delaney said. Research into technologies such as UV-curing systems and antimicrobial materials may join the fight in the future.
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