Airplane toilets are literally the worst.
Airplane toilets aren’t as simple as just touching and flushing. Aviation experts have stunned travelers by revealing the “extraordinary” amount of engineering that has gone into ensuring people can operate safely at 40,000 feet.
Typically, in an airplane setting, the most mundane tasks, from boiling water to using the restroom, are elevated to a new level of difficulty due to safety concerns.
“Everything on the plane is twice as hard on the ground,” said Al St. Germain, an airline industry consultant who has worked for airlines such as Delta Air Lines and United Airlines. he told CNN.
Flushing aircraft toilets is prohibited due to aircraft weight restrictions. Not to mention, a crash will cause water to splash out of the toilet bowl. turbulence.
Fortunately, scientists have devised Plan B: Aviation. That’s right, waste is sucked out of the plane using differential pressure in a system patented by James Kemper in 1975 (rather than the passive siphon system employed in most ground toilets).
When a toilet user presses a button, a valve in the bowl opens and connects to a pressurized pipe. This will suck out the contents of the bowl like a high-altitude Hoover vacuum cleaner. Therefore, another name for this device is “vacuum toilet”. The valve then clicks closed.
“It’s like a vacuum cleaner, it’s the worst,” explained Nigel Jones, an aircraft engineer at Kingston University in London.
This suction effect is caused by the natural pressure difference between the cabin and the outside air that occurs as the plane rises into the sky (which does not occur when the plane is on the ground).
In fact, the vacuum sound is continuous throughout the fight, but it is only heard when the valve opens.
And, of course, there’s the age-old question of where does the contents go after being washed away?
Contrary to popular belief, waste is not just released into the sky from an airlock like in “Goldfinger,” but into pressurized waste tanks, usually located at both the rear and front of the aircraft. It will be sent.
These are then transferred to ‘honey wagons’, special waste disposal vehicles that transport the contents to the airport for processing.
Although this mechanism may seem strange, vacuum toilets boast many advantages over siphon-based toilets, even in regular non-flat-based installations.
According to HowStuffWorks.com, these include narrower drain pipes, the fact that these toilets don’t rely on gravity so water can flush in any direction, and of course, they flush with minimal water. Therefore, it can be said to be environmentally friendly.
On average, vacuum toilets use less than 0.5 gallons of water, compared to 1.6 gallons for water-saving toilets and up to 5 gallons (19 liters) for older toilets.
Best of all, the entire bowl is coated with Teflon, so everything slides right off and users don’t have to use a toilet brush.
Of course, these empty thrones are not without their drawbacks.
First, airplane toilets often get clogged, especially when passengers dump diapers or other unauthorized items into the toilet. Given the maze of plumbing, this can be a nightmare to fix.
In fact, due to the limited number of facilities, just one or two blocked johns is enough for the pilot to stop flying.
There is also the problem of leaking exhaust pipes, which inadvertently release sewage from aircraft into the atmosphere.
Since the outside temperature is usually below freezing, the liquid turns into a “popsicle” (popsicle?) when it comes into contact with air, forming what is known in the aviation industry as “blue ice.”
“It gets too heavy to stick to the maintenance panel of the toilet, and it flakes off. That’s what blue ice is,” Jones explained.
In 2021, an unfortunate man living near London’s Heathrow Airport… Poop scatters casually This is precisely because of this phenomenon.
To make matters worse, the plane was so close to the ground that the excrement didn’t have a chance to freeze beforehand.
