Davsey27
Senior Member
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Was thinking SFO or LAX to Cancun
Appreciate it
Appreciate it
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09 Jun 2015
During a recent business trip to visit our headquarters in Minneapolis, I was reminded how loud traveling can be.
An infant screamed into her mother’s ear (repeatedly), the airplane engine hummed for three hours, and loudspeaker announcements jolted me from my seat without warning.
So I did some more research to find out just how loud my trip was, and how it could affect my long-term hearing health.
There are countless sensations and noises involved in the operation of an aircraft before, during, and after a flight. Modern airplanes are highly complex machines with an array of moving parts that make noise and have attendant sensations.
The noises and sensations experienced in flight will be expounded upon a logical order from the start to the finish, with the endgame of helping a new or nervous flier get a greater understanding of the processes of flight and what to expect.
Why your emotions and senses go haywire on a plane
Jodi De Luca, a clinical psychologist in Colorado who considers the effect of altitude on emotions one of her areas of interest, says passengers might feel a lack of control over their environment or a sense of anxiety that something bad could happen on the plane. That prompts the brain to produce a stress hormone, which can result in an increased heart rate and faster breathing.
“It’s not just psychological or emotional, it’s also a physical and physiological event. It’s never any one variable. And that’s important,” she says. “We are cognitively, psychologically, emotionally [compromised], and now we’re physiologically compromised. The setup is perfect for an emotional vulnerability.”
Combine that with possible fatigue, plus immobilization, high altitude, reduced oxygen in the blood and dehydration due to dry air, and it’s a wonder everyone isn’t blubbering constantly.
...
Outside of mealtimes, just sitting on a plane can be uncomfortable thanks to the surroundings.
According to the World Health Organization, when a plane is at its typical cruising altitude of 36,000 to 40,000 feet, the air pressure in the cabin is equivalent to between 6,000 and 8,000 feet above sea level. The blood carries less oxygen than it would at sea level, a condition known as hypoxia, but the agency says healthy passengers usually tolerate the effects well.
However, there are still irritations. A passenger’s sense of balance can be thrown off by the movement of the plane, leading to motion sickness. And the cool, dry air in the cabin can dry out the eyes, nasal passages and mouth. Background noise is a constant, says Clayton Cowl, chair of the division of preventive, occupational and aerospace medicine at Mayo Clinic in Minnesota.
"There's a lot of white noise in a plane,” he says. “It’s not at a frequency type that would cause hearing loss, but it certainly is something that over time your senses adapt to.”
The change in cabin pressure can also cause gas in the body to expand, which leads to that familiar pain and feeling of blockage in the ears — as well as reduced hearing. Didi Aaftink, an occupational health physician who worked for the Dutch airline KLM for more than 12 years, says she frequently fielded questions about ear pain and airplanes.
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Welcome.Thanks for the reply guys
A Boeing 737 fuselage heads west on a BNSF priority freight at Bearmouth, Montana, on September 26, 2014. This fuselage is built by Spirit AeroSystems, and is being shipped from Wichita, Kansas to Boeing in Renton, Washington, for final assembly. The big load is riding specially-modified BNSF 89-foot flatcar No. 800122 and besides being an oversize load width-wise, the length of the fuselage is over 100 feet, so idler flatcars are also used for each one, under the tail section. The front of the flatcar is equipped with special framing to protect the oversize load during shipment. The “green” color of these fuselages is a thin protective coating applied at the factory to prevent the aluminum skin from oxidizing during shipment, and is removed before the airplane is painted.
BNSF's "rocket" pulls Boeing 737 fuselages south through Seattle towards Renton with a classic Burlington Northern painted GP38-2 leading.