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    things you dont know about airplanes


    Posts : 9
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    Join date : 2017-12-17
    Age : 19
    Location : Nigeria

    things you dont know about airplanes

    Post by suntex on Thu Dec 21, 2017 10:24 am

    planes have changed a lot since the days of the
    Wright Brothers (or, perhaps more accurately,
    Brazilian inventor Alberto Santos). Those first
    wood-and-cloth contraptions are an entirely
    different species than the sleek Boeing
    Dreamliners of today.
    With the continual advancements in aerospace
    technology, it’s hard to keep up with all the
    amazing things planes today are capable of
    doing (and withstanding). Below, 11 things you
    didn’t know about airplanes and air travel.
    Airplanes are designed to withstand
    lightning strikes
    Planes are designed to be struck by lightning—
    and they regularly are hit. It’s estimated
    lightning strikes each aircraft once a year—or
    once per every 1,000 hours of flight time. Yet,
    lighting hasn’t brought down a plane since
    1963, due to careful engineering that lets the
    electric charge of a lightning bolt run through
    the plane and out of it, typically without
    causing damage to the plane.
    1*There is no safest seat on the plane
    The FAA says there is no safest seat on the
    plane, though a TIME study of plane accidents
    found that the middle seats in the back of the
    plane had the lowest fatality rate in a crash.
    Their research revealed that, during plane
    crashes, “the seats in the back third of the
    aircraft had a 32 percent fatality rate,
    compared with 39 percent in the middle third
    and 38 percent in the front third.”
    However, there are so many variables at play
    that it’s impossible to know where to sit to
    survive a crash. Oh, and plane crashes are
    incredibly rare.
    Some airplanes have secret bedrooms for
    flight crew
    On long-haul flights, cabin crew can work 16-
    hour days. To help combat fatigue, some
    planes, like the Boeing 777 and 787
    Dreamliners, are outfitted with tiny bedrooms
    where the flight crew can get a little shut-eye.
    The bedrooms are typically accessed via a
    hidden staircase that leads up to a small, low-
    ceilinged room with 6 to 10 beds, a bathroom,
    and sometimes in-flight entertainment.
    The tires are designed not to pop on
    The tires on an airplane are designed to
    withstand incredible weight loads (38 tons!)
    and can hit the ground at 170 miles per hour
    more than 500 times before ever needing to
    get a retread. Additionally, airplane tires are
    inflated to 200 psi, which is about six times the
    pressure used in a car tire. If an airplane does
    need new tires, ground crew simply jack up the
    plane like you would a car.
    Why cabin crew dims the light when a
    plane is landing
    When a plane lands at night, cabin crews will
    dim the interior lights. Why? In the unlikely
    event that the plane landing goes badly and
    passengers need to evacuate, their eyes will
    already be adjusted to the darkness. As pilot
    Chris Cooke explained to T+L: “Imagine being
    in an unfamiliar bright room filled with
    obstacles when someone turns off the lights
    and asks you to exit quickly.”
    Similarly, flight attendants have passengers
    raise their window shades during landing, so
    they can see outside in an emergency and
    assess if one side of the plane is better for an
    You don’t need both engines to fly
    The idea of an engine giving out mid-flight
    sounds frightening, but every commercial
    airplane can safely fly with just one engine.
    Operating with half the engine power can make
    a plane less fuel-efficient and may reduce its
    range, but planes are designed and tested for
    such situations, as Popular Mechanicsreported.
    Any plane scheduled on a long-distance route,
    especially those that fly over oceans or
    through uninhabited areas like the Arctic, must
    be certified by the Federal Aviation
    Administration (FAA) for Extended-range Twin
    Operations (ETOPS), which is basically how
    long it can fly with one engine. The Boeing
    Dreamliner is certified for ETOPS-330, which
    means it can fly for 330 minutes (that’s five
    and a half hours) with just one engine.
    In fact, most airplanes can fly for a surprisingly
    long distance with no engine at all, thanks to
    something called glide ratio. Due to careful
    aeronautical engineering, a Boeing 747 can
    glide for two miles for every 1,000 feet they
    are above the ground, which is usually more
    than enough time to get everyone safely to the
    Why there are ashtrays in the bathrooms
    The FAA banned smoking on planes years ago,
    but eagle-eyed passengers know that airplane
    lavatories still have ashtrays in them. As
    Business Insiderreported, the reason is that
    airlines—and the people who design planes—
    figure that despite the no-smoking policy and
    myriad no-smoking signs prominently posted
    on the plane, at some point a smoker will
    decide to light up a cigarette on the plane. The
    hope is that if someone violates the smoking
    policy, they will do so in the relatively confined
    space of the bathroom and dispose of the
    cigarette butt in a safe place—the ashtray, not
    a trash can where it could theoretically cause a
    fire. If you do smoke in the bathroom, expect
    a massive fine.
    What that tiny hole in the airplane window
    It’s to regulate cabin pressure. Most airplane
    windows are made up of three panels of
    acrylic. The exterior window works as you
    would expect—keeping the elements out and
    maintaining cabin pressure. In the unlikely
    event that something happens to the exterior
    pane, the second pane acts as a fail-safe
    option. The tiny hole in the interior window is
    there to regulate air pressure so the middle
    pane remains intact and uncompromised until
    it is called into duty.
    Why airplane food taste so bad
    Airplane food has a bad reputation, but the
    food itself isn’t entirely to blame—the real fault
    lies with the plane. A 2015 Cornell University
    study, reported by Time, found that the
    environment inside an airplane actually alters
    the way food and drink tastes—sweet items
    tasted less sweet, while salty flavors were
    heightened. The dry recycled air inside the
    plane cabin doesn’t help either as low humidity
    can further dull taste and smell making
    everything in a plane seem bland. According to
    a 2010 study from the Fraunhofer Institute for
    Building Physics in Germany, it’s about 30
    percent more difficult to detect sweet and salty
    tastes when you’re up in the air. Next time you
    fly, skip the meal, and maybe try a glass of
    tomato juice instead.
    About those oxygen masks
    The safety instructions on most flight include
    how to use the oxygen masks that are
    deployed when the plane experiences a sudden
    loss in cabin pressure. However, one that thing
    that the flight attendants don’t tell you is that
    oxygen masks only have about 15-minutes
    worth of oxygen. That sounds like a
    frighteningly short amount of time, but in
    reality that should be more than sufficient.
    Remember, oxygen masks drop when the
    airplane cabin loses pressure, which means the
    plane is also losing altitude. According to
    Gizmodo, a pilot will respond to that situation
    by donning an oxygen mask and moving the
    plane to an altitude below 10,000 feet, where
    passengers can simply breathe normally, no
    extra oxygen required. That rapid descent
    usually takes way less than 15 minutes,
    meaning those oxygen masks have more than
    enough air to protect passengers.
    Why planes leave trails in the sky
    Those white lines that planes leave in the sky
    are simply trails of condensation, hence their
    technical name of “contrails.” Plane engines
    release water vapor as part of the combustion
    process. When that hot water vapor is pumped
    out of the exhaust and hits the cooler air of
    the upper atmosphere, it creates those puffy
    white lines in the sky. It’s basically the same
    reaction as when you see your breath when it’s
    cold outside.

      Current date/time is Wed Jan 16, 2019 12:56 am