The similarities between the doomed Boeing 737 Max 8 jet that crashed in Ethiopia last weekend, killing 157 people and the fatal Lion Air crash in October keep growing.
According to a New York Times report, investigators at the crash site of the Ethiopian Airlines flight found evidence that suggests that the plane’s stabilizers were tilted upward. At that angle, the automatic stabilizers would have forced down the nose of the jet — a similarity with the Lion Air plane that crashed into the Java Sea 12 minutes after takeoff, killing all 189 passengers and crew.
Both investigations are both still in the early phases, but the new evidence potentially indicates that the two planes both had problems with a newly installed automated system, the Times’ Jack Nicas, Thomas Kaplan and James Glanz report. The new Boeing 737 Max 8 system, known as MCAS, is intended to prevent a stall:
Boeing designed the 737 Max as an updated, more fuel-efficient version of its best-selling 737 aircraft. The Max’s engines were bigger and mounted farther forward on its wings, a configuration that could push the nose upward toward a stall in certain circumstances. To compensate for that, Boeing installed MCAS to automatically push the nose down to counteract those forces, in the hopes of making the 737 Max safer and able to handle like its predecessors.
But the two crashes in the last few months are worrying signs that the system could have unforeseen risks.
In the case of the downed flight in Ethiopia, investigators at the crash site are specifically looking at a piece of equipment known as a jackscrew, which controls the angle of the horizontal stabilizers. The stabilizers could have been tilted for other reasons, but they can be triggered by the MCAS. And in the Lion Air crash, investigators are also examining whether the MCAS set up a struggle between the new flight control system and the pilots, as Nicas, Kaplan and Glanz note:
The automated system, which may have pushed down the nose of the aircraft in the Lion Air crash, activates if just one of two sensors mounted on the aircraft’s exterior says the nose is too high. That means a single malfunctioning sensor could force the plane in the wrong direction, as has been theorized in the Lion Air crash.
Boeing and the Federal Aviation Administration have continued to stand by and support the safety of 737 Max aircraft. Even so, the company is pushing to finish a software update and push it out by April that will modify features of the jet around the automated system.
This could have major ramifications for one of the world’s largest global aircraft manufacturers and defense contractors
The two crashes have raised questions about the safety of the Boeing planes, which are used by airlines around the world.
Earlier this week, the United States decided to temporarily ground all Boeing 737 Max 8 and 9 planes. The US was one of the world’s last large countries to do so on Wednesday, following the lead of China, the member states of the European Union, and several other countries.
Three US-based airlines — American, Southwest, and United — have Boeing 737 Max jets in their fleets. (American Airlines has 24 Max 8 jets, Southwest has 34, and United has 14 Max 9s, according to NPR).
In total, some 300 planes in operation were grounded globally. In addition, there are more than 4,000 737 Max planes are on order that have yet to be delivered, and according to Bloomberg, the crashes have put those $600 billion worth of orders in jeopardy of not being completed.
Whether there was an issue with the plane’s new features on both crashes or not, the global community is no longer so sure about Boeing after the back-to-back tragedies: The company is now worth $25 billion less than it was at this time last week,
20 People Share Secrets From Their Jobs and Now We Can’t Sleep Well
Almost every job has its own secrets and nuances that very few people know. The people of different professions shared secrets from their jobs on Reddit and on Twitter and some of their stories may seriously change the way you see the world.
We at Bright Side, of course, don’t have any secrets like these, but as it turns out, not all other professions are as transparent as they seem to be.
- Truck driver: 9 out of 10 truck drivers travel with a smartphone on their windshield watching a TV-series. Stay away from big trucks.
- Disney World employee: There are secret tunnels underneath both Epcot and the Magic Kingdom (and probably other parks too) that enable the cast members to travel across the park pretty quickly and easily.
Comment from a park-goer: My father suffered a heart attack while visiting Epcot. I have never witnessed a faster medical response with professionals appearing from seemingly nowhere with just as fast transport through underground tunnels. It was a lifesaver. He was transported to a Disney hospital where he received great care after an emergency surgery and our stay was extended by 3 weeks.
- IT support people: (help desks, computer repair shops, Geek Squad, etc.) are mostly just better at Googling than you are.
- Employee at a flour factory: Wheat flour is not actually white. We use chlorine to make it look more attractive. This also increases the gluten level in flour, and this is why people are more gluten-sensitive today.
- Rescue team member: When you are a young lifeguard, you always have a radio with you 24/7. And you always listen to what happens in the city. If you are going, for example, to a birthday party in your own car and then you hear there is a fire on a nearby street, you turn the car and drive there! (I have my own gear in the car). @Moscow_Spasatel
- Olive oil factory employee: We had only one kind of oil but we put it in 27 different containers and sold it at different prices. Some of them were labeled as imported, some were called the highest quality oil. But it was the same oil in every single bottle.
- IT-service engineer: When someone is fixing your computer, they also often look through the data on your hard drive searching for something funny or embarrassing. So, before you give your computer to an IT service, clear your browser history, and copy all the important data to an external drive.
- Candle factory: Paraffin candles are dangerous and poisonous. Because I know what we added in there (even to the candles that say “100% paraffin”), I will never ever use candles again. If you need to use them for some reason, buy candles made of bee’s wax without any scents.
Sommelier: Wine isn’t vegan. It’s not even vegetarian in some cases. The filtering (refining) process uses egg whites, and sometimes isinglass (fish parts).
- Movie theater: A large bag of popcorn that costs the customer $5.99 (at the time) cost the movie theatre 6 cents to produce, including the butter, the kernels, the bag, the power used by the popper and the time it took the concession employee to fill up the bag and give it to the customer.
- Internet services: Most “subscription services” will raise their prices over time because they expect you to just live with it. This applies to phone bills, cable packages, internet service, insurance plans… Call up, politely complain about the price. Skip the canned “well the price has gone up because inflation/rising costs/age/end of promotion” and continue to politely say it’s too much, your budget can’t handle all your outgoings and you may need to drop the service. Either you are speaking to someone who can reduce the price, or they can put you through to a person authorized to reduce the price.
- Mechanic: If you want to go on vacation and you don’t know where to leave your car, get it to a mechanic. Many people do this. It’s ridiculously cheap and you can be away for a month! It is much more expensive to use parking lots. @Neformatws
- Pharmacist: I’ve worked at several factories that manufacture medications. And the rules were the same everywhere: if you dropped pills on the floor, just put them back into the bottle. So, maybe your medications are not as clean as you think.
- Librarian: The amount of toilet paper, random items, and bills used as bookmarks that are left in returned library books is unbelievable!
- Doctor: We spend so much time to be good at what we do, that we know almost nothing about other things.
Is there something about your job that is kept secret?
The spring equinox is Wednesday, March 20: 7 things to know about the first day of spring.
The vernal equinox is upon us: On Wednesday, March 20, both the Northern and Southern hemispheres will experience an equal amount of daylight. For those of us in the Northern Hemisphere, it marks the beginning of spring, with daylight hours continuing to lengthen until the summer solstice in June. For those south of the equator, it’s the beginning of autumn.
Technically speaking, the equinox occurs when the sun is directly in line with the equator. This will happen at 5:58 pm Eastern time on Wednesday. (A few hours later, at 9:43 pm, you can look out for the “supermoon”, the last one until 2020.)
Below is a short scientific guide to the most equal night of the year.
1) Why do we have an equinox?
The equinox, the seasons, and the changing length of daylight hours throughout the year are all due to one fact: The Earth spins on a tilted axis.
The tilt — possibly caused by a massive object hitting Earth billions of years ago — means that for half the year, the North Pole is pointed toward the sun (as in the picture below). For the other half of the year, the South Pole gets more light. It’s what gives us seasons.
Here’s a time-lapse demonstration of the phenomenon shot over the course of a whole year from space. In the video, you can see how the line separating day from night swings back and forth from the poles during the year.
And here’s yet another cool way to visualize the seasons. In 2013, a resident of Alberta, Canada, took this pinhole camera photograph of the sun’s path throughout the year and shared it with the astronomy website EarthSky. You can see the dramatic change in the arc of the sun from December to June.
This is a 6 month pinhole photo taken from solstice to solstice, in Medicine Hat, Alberta, Canada. We are one of the sunniest cities in Canada, and this shows it nicely.
Posted by Ian Hennes on Saturday, December 21, 2013
(You can easily make a similar image at home. All you need is a can, photo paper, some tape, and a pin. Instructions here.)
2) How many hours of daylight will I get Wednesday?
Equinox literally means “equal night.” And during the equinox, most places on Earth will see approximately 12 hours of daylight and 12 hours of night.
But not every place will experience the exact same amount of daylight. For instance, on Wednesday, Fairbanks, Alaska, will see 12 hours and 15 minutes of daylight. Key West, Florida, will see 12 hours and six minutes. The differences are due to how the sunlight gets refracted (bent) as it enters Earth’s atmosphere at different latitudes.
That daylight is longer than 12 hours on the equinox is also due to how we commonly measure the length of a day: from the first hint of the sun peeking over the horizon in the morning to the very last glimpse of it before it falls below the horizon in the evening. Because the sun takes some time to rise and set, it adds some extra daylight minutes.
Check out TimeAndDate.com to see how many hours of sunlight you’ll get during the equinox.
3) Over the course of the entire year, does every spot on Earth get an equal number of daylight hours?
In the summer months, the northernmost latitudes get a lot of daylight. Above the Arctic Circle, during the summer, there’s 24 hours of daylight. In the winter, the Arctic Circle is plunged into constant darkness.
So does this mean the number of daylight hours — in total, over the course of the year — equal out to places where the seasonal difference is less extreme?
The answer to this question is somewhat surprising: Roughly speaking, everywhere on Earth sees a similar number of daylight hours every year. But the equator actually gets slightly fewer daylight hours than the poles.
As astronomer Tony Flanders explained for Sky & Telescope magazine, sunlight at the poles gets refracted more than sunlight at the equator. That refracting results in the visible disc of the sun being slightly stretched out (think of when the full moon is near the horizon and looks huge — it’s being refracted too). And the refracted, stretched-out sun takes slightly longer to rise and set. Flanders estimated that the equator spends around 50.5 percent of its year in sunlight, while the poles spend between 51.5 and 53 percent of their years in sunlight.
And, of course, this is how much sunlight these areas could potentially receive if the weather were always perfectly clear; it’s not how much sunlight they actually see, nor the strength of the sunlight that hits their ground. “Where are the places on Earth that receive the largest amount of solar radiation?” is a slightly different question, the answer to which can be seen on the chart below.
4) Can I really only balance an egg on its tip during on the equinox?
Perhaps you were told as a child that on the equinox, it’s easier to balance an egg vertically on a flat surface than on other days of the year.
The practice originated in China as a tradition on the first day of spring in the Chinese lunar calendar in early February. According to the South China Morning Post, “The theory goes that at this time of year the moon and earth are in exactly the right alignment, the celestial bodies generating the perfect balance of forces needed to make it possible.”
This is a myth. The amount of sunlight we get during the day has no power over the gravitational pull of the Earth or our abilities to balance things upon it. You can balance an egg on its end any day of the year (if you’re good at balancing things).
5) Is there an ancient monument that does something cool during the equinox?
During the winter and summer solstices, crowds flock to Stonehenge in the United Kingdom. During the solstices, the sun either rises or sets in line with the layout of the 5,000-year-old-monument. And while some visit Stonehenge for the spring equinox too, the real place to be is in Mexico.
That’s because on the equinox, the pyramid at Chichen Itza on the Yucatan Peninsula puts on a wondrous show. Built by the Mayans around 1,000 years ago, the pyramid is designed to cast a shadow on the equinox outlining the body of Kukulkan, a feathered snake god. A serpent-head statue is located at the bottom of the pyramid, and as the sun sets on the day of the equinox, the sunlight and shadow show the body of the serpent joining with the head.
This is easier to see in a video. Check it out below.
6) Are there equinoxes on other planets?
Yes! All the planets in the solar system rotate on a tilted axis and therefore have seasons. Some of these tilts are minor (like Mercury, which is tilted at 2.11 degrees). But others are more like the Earth (tilted at 23.5 degrees) or are even more extreme (Uranus is tilted 98 degrees!).
Below, see a beautiful composite image of Saturn on its equinox captured by the Cassini spacecraft (RIP) in 2009. The gas giant is tilted 27 degrees relative to the sun, and equinoxes on the planet are less frequent than on Earth. Saturn only sees an equinox about once every 15 years (because it takes Saturn 29 years to complete one orbit around the sun).
During Saturn’s equinox, its rings become unusually dark. That’s because these rings are only around 30 feet thick. And when light hits them head on, there’s not much surface area to reflect.
7) I clicked this article accidentally and really just want a mind-blowing picture of the sun
The image above was taken by NASA’s Solar Dynamics Observatory, a spacecraft launched in 2010 to better understand the sun.
This past summer, NASA launched the Parker Solar Probe, a spacecraft that will come within 4 million miles of the surface of the sun (much closer than any spacecraft has been before). The goal is to study the sun’s atmosphere, weather, and magnetism and figure out the mystery of why the sun’s corona (its atmosphere) is much hotter than its surface. Still, even several million miles away, the probe will have to withstand temperatures of 2,500 degrees Fahrenheit.
It’s essential to understand the sun: It’s nothing to mess with. Brad Plumer wrote for Vox about what happens when the sun erupts and sends space weather our way to wreak havoc on Earth.
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