Pilot explains what it really means when there’s turbulence during a flight….

Turbulence is far and away the top concern of nervous flyers.

If you’re among those seeking reassurance, please refer to my earlier essay on the topic, a version of which also appears in chapter two of the my book. Many anxious passengers have found this discussion helpful.

READ IT HERE.

In the meantime, I’ll go ahead and reiterate some points:

plane storm

Turbulence is far and away the top concern of nervous flyers.

In the meantime, I’ll go ahead and reiterate some points:

1. First and foremost, turbulence is, for lack of a better term, normal. Every flight, every day, will encounter some degree of rough air, be it a few light burbles or a more pronounced and consistent chop that sometimes gets your coffee spilling and the plates rattling in the galley. From a pilot’s perspective, garden-variety turbulence is seen as a comfort and convenience issue, not a safety issue per se. It’s annoying, but it is not dangerous.

2. In rare circumstances, however, it’s worse, to the point where a plane’s occupants can be injured or, even more uncommonly, aircraft components can be damaged. How rare? Put it this way: The type of encounter that United and Cathay ran into is the sort of thing even the most frequent flyer will not experience in a lifetime. And of the small number of passengers injured each year, the vast majority of them are people who did not have their seat belts on when they should have.

3. Can turbulence occur unexpectedly — or, as the news people have been embellishing it, “out of nowhere”? Yes. Pilots receive weather and turbulence forecasts prior to flight; once aloft we get periodic updates from our dispatchers and meteorologists on the ground. We have weather radar in the cockpit, as well as our eyes to see and avoid the worst weather. And perhaps most helpful of all, we receive real-time reports from nearby aircraft. With all of these tools at our disposal, we have a pretty good idea of the where, when, and how bad of the bumps. But every so often they happen without warning. Almost always it’s a mild nuisance, but the lesson here is to always have your belt fastened, even when conditions are smooth.

4. Do pilots keep their belts fastened in the cockpit? Yes, always. Is this one of those things that, well, hey, we sometimes ignore and get lackadaisical about? No, and neither should you.

5. For what it’s worth, thinking back over the whole history of modern commercial aviation, I cannot recall a single jetliner crash caused by turbulence, strictly speaking. Maybe there have been one or two, but airplanes are engineered to withstand an extreme amount of stress, and the amount of turbulence required to, for instance, tear off a wing, is far beyond anything you’ll ever experience.

6. During turbulence, the pilots are not fighting the controls. Planes are designed with what we call positive stability, meaning that when nudged from their original point in space, by their nature they wish to return there. The best way of handling rough air is to effectively ride it out, hands-off. (Some autopilots have a turbulence mode that desensitizes the system, to avoid over-controlling.) It can be uncomfortable, but the jet is not going to flip upside down.

7. Be wary of analogies. You might hear somebody compare turbulence to “driving over a rough road,” or to “a ship in rough seas.” I don’t like these comparisons, because potholes routinely pop tires, break axles and ruin suspensions, while ships can be capsized or swamped. There are no accurate equivalents in the air.

8. Be wary of passenger accounts in news stories. Not to insult anyone’s powers of observation, but people have a terrible habit of misinterpreting and exaggerating the sensations of flight, particularly if they’re scared. Even in considerably bumpy air — what a pilot might call “moderate turbulence,” a plane is seldom displaced in altitude by more than 20 feet, and usually less. Passengers might feel the plane “plummeting” or “diving” — words the media can’t get enough of — when in fact it’s hardly moving.

9. Will climate change increase the number of severe turbulence encounters? Possibly, but in the meantime remember there are also more airplanes flying than ever before. The worldwide jetliner fleet has more than doubled in the past 20 years, and it continues to grow. It stands to reason that as the number of flights goes up, the number of incidents will also go up, regardless of changes in the weather.

Read the original article on AskThePilot.com. Copyright 2015. Follow AskThePilot.com onTwitter.

Source…….Patrick Smith…ask the pilot.com ….www.businessinsider .com

Natarajan

Moon expense claims, MacGyver moments and other interesting Buzz Aldrin facts…

Former NASA astronaut Buzz Aldrin is pretty clear with about his thoughts on travel to Mars.

AMERICAN astronaut Buzz Aldrin is best remembered for being the second man to set foot onto the surface of the moon during NASA’s Apollo 11 mission.

However, there is much more to the famed astronaut than meets the eye.

Here are 10 facts about 85-year-old that might surprise you.

1. BORN TO WALK ON THE MOON

Buzz’s parents were Edwin Eugene Aldrin Sr and Marion Aldrin.

Nothing seems out of the ordinary here until you discover the mother of the man selected for the Apollo 11 mission was actually born Marion Moon.

So that means Buzz’s career choice was either destiny or a very big coincidence.

2. HIS OWN FIRST ON THE MOON

He may not have been the first man to set foot on the moon, but Buzz Aldrin does hold the dubious honour of being the first man to urinate there.

While making his way down the lander’s ladder, nature came calling and Buzz was forced to perform a lunar leak into a special bag in his space suit.

3. EXPENSE CLAIM

For many, being able to set foot on the moon would be a prestigious honour, but for Buzz it wasn’t enough.

Once returning to Earth, he submitted an expense claim for the Apollo 11 mission, which asked to be reimbursed $AU46.33.

The claim was very accurate in its depiction of “points of travel” with Buzz detailing his travels from Houston to Cape Kennedy to the moon to the Pacific Ocean to Hawaii and then back to Houston.

As the documents show “government meals and quarters” were provided throughout the July 1969 mission, Buzz did not place a claim for those.

However, he did claim for the use of a car for travel between airports on his way to the launch at Cape Kennedy.

The claim was paid by NASA.

4. COOL AS A CUCUMBER

After exploring the surface of the moon, Neil Armstrong and Buzz Aldrin made their way back into the lander so they could start their return journey to Earth.

However, once inside, Buzz discovered a broken circuit breaker lying on the floor of the module.

Following a brief search, it was discovered the circuit breaker was from the ascent engine — a vital component required to lift the lander off the moon.

After phoning mission control for advice, the astronauts were to told they would have to wait overnight for a solution.

So with the possibility of an indefinite stay on the moon surface looming, Buzz did something strange.

He spread out on the floor of the landing module and went to sleep, obviously completely unfazed by the hiccup.

5. MOVE OVER MACGYVER

The following morning, Buzz was told getting the breaker pushed back in was the only solution to getting the lander back into space.

With the component being electrical and his fingers being too large to do the job, Buzz began searching for a tool to use.

The solution came in the form a felt-tipped pen he had in the shoulder pocket of his space suit.

After successfully pushing the circuit breaker in with his pen, the lander was ready for takeoff.

Even more impressive was the fact Buzz still has the very same pen sitting in his home.

6. CUSTOMS DECLARATION

If you think being on the first mission to the moon excludes you from filing those pesky customs declarations, you are sadly mistaken.

Upon returning to Earth, all of the astronauts on board Apollo completed and signed customs forms declaring they were brining “Moon rock and Moon Dust” back.

7. BECOMING BUZZ

Buzz Aldrin was born Edwin Eugene Aldrin Jr on January 20, 1930 in Montclair, New Jersey.

However, his family wasn’t all that keen on the name and ended up nicknaming him Buzz.

The nickname evolved from his younger sister who struggle to pronounce “brother” and would often say “buzzer”.

He legally changed his name in 1988.

8. FLYING HIGH

Long before he was an intergalactic traveller, Buzz had an interest in flying.

This saw him being a test pilot for US Navy and also serving a stint as a fighter pilot.

While on combat missions in Korea, Buzz earned the Distinguished Flying Cross medal for destroying two MIG’s and damaging another.

9. THOSE BLACK MARKS

There is iconic picture of Buzz Aldrin standing on the moon, but closer inspection shows there are two mysterious black marks on the front of his spacesuit.

These are the result of Buzz’s failed attempt to reboard the lander on the surface of the moon.

When trying to jump up to the lander, Buzz didn’t provide enough force and collected his shins on the button rung of a ladder.

Buzz Aldrin has a completely white suit, except for the marks on his shins.

Buzz Aldrin has a completely white suit, except for the marks on his shins.Source:News Corp Australia

10. ALL YOU NEED IS A PUNCH IN THE FACE

There are many conspiracy theories floating around questioning the legitimacy of the moon landing.

It is fine to speculate, just don’t approach Buzz Aldrin with your suspicions because if you call him a fraud, he might just punch you in the face.

Matthew Dunn news.com.au

Source….www.news.com.au

Natarajan

Prithvi-II, India’s Indigenously Developed Missile, Successfully Test Fired in Odisha….India

Prithvi-II, India’s indigenously developed nuclear capable missile was successfully test fired on Thursday. The missile has a strike range of 350 km, and it is capable of carrying 500 kg to 1,000 kg of warheads.

The test was a part of a user trial by the Army and was conducted from a mobile launcher at launch complex-3 of the Integrated Test Range (ITR) located at Chandipur, in Baleswar District of Odisha.

Prithvi-II

Source: Wikimedia

Prithvi-II is surface to surface missile thrusted by liquid propulsion twine engines. It uses advanced inertial guidance system with manoeuvring trajectory to hit the target. The navigation aid, inertial navigation system (INS), uses a computer, motion sensors and rotation sensors to calculate the position and velocity of a moving target without any external references.

Prithvi-II is the first missile to be developed by Defence Research and Development Organization (DRDO) under India’s Integrated Guided Missile Development Program (IGMDP).

prithvi2

Source: Twitter

It can operate with both liquid and solid fuels and can carry both conventional as well as nuclear payloads.

The trial data was conducted by Strategic Forces Command (SFC), which is part of India’s Nuclear Command Authority (NCA). It is responsible for management of India’s strategic nuclear weapons stockpile.

“The missile was randomly chosen from the production stock and the entire launch activities were carried out by the specially formed SFC and monitored by the scientists of Defence Research and Development Organisation (DRDO) as part of training exercise…The missile trajectory was tracked by DRDO radars, electro-optical tracking systems and telemetry stations located along the coast of Odisha,” a defence scientist told PTI.

The teams on the other side were on board a ship near the designated impact point in the Bay of Bengal. They monitored the splashdown and the terminal events. The last user trial of Prithvi-II was successfully conducted on February 19, 2015 from the same test range.

The Indian government had launched the Integrated Guided Missile Development Program in 1983 with the view making the country self-sufficient in terms of development and production of wide range of Ballistic Missiles, Surface to Air Missiles and more.

Source………..Tanaya Singh….www.the betterindia.com

Natarajan

Image of the Day…Northwest Australia From the Space Station’s EarthKAM…

Blue water and coastline photographed from space station

This stunning image of the northwest corner of Australia was snapped by a student on Earth after remotely controlling the Sally Ride EarthKAM aboard the International Space Station. The EarthKAM program allows students to request photographs of specific Earth features, which are taken by a special camera mounted on the space station when it passes over those features. The images are posted online for the public and students in participating classrooms around the world to view.

EarthKAM is the only program providing students with such direct control of an instrument on a spacecraft orbiting Earth, teaching them about environmental science, geography and space communications.The project was initiated by Dr. Sally Ride, America’s first woman in space, in 1995 and called KidSat; the camera flew on five space shuttle flights before moving to the space station on Expedition 1 in 2001. In 2011, NASA and Sally Ride Science installed a new camera system in a downward-pointing window on the station. This camera system is responsible for taking and downloading student image requests.

Image Credit: NASA/EarthKAM.org

Source…www.nasa.gov

Natarajan

Image of the Day….A Brighter Moon…

Dione and Enceladus

Although Dione (near) and Enceladus (far) are composed of nearly the same materials, Enceladus has a considerably higher reflectivity than Dione. As a result, it appears brighter against the dark night sky.

The surface of Enceladus (313 miles or 504 kilometers across) endures a constant rain of ice grains from its south polar jets. As a result, its surface is more like fresh, bright, snow than Dione’s (698 miles or 1123 kilometers across) older, weathered surface. As clean, fresh surfaces are left exposed in space, they slowly gather dust and radiation damage and darken in a process known as “space weathering.”

This view looks toward the leading hemisphere of Enceladus. North on Enceladus is up and rotated 1 degree to the right. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Sept. 8, 2015.

The view was acquired at a distance of approximately 52,000 miles (83,000 kilometers) from Dione. Image scale is 1,600 feet (500 meters) per pixel. The distance from Enceladus was 228,000 miles (364,000 kilometers) for an image scale of 1.4 miles (2.2 kilometers) per pixel.

The Cassini mission is a cooperative project of NASA, ESA (the European Space Agency) and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA’s Science Mission Directorate, Washington. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colorado.

For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov or http://www.nasa.gov/cassini . The Cassini imaging team homepage is at http://ciclops.org .

Credit: NASA/JPL-Caltech/Space Science Institute

Source…….www.nasa.gov

Natarajan

Image of the Day…”Fingerprints of Water on the Sand.”…..

Water tracks on sandy ground with straight lines of roadways crossing the terrain

NASA astronaut Kjell Lindgren took this photograph on Nov. 11, 2015 from the International Space Station, and shared it with his followers on social media. Lindgren wrote, “The delicate fingerprints of water imprinted on the sand. The #StoryOfWater.” The area photographed is located in Oman, approximately 20 km to the west-northwest of Hamra Al Drooa.

One of the ways research on the space station benefits life on Earth is by supporting water purification efforts worldwide. Drinkable water is vital for human survival. Unfortunately, many people around the world lack access to clean water. Using technology developed for the space station, at-risk areas can gain access to advanced water filtration and purification systems, making a life-saving difference in these communities. Joint collaborations between aid organizations and NASA technology show just how effectively space research can adapt to contribute answers to global problems. The commercialization of this station-related technology has provided aid and disaster relief for communities worldwide.

Image Credit: NASA

Source….www.nasa.gov

Natarajan

Image of the Day…China’s New Radio Telescope…FAST

The construction of FAST – China’s new radio telescope – is proceeding on schedule. When completed in 2016, it’ll be the largest radio telescope in the world

View larger. | Five hundred meter Aperture Spherical Telescope (FAST) in China.

Five hundred meter Aperture Spherical Telescope (FAST) in China.

The Five hundred meter Aperture Spherical Telescope (FAST) – now under construction in southwest China’s Guizhou Province – is going well. Construction began in 2011 and is set to be completed by September, 2016. When completed, China’s new radio telescope will be the largest in the world.

As its name suggests, this new radio telescope will have a diameter of 500 meters (1,600 feet). That’s in contrast to the Arecibo radio telescope in Puerto Rico, which is 305 meters (1,000 feet) across.

Like Arecibo, the new ‘scope lies within a natural hollow, or karst, in the landscape. When finished, it’ll have 4,600 triangular panels for reflecting and focusing the radio waves. Unlike Arecibo, which has a fixed spherical curvature, FAST will use active optics. Its surface will adjust in different directions with more flexibility than the surface of Arecibo. That means it’ll cover the sky within 40° from the zenith, or overhead point, in contrast to Arecibo’s 20° range.

A possible application is to listen for radio waves from other advanced civilizations, but there are many astronomical questions as well, which the telescope will help answer.

Li Di, the chief scientist of the National Astronomical Observatories Chinese Academy of Sciences,said:

FAST will remain the best in the world in the next 20 to 30 years after it is completed. FAST can answer questions not only limited to astronomy but questions about humanity and nature. The scientific potential of this telescope is hard to predict.

Bottom line: The Five hundred meter Aperture Spherical Telescope (FAST) in China is progressing on schedule and should be completed in September 2016.

Source….www.earth sky .org

Natarajan

Terrorism Attacks That Were Successfully Stopped Before Tragedy Occurred……..

Following the attacks in Beirut, Baghdad, and Paris, our newsfeeds were flooded with death tolls and prayers for survivors. We should all take the time to mourn those we’ve lost.

But we can’t let our grief get the best of us. We must also remember how many lives are saved because of the quick thinking of first responders and the government agencies that act predominantly behind the scenes. Because of them, so many people have been spared from harm.

Here are just a few of the many terrorist attacks that were stopped before anyone was hurt:

1. On December 22, 2001, Richard Reid attempted to detonate a shoe bomb.

On December 22, 2001, Richard Reid attempted to detonate a shoe bomb.

Nearly 200 people were aboard the international flight. Heroic passengers subdued Reid and the plane made an emergency landing in Boston.

2. In 2003, Iyman Faris, a double agent for Al Qaeda positioned in the FBI, was caught for possible plots to destroy the Brooklyn Bridge.

 

In 2003, Iyman Faris, a double agent for Al Qaeda positioned in the FBI, was caught for possible plots to destroy the Brooklyn Bridge.

Each day, some 125,000 motor vehicles, 4,000 pedestrians, and 2,600 cyclists cross the bridge.

3. Dhiren Barot was arrested in 2004 for suspected plots against the New York Stock Exchange, the World Bank, the International Monetary Fund, and the Citigroup Center.

Dhiren Barot was arrested in 2004 for suspected plots against the New York Stock Exchange, the World Bank, the International Monetary Fund, and the Citigroup Center.

It later surfaced that Barot planned to use limousines filled with “dirty” bombs for the attacks.

4. Shahawar Matin Siraj and James Elshafay were arrested in 2004 for plots to bomb the 34th Street – Herald Square subway station.

Shahawar Matin Siraj and James Elshafay were arrested in 2004 for plots to bomb the 34th Street – Herald Square subway station.

The popular station — close to Macy’s and Penn Station — is the third busiest stop in NYC’s entire subway system.

5. Back in 2006, seven men were arrested after allegedly plotting to bomb the Sears (now Willis) Tower and FBI offices.

Back in 2006, seven men were arrested after allegedly plotting to bomb the Sears (now Willis) Tower and FBI offices.

The tower features 110 floors of office, retail, and recreational space.

6. Abdul Kadir, a former member of Guyana’s parliament, was arrested with three other men in 2007 in connection with plans to bomb the jet fuel line at JFK Airport.

Abdul Kadir, a former member of Guyana's parliament, was arrested with three other men in 2007 in connection with plans to bomb the jet fuel line at JFK Airport.

Kadir was sentenced to life in prison.

7. Nineteen-year-old Hosam Maher Husein Smadi was arrested in 2009 for a plot to bomb a Dallas skyscraper.

 

Nineteen-year-old Hosam Maher Husein Smadi was arrested in 2009 for a plot to bomb a Dallas skyscraper.

The 60-story Fountain Palace is the fifth tallest structure in Dallas.

8. Umar Farouk Abdulmutallab was taken down by fellow passengers before he could detonate a bomb on a flight over Detroit.

He confessed to the Christmas Day incident and admitted to carrying plastic explosives in his underwear.

9. In 2012, Amine El Khalifi was arrested for a plot to carry out a suicide bombing at the United States Capitol.

In 2012, Amine El Khalifi was arrested for a plot to carry out a suicide bombing at the United States Capitol.

The Moroccan man believed he was working with Al Qaeda, but he was actually in contact with undercover FBI agents the whole time.

10. Born and raised in Massachusetts, Rezwan Ferdaus was arrested in 2011 for plots to attack the Pentagon, United States Capitol, and U.S. soldiers abroad with IED devices.

Born and raised in Massachusetts, Rezwan Ferdaus was arrested in 2011 for plots to attack the Pentagon, United States Capitol, and U.S. soldiers abroad with IED devices.

 

Ferdaus was working with and supporting Al Qaeda.

11. In May 2010, Faisal Shahzad was arrested for an attempted car bombing in Times Square.

He was captured 53 hours after the failed plot, boarding a flight with Pakistan as the final destination.

12. In 2007, six men were arrested when plans were discovered targeting New Jersey’s Fort Dix base.

In 2007, six men were arrested when plans were discovered targeting New Jersey's Fort Dix base.

According to The Washington Post, their aim was “‘to kill as many American soldiers as possible’ with mortars, rocket-propelled grenades, and guns.”

13. Syed Haris Ahmed and Ehsanul Islam Sadequee were caught after videotaping Washington-area buildings.

Syed Haris Ahmed and Ehsanul Islam Sadequee were caught after videotaping Washington-area buildings.

Before their arrests, they sent the footage to a London-based jihadist website.

Thanks to quick decision-making paired with countless hours of investigation, thousands — if not millions — of lives have been saved. It’s important to always remember and thank those who don’t get enough recognition. We salute you!

Source…Amanda Black….www.viralnova.com

Natarajan

ISRO Celebrated Diwali with Its Own Rocket – Indigenously Made Communications Satellite GSAT-15 ….

At exactly 3:04 am on November 11, at the Kourou spaceport in distant French Guyana in South America, the Indian Space Research organisation (ISRO) gave India it’s Diwali gift. It successfully launched an indigeneously made communications satellite GSAT-15, using one of the world’s largest rockets – the Ariane-5.

Then, after a flight of 43 minutes and 24 seconds, GSAT-15 separated from the Ariane 5 upper stage in an elliptical geosynchronous transfer orbit (GTO). The ISRO Master Control Facility at Hassan, Karnataka, took over the command and control of GSAT-15 after its separation from the launch vehicle.

An Arabsat communications satellite also accompanied the GSAT-15 on the same launch.

Made at a cost of Rs. 278 crores, the GSAT-15 satellite weighs 3164 kg. With 24 transponders in the ku band, GSAT-15’s primary role will be to boost direct-to-home (DTH) broadcasting.

gsat

Photo source: www.satellitetoday.com

It will also enhance the GPS-aided augmented navigation (GAGAN) payload operating in L1 and L5 bands, which will help in aircraft navigation. GSAT-15 also provides a replacement for the Ku-band capacity of INSAT-3A and INSAT-4B satellites, which are getting ready to retire. GSAT-15 has a life of 12 years.

Currently, India has a shortage of transponders in space. The Indian satellite system is only able to handle a third of the required capacity, with the rest being leased from foreign satellite companies.

“The launch of GSAT-15 will be one more step towards further strengthening the satellite navigation infrastructure and sustaining the communication infrastructure in the country,” said ISRO Chairman A S Kiran Kumar.

Source….Nishi Malhotra….www.the betterindia.com

Natarajan

Image of the Day….Crescent Pluto …

Pluto, backlit

Crescent Pluto, acquired as New Horizons sped past in July on its way deeper into the Kuiper Belt

Image via New Horizons spacecraft on July 14, 2015.

View larger. | Crescent Pluto. This world is 1,473 miles (2,370 km) wide. Image via NASA / JHU-APL / SWRI/ New Horizons spacecraft.

The New Horizons spacecraft looked back to a crescent Pluto, after sweeping past this world in July, 2015. The sun is behind Pluto in this image. New Horizons acquired the view using the Multispectral Visible Imaging Camera (MVIC) onboard.

Here, Pluto’s ice mountains Norgay Montes and Hillary Montes can be seen rising as high as approximately 11,000 feet (3,500 meters) above Pluto’s surface. The so-called Sputnik Planum within the Tombaugh Regio stretches to the horizon on the right.

The frigid, very thin, cold atmosphere is seen with layers of haze. The average surface temperature of Pluto is minus 367 Fahrenheit (minus 232 Celsius). If our own Earth cooled to the same temperatures, our oceans would freeze almost all the way down and our atmosphere would collapse and freeze into a layer of frozen gasses 35 feet (11 meters) thick.

 

Bottom line: As New Horizons sped past in July, it looked back to a crescent Pluto.

Source….www.earthsky.org

Natarajan