Aerospace
Can you open an aircraft door mid flight?
It is actually impossible to open a door mid flight! With the recent spate of news stories about inflight incidents involving unruly passengers, youmay wonder if it is indeed possible to open the door of an airliner inflight.
You cannot – repeat, cannot – open the doors or emergency hatches of an airplane in flight. You can’t open them for the simple reason that cabin pressure won’t allow it. Think of an aircraft door as a drain plug, fixed in place by the interior pressure. Almost all aircraft exits open inward. Some retract upward into the ceiling; others swing outward; but they open inward first, and not even the most musclebound human will overcome the force holding them shut. At a typical cruising altitude, up to eight pounds of pressure are pushing against every square inch of interior fuselage. That’s over 1,100 pounds against each square foot of door. Even at low altitudes, where cabin pressure levels are much less, a meager 2 p.s.i. differential is still more than anyone can displace — even after six cups of coffee and the aggravation that comes with sitting behind a shrieking baby. The doors are further held secure by a series of electrical and/or mechanical latches and follows with important aspects given below. (source)
Cabin pressurization:
Cabin pressurization is a process in which conditioned air is pumped into the cabin of an aircraft or spacecraft, in order to create a safe and comfortable environment for passengers and crew flying at high altitudes. For aircraft, this air is usually bled off from the gas turbine engines at the compressor stage, and for spacecraft, it is carried in high-pressure, often cryogenic tanks.
Digital Cabin Pressure Control System (DCPCS)
Pressurization becomes necessary at altitudes above 12,500 feet (3,800 m) to 14,000 feet (4,300 m) above sea level to protect crew and passengers from the risk of a number of physiological problems caused by the low outside air pressure above that altitude. It also serves to generally increase passenger comfort and is a regulatory requirement above 8,000 feet (2,400 m).
Plug door
The term “plug door” may also refer to a sliding bus door that is not actually held in place by pressure, but is mechanically wedged into place when closed.
A plug door is a door designed to seal itself by taking advantage of pressure difference on its two sides and is typically used on aircraft with cabin pressurization. The higher pressure on one side forces the wedge-shaped door into its socket, making a good seal and preventing it from being opened until the pressure is released.
Non-plug doors rely on the strength of the locking mechanism to keep the door shut whereas a plug door relies on the pressure differential to keep it shut.
Aircraft door safety devices
Due to differences in air pressure, it is usually not in fact possible to open an airplane door during flight at normal cruising altitudes, despite what you may have seen in the movies. This goes for all doors of an aircraft, including emergency exit and main doors. You could fuss with the opening mechanism as much as you like, but you wouldn’t ultimately be successful.
Warn!
Interfering with the operation of an aircraft is a criminal offense in some regions, however, so you may be penalized for touching the door during flight.
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Aerospace
Austrian Ministry of Defense selects the C-390 Millennium as its new military transport aircraft
The Austrian Ministry of Defense announced today the decision to select the C-390 Millennium aircraft as its new tactical transport solution. Embraer is honored to be chosen to support this important Air Force in Europe.
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Austria joins Brazil, Portugal, Hungary, and the Netherlands as the future operators of the C-390 Millennium multi-mission platform, an aircraft that is rapidly redefining the standards of tactical transport in the world defense market.
Embraer is ready to support the Austrian Ministry of Defense and Air Force in order to meet the demanding requirements of their acquisition process and is prepared to further strengthen the relationship with this nation.
A US fighter jet went missing in South Carolina during a training mishap. According to US military officials, the search for his missing aircraft was centered on two lakes north of North Charleston.
At around 2 p.m. (local time), the pilot evacuated and safely parachuted into a North Charleston neighborhood. He was transferred to a nearby hospital, where he was in stable condition.
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Authorities stated that they are currently looking into the cause of the pilot’s ejection. According to Salinas, the pilot of a second F-35 made a safe landing at Joint Base Charleston. The pilots and their aircraft were part of the Marine Fighter Attack Training Squadron 501, which is stationed in Beaufort, which is close to the Atlantic coast of South Carolina.
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Reuben’s Second Chance: From a Cage in Romania to African Wilderness
Imagine sitting in a small cage for 6 years. Would you rather enjoy life or give it up? One of the Lions was living alone in Romania and stopped roaring after being left alone in the cage with no other animals nearby.
Qatar Airways assists this lion in living its second life by transporting it from Romania to an African forest where he can enjoy the rest of his life with other lions.
The CEO of ADI (Animal Defender International) Wildlife Sanctuary, John Kramer, in South Africa, took the initiative to bring these lions back from Romania. The entire purpose of this Sanctuary is to give back to these animals from circuses, animals who have never seen their native land, animals who have never walked on grass, lived in tiny cages bare balls, never had the sun on their backs, and all they’ve done is sit in a box to entertain humans and have never experienced anything of their natural life.
The goal of ADI Wildlife Sanctuary is to give them back as close to the life they lost as possible, which is why they have such large habitats. The reason is that he was born in a privately owned zoo in Armenia, and the family decided to close the zoo and have the animals removed, leaving him behind. He’s been alone for 6 years, and he’s actually stopped roaring.
Qatar Airways’ Compassion Soars: Lion Rescued and Rehomed in Africa
They were out of options for a flight out of Armenia for Reuben due to the size of the crate and they didn’t know what they were going to do until Qatar Airways cargo stepped in and not only said that they would arrange the flights and bring in the special aircraft, but their We Care Programme paid for Ruben’s flight. They’ve been able to begin moving out and are so happy to get up Airways cargo for allowing Reuben to live the life he lost.
What they hope to accomplish for Ruben today in the habitat here is for him to hear the voices of other lions, and he will hear a lot of lion voices here, which will give him a second shot at life. The team is overjoyed because this battered Old Lion King will be walking on African soil for the first time, and the magic of him being back where he belongs, where his forefathers came from, and with his own kind again, but he will see them, hear them, smell them, he will literally be home, and he will spend the rest of his life in Freedom.
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