What is an airpocket? Why is it dangerous to aeroplanes?
474883
an air pocket is what it means in plain english, a "pocket", only in this case , it is not devoid of air, it is a small mass of air which has a lower pressure than the surrounding air presure. it can be pictured as a ditch on the road.the same effect on a car takes place.a sudden upward/downward movement. i think an air pocket is caused due to wind turbulence especially near the Jet streams
375004
Snakes on a plane?\nThat can turn into some wild/crazy fun...lol
835369
However, writer Douglas Adams observed that, "...because flight recorders are made out titanium\n\nhttp://en.wikipedia.org/wiki/Black_Box_%28transportation%29
119494
What kind of "safety"?
107381
I agree, your English is poor but I think you are asking:\n\nWhen flying in aeroplane, how much pressure is outside? \n\nThe exact outside pressure will depend on the altitude at which you are flying. At a common cruising altitude of  37,000 feet, the outside air pressure is about 3.2 psi. At sea level it is 14.7 psi.  \n\nWhy does it sometimes shake?\n\nFlying in an airplane through air is just like riding in a car along a bumpy dirt road or a ship across choppy open water. The air, while invisible, is very much like an ocean and is always in motion while the aircraft moves through it. The more turbulent the air mass, the more the plane will bouce or shake as it passes through it. At high speeds the air takes on fluid like properties around an aircraft. The oceans are not always calm and glassy and neither is the air which is a constant mass in motion. Just like a journey on the seas or a country road, you cannot always expect your journey to be completely smooth.
5514
Yep, the dude above is right (I think, I didn't read it completely, too long I almost fell asleep!) but anyhow, it's not only the birds, for example if you fall from a plane or something and grab unto one of those lines then you wouldn't hurt yourself, but for example if you grabbed one line with one hand and another line with the other than that would be it for you...
677923
Drag is the force of the air which interferes with the speed of the plane
1177490
You are absolutely right, these security precautions are  window dressing. Unfortunately that's really all we can do. Airport security is simply for the peace of mind of the passengers.  I think that's all law enforcement is, window dressing. In a free society, that's what we get, it's a trade off for freedom.  If someone wants to break the law, they will. But the only way to prevent someone from breaking the law in the first place is to enact something out of 1984, and I sure don't want to be a part of that.\nI seriously doubt that if airport security had confiscated the box cutters on 9/11 it would have stopped those guys from highjacking the planes! they would have done whatever they had to. The more we try to control the future the more out of control this country is going to get. This crap happens, there is nothing anyone can do to stop bad things from happening to good people. We need more faith, not more security.\nGood luck, and calm down, it's going to be ok.
90876
i hope you know that this things are dangerous. a simple search using yahoo will ansewr your question. what do you want to do with it anyway?
277831
that sounds dangerous.  someone could suffocate.
531804
I looked at the barf bag on my plane and did not find any warnings restricting its use. I think all the restaurant doggie bags should switch to barf bags so they don't leak all over your purse and seat on the way home. Lets hear it for the multi-purpose barf bag.
452683
the plane provides the illusion of protection: pull the window shade and you might not notice where you are at all.  also the sense of moving with respect to your surroundings is very slight.  you KNOW you're moving 500 miles an hour but the ground is moving very slowly.\n\nheights (i assume you're speaking of heights without any 'protection' between you and the fall) provide NO insulation.  it's you against gravity, and the edge seems dangerously close to you, in fact are you even subconsciously sneaking away from it?  NO protection at all, NO illusion of safety, nothing to catch your fall.\n\nwould you feel so safe in a glass- walled plane? :)
186602
the tail of the paper airplane is heavier than the nose\nand if the nose is not heavy enough \nunless you are very good at handicrafting\nthen the airplane will fall BACKWARDS on to the ground and get ruined\nthe paper clip keeps the nose a bit heavier exactly like a real airplane\nlike a jet\nnoses are heavier than tails
181325
1. General opinion is that chinese acrobats (or nutters!) used frames with silk to jump off high buildings as a stunt to entertain.  The first practical use of a parachute (as we would recognise it) was to escape damaged barrage balloons in WW1.\n2. Skydiving is a worldwide sport with many many lines of developement from materials to diving techinques ... a complete design free-for-all :-)\n3. basic equipment is a harness, main parachute and a reserve parachute - altimeters, helmets, gloves, automatic activation devices etc are used depending on the circumstances.\n4. Most important thing to consider is safety.  Jump safe both in equipment and attitude.  In practical terms height is your friend as it equals time to deal with possible problems.  Train well, listen well, look around and never ever ever assume you know it all. \n5. Skydiving in its most basic form involves leaving the aircraft and falling in a controlled manner.  This can be extended to other disciplines such as inverted body postions, freestyle displays and relative work (formations with others).  The part under canopy (parachute) while not 'skydiving' as such also has diciplines such as CRW (formations with others) and accuracy cometitions.\n\nHope this helps and blue skies =8-0    (<<< skydive smilie)
470007
The US government has blimps that are supposed to be used to fight crime.  So far they haven't done much good.  We've got a whole array of them along the US-Mexico border carrying radar equipment to look for drug smugglers in low flying aircraft.
863935
Yes, they absolutely are.  An air pocket is better called a vertical draft, or an updraft or a downdraft, depending on which direction is is moving.  The reason they are sometimes called air pockets, even though everything around it is also air, is that the vertical draft is typically a pocket of air at a different temperature than the surrounding air, which causes the vertical displacemet of air.\n\nVertical drafts are dangerous because they can lead to overcompensation by inexperienced pilots.  This is most commonly seen during landing, if the air pocket takes the form of a downburst.  The air spreads in all directions after hitting the ground, creating a headwind that causes a false indication of increased speed.  The pilot might then slow the forward speed, if he is not familiar with this phenomenon.  Once the headwind is cleared, the plane is no longer moving fast enough to provide lift force in the still air, and the plane can plummet to a crash.
812700
Protocol I, Art.42 of the Geneva Conventions forbids attacking parachutists who eject from damaged airplanes, and surrendering parachutists once landed, but specifically excludes airborne troops from protection. \n\nArt. 42 - Occupants of aircraft\n\n1. No person parachuting from an aircraft in distress shall be made the object of attack during his descent.\n\n2. Upon reaching the ground in territory controlled by an adverse Party, a person who has parachuted from an aircraft in distress shall be given an opportunity to surrender before being made the object of attack, unless it is apparent that he is engaging in a hostile act.\n\n3. Airborne troops are not protected by this Article.\n\nRatified 12 August 1949