Why doesnt the airplanes have some...?

Question

kind of ""multiple automatic parachuting system on the seats"" if the companies claim thats safety is their target? maybe....expensive airplanes=expensive tickets=less travellers? sorry bout my english

Answer 1

Planes are designed and maintained according to rigorous regulations (at least in the US and countries that have associated regulatory agencies) such that the systems that could cause a serious incident are required to have safety features in them so that even if a failure occured, the aircraft could maintain flight and keep passengers alive. For instance, if you lost 1 engine of a modern 2 engine commercial passenger jet, that aircraft is designed to be able to sustain flight on one engine. Failure of both requires a series of unfortunate events, but even after that, you can still sustain flight through your flight controls which are required to operate despite the loss of power.

Putting in passenger evacuation systems actually increases the chance that something could go wrong, particularly if it required a powered ejacuation mechanism. If you have 100 bottle of a substance that can launch someone far enough away from the plane, you have 100 more ways that plane can be unnecessarily damaged. You would be adding more weight and complexity to put in the systems per seat, than to just make the aircraft less prone to critical failures. Parachutes and ejection systems would require more passenger training, and the environment that passengers would need to get out at would be inhospitable, to say the least (as mentioned in other responses). If you thought the seatbelt demonstration was annoying, this one would take at least half an hour. In all, the best thing for the passengers is an aircraft design that has a lower chance of getting into critical failures.

Take a look at the last few years of commericial aviation incidents on the NTSB website to see what good design can do. There are few critical failures (especially compared to automobiles), and the failures that do occur are because of human errors in piloting and judgement or in maintenance. No matter how you institute safety in design, there will always be some way for someone to mess it up.

Answer 2

At altitude, the outside air temperature is about -70 F. Everyone would freeze in less than a minute. Those who didn't would suffocate in 2 or 3 minutes due to lack of oxygen.

To avoid these problems as well as flailing injuries, the passengers would have to be in fighter-style ejection seats and be equipped with helmets and supplemental oxygen. Ejection seats are rocket-propelled. All but the fittest of passengers would suffer multiple compressive spinal vertebrae fractures.

Most accidents happen in the transition periods of takeoff and landing where the aircraft is too low for parachutes to deploy -- unless the ejection seats were used. Even then, the sequencing of the ejection seats would take too long to get everyone out.

Remember, these things are rocket-propelled and if it isn't done right, the guy in the seat in front of you will be cooked when your seat fires. Of course, the guy behind you fried your butt when he launched.

Pretty messy, huh??

Answer 3

One solution is the Ballistic Aircraft Recovery system (a parachute for the plane itself) which has been installed on smaller single engine planes like the Cirrus SR22. It has worked rather well has already saved lives. I have heard some noise about possibly expanding that technology onto larger airplanes in the future but with the way the idustry is financially right now, I doubt ill see it in my life time.

Answer 4

It's not practical. How do you get everyone out of the plane? The only time an air plane would need to be evacuated is if it was out of control. It is not possible to walk to an exit during this time.

If you had automatic ejection the entire top half of the air plane would have to be blown off to allow people to be ejected.

Answer 5

One answer... COST. All the above are true but it comes down to cost. Cost too much to develope and fly such a system. People would not be willing to pay the price to fly on such an aircraft.

Answer 6

Another big issue is the weight of a said system. One of the goals of aircraft designers is to make aircraft as light as possible. When you add weight to an aircraft, you decrease its performance. It takes a bigger runway to depart, climb performance is decreased, fuel burn is increased (which reduced the range), etc...

Answer 7

and if you will jump in the middle of the ocean? into a volcano? on a highway in California? you can fall in Lebanon, on the north pole, in NIGERIA!