(basically the basic functions that someone can relate that is not familar on how ANY mechanical assembly system functions)
2006-11-29 04:00:16 · 6 answers · asked by tropic_lacious 1 in Cars & Transportation ➔ Aircraft
Chris has it right. Sorry Chappie, but you're both right and wrong on this one. The "strings", or lanyards as they are properly called, from each mask is attached to the same pin, because there is only one oxygen generator per panel. The first one that pulls the mask pulls the pin and activates the generator. All the masks are supplied at the same time whether or not they are being used, but don't worry there is plenty of oxygen available there.
2006-11-29 07:21:42 · answer #1 · answered by Jerry L 6 · 1⤊ 0⤋
For passengers when the masks are dropped either manually by the cockpit crew or automatically by a pressure sensor. Each seat row assembly will have it's own oxygen generator. When you pull on the mask it is attached to a pin which is spring loaded to hit a firing pin which starts a chemical reaction where oxygen is produced. Oxygen will be produced for only about 15 minutes which is enough time to get to a lower altitude where oxygen is not needed.
For the flight crew a metal cylinder has high pressure (1800 PSI) oxygen stored. The cylinder has a pressure reducer attached to it to bring the pressure down to about 50 PSI to the crews masks.
2006-12-02 08:04:03 · answer #2 · answered by Doug G 3 · 0⤊ 0⤋
Sorry but there is no liquid oxygen in the crew breathing oxygen bottle. It is highly compressed oxygen gas (1850 PSI). I don't know what is in those little oxygen generators but when activated the combination of the materials inside make (generate) breathing oxygen. And if you have ever set one off you would know that the chemical reaction makes the container exterior really heat up just like tear gas canisters. Remember the Value Jet crash, there were O2 generators in the baggage compartment one got set off somehow and started a chain reaction which resulted in a fire and crash. The sensing unit which triggers the deployment of the masks due to lack of cabin pressure is called the altemetric valve.
2006-12-01 12:47:27 · answer #3 · answered by islander 5 · 0⤊ 0⤋
The very basics?
There are oxygen generators which are triggered when the masks are pulled down, they are one time canisters and contain a solid which emits oxygen. The masks are deployed when the cabin absolute pressure altitude exceeds a preset value (or in other words the cabin pressure falls below a preset value).
The crew oxygen system uses bottled liquid oxygen which is supplied to their masks via a regulator.
2006-11-29 04:17:12 · answer #4 · answered by Chris H 6 · 1⤊ 1⤋
Adding to Chris H.'s answer, the O2 masks in the plane I fly have a little string with a pin in them. When the passenger pulls down the mask to put it on, the pin gets pulled and oxygen starts to flow. Masks that don't get pulled down don't get their pin pulled, and therefore don't emit oxygen, which saves the limited supply for the passengers that need it.
2006-11-29 05:44:34 · answer #5 · answered by Chappie 2 · 0⤊ 0⤋
when aircraft lose pressure... masks are triggered to fall and supply people with air to breathe
2006-11-29 11:58:51 · answer #6 · answered by Anonymous · 0⤊ 0⤋