Sauerstoff in 10`000 Meter höhe?

[Briseid]

Meine Cousine macht im Moment in einen Wettbewerb mit, und dort ist eine Frage die so lautet - WIE wird die Luft in einen Flugzeug auf X tausend Metern höhe zubereitet?

 

Da ich ja ein aviatik Freak bin wendete sie sich an mich, aber ehrlich gesagt - Ich habe null Ahnung, darum brauche ich eure hilfe!

 

Danke schon zum Voraus!

[CarstenB]

Ich habe mal im Technik-Bereich des Forums nach "Luft" gesucht und den hier gefunden:

http://www.flightforum.ch/forum/showthread.php?t=46498&highlight=Luft

[Thomas H.]

WIE wird die Luft in einen Flugzeug auf X tausend Metern höhe zubereitet?

In der Bordküche natürlich: dampfgegart oder Mikrowelle - je nach Airline und Klasse.

Thomas

P.S. Rezepte für gutes gelingen gibt es z.B. hier:

- http://de.wikipedia.org/wiki/Klimaanlage_%28Flugzeug%29

- http://de.wikipedia.org/wiki/Druckkabine

[Marc_H]

Ich habe dir mal das Kapitel aus dem Boeing 747-400 FCOM herausgesucht:

 

Air Conditioning System Description

Introduction

 

The air conditioning system supplies conditioned bleed air and recirculated cabin

air at a controlled temperature throughout the airplane.

The system supplies conditioned air to the flight deck shoulder heaters.

The system supplies ventilation for the passenger cabin:

• lavatories

• galleys

• flight deck crew rest

• door 5 crew rest

Pack control, zone temperature control, cabin air recirculation, fault detection, and

overheat protection are all automatic. Backup system control modes operate in the

event of system failures.

The airplane is divided into seven temperature zones:

• flight deck

• upper deck

• five main deck cabin zones A through E

 

Air Conditioning Packs

Three identical air conditioning packs cool bleed air from the engines, APU, or

high pressure air from a ground source. Bleed air is precooled before entering the

pack. The packs are controlled by two identical pack controllers, A and B. Each

controller has three separate channels, one for each pack. Control of the packs

switches automatically to the other controller at touchdown. If a controller detects

a fault in a pack channel, control of the respective pack switches to the other

controller.

Pack output increases during high pack demand periods (to compensate for a

failed pack or recirculation fan), or is limited during high bleed air demand periods

(such as for gear retraction).

When a pack controller is placed in NORM, A, or B, the pack valve opens, which

allows bleed air to flow into the pack.

The pack valve is controlled electrically by the pack controller and opens by bleed

air pressure.

Each pack valve has two flow settings, normal and high. During cruise, normal

flow minimizes bleed air demand on the engine to reduce fuel consumption.

Packs may be set manually to high flow by pushing the High Flow switch ON.

 

Air Distribution

Recirculation Fans

Recirculation fans assist the packs to maintain a constant ventilation rate through

the cabin. The fans draw cabin air through filters, then reintroduce the air into the

conditioned air distribution system. Two fans are located above the main

passenger compartments and two fans are located below the main passenger cabin

floor. If a fan overheat is detected, electrical power is removed.

The number of recirculation fans operating is configured by:

• phase of flight,

• the number of operating air conditioning packs, and

• pack flow rates

On the ground, during climb, and during descent, two of the four recirculation fans

operate. During cruise, all four of the recirculation fans operate.