Aircraft Fuselage Decompression
Aircraft Fuselage Decompression
(OP)
Hi,
I am trying to find what would be the load on Aircraft Bulkhead during A/C decompression. It looks like a fluid mechanics problem. Any suggestions will be highly appreciated.
I am trying to find what would be the load on Aircraft Bulkhead during A/C decompression. It looks like a fluid mechanics problem. Any suggestions will be highly appreciated.





RE: Aircraft Fuselage Decompression
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RE: Aircraft Fuselage Decompression
since we're talking bulkheads, this implies a divider between two compartments. so you've a couple of scenarios ... one volume (larger or smaller) decompresses first, and the bulkhead is loaded by the other compartment (smaller or larger) which has only partially decompressed and continues to vent into the first compartment.
RE: Aircraft Fuselage Decompression
RE: Aircraft Fuselage Decompression
as you need to define ...
1) the puncture ... area and flow rate out into the atmosphere, and
2) the airflow (areas and flow rate/discharge coefficient) between the compartments.
some things come into play ...
blow-out panels ? (will limit the differential pressure and vent(rip apart) the two compartments)
access doors ? typically doors will close against an angle, or structure, so that the extire edge of the door is supported and the door would probably remain effective. but for pressure acting in the other direction (pulling the door away from this support) the only thing working is the door latch. if you've happened to have ordered a silly plastic latch (like we did) and you have to "show it good" well, the latch will work like a blow-out panel and fail (in a "controlled" manner) and limit the differential pressure ... ie the latch will probably fail, the door would open, and limit the pressure differential.
RE: Aircraft Fuselage Decompression
Suggest You start with SAE AIR 5661 Compartment Decompression Analysis
Regards, Wil Taylor
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RE: Aircraft Fuselage Decompression
RE: Aircraft Fuselage Decompression
Also available on IHS standards Expert if You have a subscription.
Regards, Wil Taylor
Trust - But Verify!
We believe to be true what we prefer to be true.
For those who believe, no proof is required; for those who cannot believe, no proof is possible.