Handling/Abuse Loads for Aircraft Interiors 3

[dshaffer1001]

Does anybody know a good reference for this ?

I'm specifically concerned with military transport/Spec Ops aircraft, that will have big people wearing bulky flying gear moving about the cargo bay. There are various equipment racks and other furnishings in that cargo bay. It seem likely that, especially during turbulence, aircrew could be thrown against them, or grab them, lean on them, etc.

I've done some web searching, and there doesn't seem to be much literature on the subject. I would very much appreciate any wisdom you folks can give me.

 

[IRstuff]

What exactly is your question?

TTFN

FAQ731-376

 

[dshaffer1001]

Mainly, what loads will be applied to the various equipment racks, etc, when the aircrew grab them, lean on them, or bump into them.

I've seen references to Boeing D6-55441, which I gather is their guide to cabin furnishings like tables, etc, although I've never actually seen a copy. I've also seen various stress documents that make brief references to abuse loads, however nothing that goes into detail about how they are derived or where they should be applied.

I was wondering if there is an industry standard, or some sort of human factors analysis, that might document these loads in some detail.

 

[IRstuff]

I think you need to consider what the normal operating loads there might be, coupled with what landing shock and crash loads there might be.

TTFN

FAQ731-376

 

[WKTaylor]

dshaffer1001

You might find the following useful..

http://www.gama.aero/industry-standards

then click-on...
GAMA Publication 13 - Acceptable Practices Document, Cabin Interior Monument Structural Substantiation Method (Version - 1.0)

http://www.airweb.faa.gov/Regulator...286D3183A8A1D575862575C80048412B?OpenDocument

AC25-17A: TRANSPORT AIRPLANE CABIN INTERIORS CRASHWORTHINESS HANDBOOK

http://www.airweb.faa.gov/Regulator...49f24483ecc862569d00076b2cb/$FILE/AC25-18.pdf

Transport Category Airplanes Modified for Cargo Service

Regards, Wil Taylor

 

[SWComposites]

If this is for a military transport, why not ask the AF for the applicable requirements document?

 

[rb1957]

i would typically use 200 lbs for "ground handling" ... basically, pick a number you're comfortable with,given your specific operation.

alternatively, liberally cover your installation with "no hand hold here" labels ...

 

[YoungTurk]

I use 50 lbs for "graspable" objects, 100 lb for "leanable" surfaces, and 250 x 1.5 for "steppable" surfaces. All loads treated as ultimate.

 

[kellnerp]

liberally cover your installation with "no hand hold here" labels ...

Kind of like Indiana Jones. If you step in the wrong place...phhhhht....you go boom.

If you are doing military and spec ops you might consider the breaking point of the human body and the fact that turbulence might occur very close to the ground.

TOP
CSWP, BSSE

http://www.engtran.com

http://www.niswug.org

"Node news is good news."

 

[AviatorJim]

Anything installed or mounted in the jet built to the crashworthy standard will handle a guy stumbling. If you are wanting to protect the more delicicate pieces such as wiring, plumbing, or covers to prevent snagging or entanglement the numbers YoungTurk suggests are excellent. And a field visit to the folks you are doing the design for will tell what sort of stuff they have rattling around or being handled. An assesment of the environment might be the key to success.