Multiply Design factor with Qualification Factor for spacecraft?
Multiply Design factor with Qualification Factor for spacecraft?
(OP)
Hi, I wonder if we need to multiply the limit load with all the factors at qualification test level.
Static load = Limit Load x Design Factor X Yield Design Factor X Qualification Test Factor?
If I am extracting the bolt forces from the FEM model, should I also consider fitting factor as well?
Thank you!
Static load = Limit Load x Design Factor X Yield Design Factor X Qualification Test Factor?
If I am extracting the bolt forces from the FEM model, should I also consider fitting factor as well?
Thank you!

RE: Multiply Design factor with Qualification Factor for spacecraft?
"Hoffen wir mal, dass alles gut geht !"
General Paulus, Nov 1942, outside Stalingrad after the launch of Operation Uranus.
RE: Multiply Design factor with Qualification Factor for spacecraft?
The test factors are just that, they apply to test loads, not to analyses.
RE: Multiply Design factor with Qualification Factor for spacecraft?
Seems like laziness; the customer copied/pasted some older spec and "updated" it with the actual requirement, but want you to do the math to get the right values. Hopefully, you'll catch it during the proposal phase and upcost your bit accordingly.
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers Entire Forum list http://www.eng-tips.com/forumlist.cfm
RE: Multiply Design factor with Qualification Factor for spacecraft?
"Hoffen wir mal, dass alles gut geht !"
General Paulus, Nov 1942, outside Stalingrad after the launch of Operation Uranus.
RE: Multiply Design factor with Qualification Factor for spacecraft?
RE: Multiply Design factor with Qualification Factor for spacecraft?
According to the launcher's specification, we need to apply 1.25 times to limit load for qualification level.
Limit load is provided by launcher.
For Acceptance Level : 1.10 x Limit Load
For Qualification Level : 1.25 x Limit Load
I am not sure if I need to multiply design factor on top of the factor above for qualification (for example): design factor x 1.25 x Limit Load...
RE: Multiply Design factor with Qualification Factor for spacecraft?
design factors apply to analysis, test factors apply to tests.
who is asking the question ? if you, is there someone there you can ask ? someone with the launcher team ?
"Hoffen wir mal, dass alles gut geht !"
General Paulus, Nov 1942, outside Stalingrad after the launch of Operation Uranus.