Hi, just to check the Grms for electronic equipment. Why is it smaller component (30gram) can take up to 15Grms,heavier component (400 gram) can only take 8Grms?
The levels given in SMC is acceptance levels. To achieve the qualification levels, you need to add 6 dB, which is 4 times the values you have it in the figure.
Yes... something like the picture below. The cross marked plate is resonated by the base in vertical direction. I tried to separate them but it is very difficult...
When are the reaction wheels 'spun-up'? I assume prior to launch so that they are 'stable' and any anomalies could halt the launch sequence.
Perhaps HRA coiled wire vibration Isolators tuned to Your purpose... solely intended for reducing G-Rms on the reaction wheels during launch?
Is there any way to 'cage' the RW and then start-it-up late into the launch sequence, reliably?
Regards, Wil Taylor
o Trust - But Verify!
o We believe to be true what we prefer to be true. [Unknown]
o For those who believe, no proof is required; for those who cannot believe, no proof is possible. [variation,Stuart Chase]
o Unfortunately, in science what You 'believe' is irrelevant. ["Orion", Homebuiltairplanes.com forum]