ORIGINAL: AltaTed
OK Guy's, now that you stopped arguing about spinner failures that, by the way I learned lot's about spinner failures and what to stay away from with all your ''discussions''. Good information for all of us!
I'm now strictly into electric powered planes and some of these can spin 20,000- 30,000 rpm from what I have heard. The ''Jets'' using internal duct fans spin way up there so my earlier question was, 'Are these dangerous'' since these are housed inside the plane and must be bad for the internals of the planes when they blow but, are they dangerous to the fliers aroud them ?
AltaTed
There have certainly been incidents of fan failures...visit the EDF (electric ducted fan ) forums and do a search...you'll find that some of the high power set-ups are spinning 40,000 - 50,000+ r.p.m. so great care needs to be taken to use the best quality equipment. They are made of carbon fiber and are extremely strong (at least the good ones are ) but like anything man made / mechanical, they can fail.
From the early 80's up until 2005 we flew LOTS of ICDF here at Griffiss Air Force Base, and quite a few Turbines as well...I never saw a failure personally, but heard of a couple.
Usually the shroud contains the bits and pieces but an occasional stray part gets out.
Best thing to do is stay out of the plane of rotation of the fan / turbine wheel...same practice as in full scale aviation. Don't stand directly behind or in front either...