Jerry Durand wrote: > > At 09:49 PM 5/5/2004, Pierce Nichols wrote: > >On Wed, 2004-05-05 at 21:44, [EMAIL PROTECTED] wrote: > > > > > Good point, against your premise. I'm a boater and I know that an > > > inflatable boat has a rigid, reinforced fiberglass V hull under it to > > > take the dynamic stress. > > > > Wrong; that's called an RIB. I was talking about the old-style fully > >inflatable Zodiacs. Zodiac and Avon still make them, you know. The > >slamming loads on those relatively low-pressure tubes at speed are of > >the same order as the Shuttle's max-Q. > > I don't know if they still do this, but some racing motorcycles had > pressurized frames for additional strength/light weight.
I know I've heard of pressurized lightweight tubular frames in some racing cars, but IIRC the pressure was more for crack detection (they were up against fatigue limits, and the frames didn't last forever) than for stiffening. -dave w _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
