[SS-VehDev] compos. nozzle?

[Ing. Roman Lev]

Bill & all,

NASA has released few documents about composite nozzles, I'll  find them out.  Some of them are not  free, I'll  try purchase them.

About the NC - is there somebody of as capable calculate the stress & required number of plies? Perhaps Rich? 

r+


>  ------------ Puvodni zprava ------------
>  Od: william colburn <space1space at sbcglobal.net>
>  Predmet: Re: [SS-VehDev]
>  Datum: 21.9.2005 20:19:11
>  ----------------------------------------
>  
>  Roman et al,
>  
>  Here is a sketch of a proposed composite nozzle for
>  the motor. It would take the place of the Titanium
>  nozzle. The Ti fabricator is having a problem with
>  creating the tooling for our design.
>  
>  A two or three part plug would be used, aluminum,
>  likely coated with powder teflon to assure release.
>  The inner surface is several layers of carbon/phenolic
>  and the outer layer is epoxy/glass. The attachment
>  ring is aluminum and the throat is graphite.
>  
>  Alignment of the ring to the nozzle proper is a
>  difficult and important feature.
>  
>  It appears that this nozzle could be less than 15 lbm,
>  very good for the design.
>  
>  BC
>  --- Ing. Roman Lev <r-composites at seznam.cz> wrote:
>  
>  > Hi all,
>  > 
>  > please find attached files - design proposal for
>  > heat testing of coupons for NC. Dimensions for
>  > example 1by 5", window in the insulation 1x1".
>  > Thermocouple would be embeded on the exposed
>  > surface, between layer of tested thermal insulation
>  > and outer skin, below the inside skin. All the
>  > samples would be heated under same conditions, time
>  > until bend would be indication of relative withstand
>  > capability against the exposition. First of all I
>  > would like to verify it on few "blind" coupons, just
>  > to verify reproducibility. Comments &, suggestions,
>  > please.
>  > 
>  > thanks
>  > r+> _______________________________________________
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>  > 
>  
>  
>