[SS-VehDev] Fwd: [ROC-CHAT] Steel-toed nosecones...

[Lakestake Rocketry]

Good morning Vehicle Team,

I have been thinking a lot about the nose cone. We have a couple of people
with good composites expereince and skills, and an offer for Ti work. What
is the best design? If noone steps forward with knowledge by this evening
I'll look it up and let the team know. Any takers?

A friend of mine (aerospace engineer) has made an interesting offer...

Matt C

---------- Forwarded message ----------
From: John Wahlquist <wahlquist at altrionet.com>
Date: Sep 6, 2005 12:23 AM 
Subject: Re: [ROC-CHAT] Steel-toed nosecones...
To: ROC-CHAT at rocketeers.com

How about using foamed or fibrous bonded silica (aka shuttle tile) or maybe
even Carbon/Carbon. Much lighter than steel or aluminum and handles heat
even better. If someone wants to try this I can provide details on how to
make a compatible surface filler to smooth out the porous surface for the 
silica products.

<JSW>

-----Original Message-----
From: Rocketry Organization of California (ROC) Chat List
Sent: Monday, September 05, 2005 11:44 PM
To: ROC-CHAT at ROCKETEERS.COM
Subject: Re: [ROC-CHAT] Steel-toed nosecones...

> I've wondered about an ablative nose cone 

Well, I could add a few extra coats of paint. I was also thinking
about shaving off the end of the nosecone and replacing it with some
matching light aluminum chunk with higher-temp epoxy dumped in from the 
opposite (open) end of the nosecone. At least the majority of the
nosecone is plastic/fiberglass.

-Jim Moses

--- David Erbas-White <derbas at ARACHNEERING.COM > wrote:

> Jim Moses wrote:
>
> >At what speed is in necessary to do something different to a
> fiberglass
> >or plastic nosecone to deal with the nosecone heat and prohibit
> melting
> >of the nosecone?
> >
> >If I put some kind of a metal cap on the nosecone, how far down must
> it
> >extend to work correctly.
> >
> >
> > 
> >
> >
>
> I don't know the answer, but in wondering about it, I've wondered
> about
> an ablative nose cone -- much like a re-entry heat shield. Thoughts?
>
> David Erbas-White 
>





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