[roc-chat] Re: Speed of Balsa
- From: Steve Trammell <stramm8235@xxxxxxxxxxx>
- To: roc-chat@xxxxxxxxxxxxx
- Date: Tue, 10 May 2011 22:33:52 -0400 (EDT)
Hey Jack does this mean I have to buy a 24mm Cesaroni case? Not a
problem, just curious because these sound pretty "interesting".
Steve Trammell
On Mon, May 9, 2011 at 7:50 PM, JACK GARIBALDI wrote:
Steve
This week I will have the new E75 and G100 24mm motors from
Cesaroni, get another one out of the closet.
Jack G
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From: Steve Trammell
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Subject: [roc-chat] Re: Speed of Balsa
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I put sealed balsa fins, clipped delta style, 3/16" thick, on a
bashed Estes SkyWriter and it didn't survive the transition through mach
on an AT single use, 24mm F. Jack G. still delights in busting my
chops over that flight. It was an impressive shred though; biggest
piece left was the nose cone.
Steve Trammell
On Sun, May 8, 2011 at 5:53 PM, Jeff Gortatowsky wrote:
I know is a 'generalization' and there are many variables... but
in general any know what sort of acceleration or velocity makes one
say,
"Okay, 1/8 inch surface mounted fins are gonna shred."
I realize the planform makes a big difference because of flutter.
Just curious because I been simulating some of my paper and balsa 24mm
MMT rockets using the newly cert'd CTI 24mm loads. The F240VM gets
into the 800ft/sec range! (For comparison an D15 is 230 and an E28 is
about 450 ft/sec)
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Jeff Gortatowsky, Redondo Beach, CA | Twitter: JeffGortatowsky |
Yahoo: indanapt
Facebook: http://www.facebook.com/jeffgortatowsky
"(Scientific) Skepticism is not a set of beliefs, it is a set of
methods for asking questions about reality." -- Doctor Steven Novella
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