[roc-chat] Re: Pesky Pin Holes
- From: Steve Battaglia <stevebotag@xxxxxxxxxxxxxx>
- To: "roc-chat@xxxxxxxxxxxxx" <roc-chat@xxxxxxxxxxxxx>
- Date: Wed, 30 Nov 2011 18:31:36 -0800
David, Richard..... Thanks....
I'll check out the website.....
S. Battaglia
310-339-2717
Sent from my Rotary iPhone...
On Nov 30, 2011, at 6:24 PM, Richard Dierking <redierking@xxxxxxxxxxx> wrote:
> I suggest www.thrustcurve.org
>
> Sent from my iPhone
>
> On Nov 30, 2011, at 6:11 PM, "David Erbas-White" <derbas@xxxxxxxxxxxxxxxx>
> wrote:
>
>> On 11/30/2011 5:54 PM, STEVE BATTAGLIA wrote:
>>
>> (well, it's only off-topic because you didn't start a new thread...)
>>
>> You need to look at the thrust curves. It's not a linear thrust, the total
>> Newtons is integrated over the total burn time, If you look at the typical
>> thrust curve, there is an initial peak for 10-20% of the burn time, followed
>> by a lower-level sustaining thrust, with various degrees of fall-off. You
>> really have to look at the thrust curves to understand it all - look at the
>> NAR website, or manufacturer's data, etc.
>>
>> David Erbas-White
>>
>>
>>> a bit off topic....but......
>>>
>>> Can someone check my work here.... I pulled most of the conversions from
>>> the web..... might have been using some bum math....
>>>
>>> 1st Stage = 5500 lbf which = 24,475 N 7.48 sec burn
>>> which equals 183,073 Ns
>>> 2nd Stage = 2100 lbf which = 9,345 N 13.43 sec burn which equals 125,503
>>> Ns
>>> total 308,576 Ns
>>>
>>> Hmmmmmm.....
>>>
>>> thanks...
>>>
>>>
>>> steve
>>>
>>>
>>>
>>>
>>> On Nov 30, 2011, at 12:49 PM, Wedge Oldham wrote:
>>>
>>>> Yes, absolutely!
>>>> Wedge
>>>>
>>>>
>>>>
>>>> On Wed, Nov 30, 2011 at 8:15 AM, Allen Coleman <allencoleman46@xxxxxxxxx>
>>>> wrote:
>>>> Can Metal Glaze by Evercoat be used to fill spirals in blue tube and other
>>>> body tubes?
>>>>
>>>> Allen Coleman
>>>>
>>>>
>>>>
>>>> On Tue, Nov 29, 2011 at 6:28 PM, Wedge Oldham <wedgeoldham@xxxxxxxxx>
>>>> wrote:
>>>> Metal Glaze by Evercoat. Spreads as easy as mayo; sands as easy as
>>>> chalk. Hardens in 20 minutes which is normally a good thing. Sticks to
>>>> everything but the break of day.
>>>>
>>>> On Nov 29, 2011 1:27 PM, "Troy Monroe Stacey" <tstacey001@xxxxxxxxxxxx>
>>>> wrote:
>>>> Bondo. There's a finishing Bondo that we used on Itsy Bitsy and I don't
>>>> remember exactly what it was called, but it set up quick and sanded great
>>>> and was awesome. Anyone from Team Tarantula still around
>>>> know what I'm talking about?
>>>>
>>>> Sent from my iPhone
>>>>
>>>> On Nov 29, 2011, at 1:18 PM, Gregory Lyzenga <lyzenga@xxxxxxxxx> wrote:
>>>>
>>>>>
>>>>> On Nov 29, 2011, at 12:48 PM, Scott Christiansen wrote:
>>>>>
>>>>>> Anyone have an easy way to fill pin holes in fiberglass? The less
>>>>>> sanding the better.
>>>>>>
>>>>>> Scott
>>>>>
>>>>> If the holes aren't too big, I've
>>>>> found that wall spackle from the home improvement store works well and
>>>>> sands with almost no effort.
>>>>>
>>>>> - Greg
>>>>
>>>>
>>>
>>
>
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