[SS2S-Main] Re: Interesting Motor-Design Documents

  • From: "Lampe, Mattias SLC CT PEK" <mattias.lampe@xxxxxxxxxxx>
  • To: "sugarshot@xxxxxxxxxxxxx" <sugarshot@xxxxxxxxxxxxx>
  • Date: Sat, 18 Jan 2014 10:37:27 +0800

If you want to go even cheaper, load cells can be scavenged from cheap digital 
kitchen/bathroom scales. It's not too difficult to hook them up to a computer. 
I can probably help with the electronics, but not so much with the mechanical 

What would be the maximum force to be measured?


From: sugarshot-bounce@xxxxxxxxxxxxx [mailto:sugarshot-bounce@xxxxxxxxxxxxx] On 
Behalf Of vicente Alvero Zambrano
Sent: Friday, January 17, 2014 12:47 AM
To: sugarshot@xxxxxxxxxxxxx
Subject: [SS2S-Main] Re: Interesting Motor-Design Documents

Instruments would be a gauge and load cell, right? but this must be commercial. 
some sets is "cheap". with relative to a support, I think we would have 
problems. that would be cheap.

maybe we can also use the pressure gauge and load cell minisshot rocket.


Date: Thu, 16 Jan 2014 10:30:00 -0600
Subject: [SS2S-Main] Re: Interesting Motor-Design Documents
From: richard.nakka@xxxxxxxxx<mailto:richard.nakka@xxxxxxxxx>
To: sugarshot@xxxxxxxxxxxxx<mailto:sugarshot@xxxxxxxxxxxxx>

To design/build the instruments to measure motor thrust and chamber pressure. 
We would have to do this on a "tight" budget.


On Thu, Jan 16, 2014 at 10:18 AM, vicente Alvero Zambrano 
<vicente_alvero_14@xxxxxxxxxxx<mailto:vicente_alvero_14@xxxxxxxxxxx>> wrote:

What kind of help with the instrumentation?


From: vicente_alvero_14@xxxxxxxxxxx<mailto:vicente_alvero_14@xxxxxxxxxxx>
To: rickmaschek@xxxxxxxxxxxxxx<mailto:rickmaschek@xxxxxxxxxxxxxx>
Subject: RE: [SS2S-Main] Re: Interesting Motor-Design Documents
Date: Thu, 16 Jan 2014 17:17:40 +0100

What kind of help with the instrumentation?


Date: Thu, 16 Jan 2014 08:15:04 -0800
From: rickmaschek@xxxxxxxxxxxxxx<mailto:rickmaschek@xxxxxxxxxxxxxx>
Subject: Re: [SS2S-Main] Re: Interesting Motor-Design Documents
To: vicente_alvero_14@xxxxxxxxxxx<mailto:vicente_alvero_14@xxxxxxxxxxx>

I already am building one for another sugar project, was going to suggest it 
for SS2S if it works.


From: vicente Alvero Zambrano 
To: "sugarshot@xxxxxxxxxxxxx<mailto:sugarshot@xxxxxxxxxxxxx>" 
Sent: Thursday, January 16, 2014 8:10 AM
Subject: [SS2S-Main] Re: Interesting Motor-Design Documents

that would be great, why not try.?

> Date: Thu, 16 Jan 2014 09:54:39 -0600
> Subject: [SS2S-Main] Re: Interesting Motor-Design Documents
> From: richard.rocketry@xxxxxxxxx<mailto:richard.rocketry@xxxxxxxxx>
> To: sugarshot@xxxxxxxxxxxxx<mailto:sugarshot@xxxxxxxxxxxxx>
> Interesting suggestion, Jeff. I am not aware of any sugar motor that
> has ever used an aerospike nozzle.
> As Bill pointed out, the fact that a large percentage of the exhaust
> is condensed phase (44%, to be exact), may result in reduced
> performance compared to a regular nozzle. But might be worth
> investigating. Perhaps some testing can be done with the new
> experimental VIC-2 motor...which is intended for "miscellaneous" type
> experimentation.
> Richard
> On Wed, Jan 15, 2014 at 8:10 PM, Jeff Moore 
> <tnetcenter@xxxxxxxxx<mailto:tnetcenter@xxxxxxxxx>> wrote:
> >
> > I'm wondering if any consideration has been given to the use of aerospike
> > nozzles in our endeavors? Seems to me that there is a significant
> > performance bump using this nozzle design as well as a significant reduction
> > of base drag. I doubt if anyone has used an aerospike nozzle on a sugar
> > motor either - we'd be breaking new ground!
> >
> > Might be worthwhile to take a closer look at!
> >
> > Jeff Moore
> > Bend, Oregon
> >
> > On Wed, Jan 15, 2014 at 3:24 AM, 
> > <monsieurboo@xxxxxxx<mailto:monsieurboo@xxxxxxx>> wrote:
> >>
> >> After reading that superb report of the latest static test, it seemed
> >> appropriate to cross-post this link that just showed up on the arocket 
> >> list.
> >> Great single-page source for some document downloads on issues that are
> >> quite topical for our current phase of development and testing.
> >>
> >> http://www.rasaero.com/dl_solid_motor.htm
> >>
> >> My intent in posting this is not in the least to be critical. Au
> >> contraire, I have nothing but kudos for our testing program and team. This
> >> is just some very interesting reading that's worth saving in a MOTOR_DESIGN
> >> folder somewhere in a hard disk archive.
> >>
> >> "Departures from Ideal Performance", for example, seems relevant to our
> >> quest of trying to maximize the performance of our <cough> inherently
> >> mediocre fuel <cough, cough, grin>
> >>
> >> Enjoy!
> >> Mark L.
> >> DC
> >>
> >

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