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

  • From: Richard Nakka <richard.rocketry@xxxxxxxxx>
  • To: sugarshot@xxxxxxxxxxxxx
  • Date: Thu, 16 Jan 2014 09:54:39 -0600

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


On Wed, Jan 15, 2014 at 8:10 PM, Jeff Moore <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> 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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