[AR] Re: Sugar Rocket State of the Art?
- From: Bill Claybaugh <wclaybaugh2@xxxxxxxxxx>
- To: "arocket@xxxxxxxxxxxxx" <arocket@xxxxxxxxxxxxx>
- Date: Mon, 13 Oct 2014 21:14:31 -0400
You are doing remarkable work, Ben, albeit devoted to arguably relatively
unusual studies.
I gather you are in Denver, if that is correct, I'd be glad to buy dinner
sometime in the next few weeks.
Bill
Sent from my iPhone
On Oct 13, 2014, at 20:53, Ben Brockert <wikkit@xxxxxxxxx> wrote:
> A decade ago Richard Nakka found that brown iron oxide had unexpected
> burn rate enhancement properties in KNSB:
> http://www.nakka-rocketry.net/oxidex.html
> As of earlier this year no one had followed up with more data:
> //www.freelists.org/post/sugpro/brown-iron-oxide-burn-rate-enhancer,2
>
> The old Sugpro went down and a new one was put up, but there has been
> no traffic in recent months: //www.freelists.org/list/sugpro
>
> Rick Maschek has taken over leadership of Sugar Shot to Space from
> Richard Nakka. He's now planning a two stage rocket rather than two
> burn, which gets rid of one of the most consistently unsolved issues
> of that program.
>
> I did a number of FEA tests on sugar propellants using material
> properties experimentally found by Nakka and showed that you can't
> make really large case bonded sugar rockets with aluminum cases
> because the case stretches more than the propellant and it cracks. At
> some point I need to re-run that with a high modulus case design like
> carbon overwrapped stainless.
>
> original results:
> http://sugarshotsolidworks.wordpress.com/2012/05/15/casebonded-grain-stresses/
> narrative: http://sugarshotsolidworks.wordpress.com/2012/05/16/49/
> more posts on random SS2S topics, mostly not sugar propellant:
> http://sugarshotsolidworks.wordpress.com/
>
> Ben
>
>
> On Mon, Oct 13, 2014 at 9:33 AM, Ray Rocket <dmarc-noreply@xxxxxxxxxxxxx>
> wrote:
>> Hey all,
>>
>> I took some time off post 9/11 and am just starting to dip my toes back into
>> rocketry.
>> When I last made motors, I was exploring sugar.
>> Have there been any significant advances in the field during my hiatus?
>>
>> What is the current state of art with sugar?
>> Largest diameter sugar motor?
>> Highest total impulse?
>> Does anybody know the current sugar altitude record?
>> Have there been any interesting/notable advances in the art?
>>
>>
>> Ad Astra,
>>
>> Ray
>
Other related posts:
