[AR] Re: Spartan: Hovering hybrid
- From: Jonathan Goff <jongoff@xxxxxxxxx>
- To: arocket@xxxxxxxxxxxxx
- Date: Thu, 16 Oct 2014 09:32:41 -0600
Bill,
Good call. I still think Paul Breed, Bob Steinke, Scott Zeeb (and Kevin
Sagis though he's more quiet about it) have demonstrated pretty
convincingly that hovering liquid-propellant rockets are within the
capabilities of talented and reasonably well-funded amateurs...
~Jon
On Thu, Oct 16, 2014 at 8:49 AM, Bill Claybaugh <wclaybaugh2@xxxxxxxxxx>
wrote:
> Jon:
>
> I believe this is the reason this list is called "amateur"....
>
> Bill
>
> Sent from my iPhone
>
> On Oct 16, 2014, at 10:17, Jonathan Goff <jongoff@xxxxxxxxx> wrote:
>
> ...Because once you've done all the work to figure out how to do fire and
> throttle valves, building another set with slightly different
> characteristics is just too hard. Much easier to deal with a chamber that
> changes geometry throughout the burn, and where you have no real control
> over mixing efficiency.
>
> I mean, cool if they can pull it off, but I've got to scratch my head on
> why they'd do it that way. There *are* places where hybrids might make
> sense, but I have a hard time believing a hovering vehicle is one of them.
> Unless bobbing around like crazy in a semi-controlled fashion is good
> enough.
>
> Sorry if that came off overly negative, I just wonder about people's
> design choices sometimes.
>
> ~Jon
>
> On Thu, Oct 16, 2014 at 8:12 AM, Mark C Spiegl <mark.spiegl@xxxxxxxxx>
> wrote:
>
>> I have no connection with these guys.
>>
>> They're building an LLC type vehicle using hybrid rocket motors instead
>> of biprop.
>>
>> http://www.spartanproject.eu
>>
>> --MCS
>>
>> .
>>
>>
>>
>>
>>
>
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