[AR] Re: Super Loki Dart design documents
- From: "Monroe L. King Jr." <monroe@xxxxxxxxxxxxxxxxxx>
- To: arocket@xxxxxxxxxxxxx
- Date: Sat, 30 Aug 2014 19:39:00 -0700
Yes that's true Ken. I'm interested in any hard historical data about
the launch or photo's history of the Van Allen experiment.
The only thing we will do different is the avionics and experiment
package.
Monroe
> -------- Original Message --------
> Subject: [AR] Re: Super Loki Dart design documents
> From: KEN BIBA <kenbiba@xxxxxx>
> Date: Sat, August 30, 2014 2:51 pm
> To: arocket@xxxxxxxxxxxxx
>
>
> And I think van Allen used the Loki motor ... but as a single stage rather
> than as a boosted dart .. on the rockoon flight.
>
> Good pic here ... http://en.wikipedia.org/wiki/Rockoon
>
> K
>
> On Aug 30, 2014, at 2:19 PM, Peter Fairbrother <zenadsl6186@xxxxxxxxx> wrote:
>
> > On 30/08/14 22:08, Peter Fairbrother wrote:
> >> On 30/08/14 15:52, Monroe L. King Jr. wrote:
> >>> Bill
> >>> Thanks for the feed back. I had already asked one manufacture about a
> >>> comparable COTS motor for a Loki and the answer I received was a 5"
> >>> motor. That throws everything off and cost a good deal more.
> >>>
> >>> Besides that I had also mentioned to this manufacture we wanted to
> >>> recreate the Van Allen experiment on the 60th anniversary next July with
> >>> a balloon launched Loki. (what's really funny is now these papers show
> >>> up a week or so after I asked the same guy if he had any hard info on
> >>> the Loki)
> >>>
> >>> Being I already have the balloon- I'm more interested in the standard
> >>> 3" Loki Dart from an expense point of view. If I could just find some
> >>> COTS propellant that burns that fast.
> >
> >
> > Sorry, I missed the balloon part - why do you want a super loki dart type
> > for a balloon launch?
> >
> > The point of the dart configuration is to minimise atmospheric drag near
> > the ground, but you won't be flying there ...
> >
> >
> > -- Peter Fairbrother
> >
> >>>
> >>> So I guess I need to calculate the burn rate and see what COTS has to
> >>> offer in that ball park. Who has the fastest COTS propellant? Has anyone
> >>> got any hard data on that? I'm sure someone out there in Arocket land
> >>> already know who's got the hottest propellant.
> >>
> >> The Cesaroni pro-75 (3") 6G reload sounds about right here - the white
> >> thunder propellant type, with 1.8 seconds burn time, should hot enough.
> >>
> >> The standard case will be too heavy though, and you will probably have
> >> to build your own case/body (though there are some alternative
> >> manufacturer cases already available).
> >>
> >>
> >> For further kicks you could put a pro24 or pro29 in the dart, with a
> >> long timer and perhaps a slower burning propellant. Sim it and see.
> >>
> >>
> >> The helical launcher is good if you need fairly close recovery (that's
> >> what it was designed for), but if you have a very large launch site it
> >> shouldn't be needed.
> >>
> >>
> >>
> >> -- Peter Fairbrother
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