[AR] Re: Super Loki Dart design documents
- From: Bill Claybaugh <wclaybaugh2@xxxxxxxxxx>
- To: "arocket@xxxxxxxxxxxxx" <arocket@xxxxxxxxxxxxx>
- Date: Sat, 30 Aug 2014 09:50:32 -0400
Monroe:
See below:
Sent from my iPhone
On Aug 30, 2014, at 3:03, "Monroe L. King Jr." <monroe@xxxxxxxxxxxxxxxxxx>
wrote:
> Question:
>
> Why did not anyone use this method to win the CATS Prize?
The RRS "50 mile" dart flew in '96 and appears to have been part of the
inspiration for the CATS Prize, so everyone certainly knew about the technique.
I cannot say why others did not use a dart, but the RRS team mostly did not see
the point: the prize wasn't enough to cover the cost of developing a new rocket
bearing in mind that the dart had to carry instruments that--twenty years
ago--were too big to fit in less than a 4" diameter dart.
That diameter drove the optimal dart mass toward 70+ pounds and thus to a very
high thrust and short burn booster.
Today's much smaller electronics might make the dart smaller and thus lighter;
carrying GPS is also practical now in a way it was not in the late '90's.
>
> Second: Is it not possible to use COTS grain segments of this same
> diameter and get similar results?
In principle, yes, one could use a commercial motor. I'm not certain there
exist one with the kind of sudden impulse that is required; also remember that
the launch tube was an important part of the Loki's performance: it was a very
highly optimized system.
Bill
>
> Is there that much difference in the propellant used in the Loki?
>
> Monroe
>
>> -------- Original Message --------
>> Subject: [AR] Super Loki Dart design documents
>> From: "Mark C Spiegl" <mark.spiegl@xxxxxxxxx>
>> Date: Fri, August 29, 2014 1:48 pm
>> To: <arocket@xxxxxxxxxxxxx>
>>
>>
>> I don't own the site. I was just surfing. The following two documents
>> describe the Super Loki Dart in decent detail. It's interesting reading...
>>
>>
>> http://www.rrs.org/wp-content/uploads/2014/01/Super-Loki-Dart-Meteorological
>> -Rocket-System-1968.pdf
>>
>> http://www.rrs.org/wp-content/uploads/2014/01/Design-Development-and-Flight-
>> Test-of-the-Super-Loki-Stable-Booster-Rocket-System-1973.pdf
>>
>> -->MCS
>
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