New 152/35000 hardware by Gorilla/SCR

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cryoscum
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New 152/35000 hardware by Gorilla/SCR

Postby cryoscum » Sun Jun 29, 2014 12:16 pm

Hi All

I recently had several questions regarding the new 6" motors a few of us have recently acquired and I thought I would do a quick post with some photos and info.

Firstly, and I think the most exciting part, is that these motor reloads were developed by Gorilla specifically to ensure they can be shipped under UN1.4 regs, and in no small part due to the discussions between Australian Rocketry Pty Ltd and Gorilla. This I know first hand, as I was present when Blake and Jim came up with the idea, over drinks in the middle of a desert on the far side of the planet about 2 years ago. It is because of this that they are actually SCR-branded prior to import into Australia. They are also, before those we want to detract from this say anything, fully and completely authorised and legal to own and use in Australia, as long as you conform to your state explosive regulations, i.e. you must have an explosive license issued by your state of residence and a suitable HPR cert - exactly the same requirements as for any other L3 composite motor with a UN1.4 classification. For specifics on this please check with your state regulator.

Blake flew an O5925 in one of these cases last weekend at Westmar and at approx 63% O, it is an absolutely killer! We are NOT in Kansas anymore, Toto! The rocket build requirements to fly these is something in a different league and I will be doing my homework very carefully before going for it! The idea of doing one of these as a minumum diameter scares me silly :shock:

Three reloads are available for it currently, i.e. an O2645 Black Lightning, O5925 Blue Typhoon and an O4925 White Cloud long burn. The sparky we saw flying at Balls last year taking Blake's Drama Queen to approx 12k' from memory, but it woke up half of northern Nevada!

Here it is next to a CTI Pro-98GXL case (same case the O3400 and N5800 reloads use), for scale.
a.JPG


The aft end with the very simple and elegant closure and thrust rings radially grub-screwed.
b.JPG
b.JPG (22.44 KiB) Viewed 3489 times


The graphite nozzle is a whopper!
c.JPG
c.JPG (13.5 KiB) Viewed 3489 times


The forward closure has multiple attachment points (good as your rocket is likely to be big!). These reloads do not use a smoke grain at all, so the closure is just flat.
d.JPG
d.JPG (17.22 KiB) Viewed 3489 times


I like the simplicity of it, as I can just see complicated assemblies becoming a problem if you need to do it in the dust and wind 'out there'. When it comes to these larger motors KISS rules!

As mentioned, there are a few of these hardware sets and reloads already in the hands of avid enthusiasts and with the reloads costing only marginally more than your average Aerotech N-reload, I can just see O-flights becoming more commonplace than we could ever have imagined.

See you out there!
N
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Total impulse for 2015: 84,231 Ns
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Re: New 152/35000 hardware by Gorilla/SCR

Postby matthew » Sun Jun 29, 2014 1:22 pm

It certainly is an impressive case, and the Gorilla/SCR loads we saw at Westmar were fantastic. Being on hand during the assembly of Blake's O was a great experience. They look to be very straightforward in the assembly - glue 3 grains in to each of the grain sleeves, fit the liner, insert the now larger grains and spacers, fit O rings and bolt the closures on.

I forgot to ask onsite - is the nozzle reusable? I assumed it is, but I hate assuming. That's quite the chunk of graphite.
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Re: New 152/35000 hardware by Gorilla/SCR

Postby cryoscum » Sun Jun 29, 2014 2:16 pm

Hi Mat

Yes, just like with all the Gorilla hardware, the nozzle is reusable. Unsure how many times you can reuse them, but it's safe to say "probably more times than you intend to fly a reload of that size" :)
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Total impulse for 2016: 32,458 Ns (thus far)
Total impulse for 2015: 84,231 Ns
Total impulse for 2014: 40,757 Ns
Total impulse for 2013: 62,927 Ns

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Re: New 152/35000 hardware by Gorilla/SCR

Postby october sky » Sun Jun 29, 2014 3:35 pm

Great info there, thanks Nic for that and as I also had a pleasure to be there and see it all...very cool. 8)
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Re: New 152/35000 hardware by Gorilla/SCR

Postby CATO » Sun Jun 29, 2014 5:16 pm

A's, B's, C's and O's :shock: well done SCR.
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2018: 14,767 Ns (44% N)
Ns 17: 5,973; 16: 34,558; 15: 35,955; 14: 6,016; 13: 10,208
PB - Gorilla N2717WC, H: 10,260', S: 1.14M

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Re: New 152/35000 hardware by Gorilla/SCR

Postby Sumo310 » Sun Jun 29, 2014 5:43 pm

I reckon that O sparky has got to be one of my favourite motors, its what led me to fly its baby brother the M1610 last weekend. The roar from the M just can't compare to the O. The fact it wowed a bunch of hard-assed, been-there done-that yanks at BALLS speaks volumes about the motors!

I wonder how much slag the sparky leaves on that nozzle, I've got a nice pile of titanium that was built up on the M nozzle
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Re: New 152/35000 hardware by Gorilla/SCR

Postby str8up » Sun Jun 29, 2014 5:50 pm

I've got a nice pile of titanium that was built up on the M nozzle


So I have to ask the question - How hard is it to clean the nozzles? Surely one cannot be too brutal as they are graphite.

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Re: New 152/35000 hardware by Gorilla/SCR

Postby SpaceManMat » Sun Jun 29, 2014 9:24 pm

cryoscum wrote:As mentioned, there are a few of these hardware sets and reloads already in the hands of avid enthusiasts and with the reloads costing only marginally more than your average Aerotech N-reload, I can just see O-flights becoming more commonplace than we could ever have imagined.

An O for the price of an N, that's brilliant. The Gorilla website says they have over 15/17kg of propellant so we couldn't actually take the reloads home without getting a special storage license. Very impressive.

I know dangerous goods shipping regulations are crazy complicated, but any idea as to how much modification from standard is required to get these reloads to be shipped under 1.4 regs? Perhaps Blake can chime in here or would that be letting trade secrets out of the bag :wink:
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Re: New 152/35000 hardware by Gorilla/SCR

Postby Sumo310 » Sun Jun 29, 2014 9:50 pm

Most of the M nozzle buildup came off pretty easily.

Further shipping info under post 38 and 41 here:
http://www.rocketryforum.com/showthread ... otor/page2
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Re: New 152/35000 hardware by Gorilla/SCR

Postby cryoscum » Sun Jun 29, 2014 10:14 pm

SpaceManMat wrote: The Gorilla website says they have over 15/17kg of propellant so we couldn't actually take the reloads home without getting a special storage license. Very impressive.
I know dangerous goods shipping regulations are crazy complicated, but any idea as to how much modification from standard is required to get these reloads to be shipped under 1.4 regs? Perhaps Blake can chime in here or would that be letting trade secrets out of the bag :wink:


The simple answer is to just have Blake store it for you until you're ready to fly the rocket, if you don't have any special storage licenses. He has always been very helpful in this sense. The fact is that the storage limits for a 'regular' explosive license is pretty generous, so for most of us we'll be able to get by without needing anything special. For these motors, however, speak to your regulator or just leave them in approved hands... Hey, we jump through hoops ALL the time! This one is nothing!

As for the design changes required to allow 1.4 shipping, I'll let others comment on that, but I can confirm that they are shipped as such. Halleluyah brothers! :)
AMRS L3 | NAR L3 | QRS 089 | MDRA 224
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Total impulse for 2016: 32,458 Ns (thus far)
Total impulse for 2015: 84,231 Ns
Total impulse for 2014: 40,757 Ns
Total impulse for 2013: 62,927 Ns

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Re: New 152/35000 hardware by Gorilla/SCR

Postby SpaceManMat » Sun Jun 29, 2014 11:26 pm

Sumo310 wrote:Further shipping info under post 38 and 41 here:
http://www.rocketryforum.com/showthread ... otor/page2


Ok, thanks. Simple answer is chop the 5 grains up into 3 smaller grains (15 in total) and send as 4 separate packages. This gets around the whopping $1000 hazmat fee for an O sized motor that would be paid under 1.3 regs (I think that just US domestic price). There are mini liners that you use to recreate the 5 full size grains. Thanks Jim
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Re: New 152/35000 hardware by Gorilla/SCR

Postby kopius » Mon Jun 30, 2014 9:30 am

The last few years have seen a number of exciting advancements in rocketry and the latest access to these 'O' motors is certainly one of the highlights so far. the team at Australian Rocketry Pty Ltd is continually working very hard with many manufacturers to continually improve the availability to existing products and revolutionize new products that will not only benefit the Australian rocketry community, but international users also. Jim Harris at Gorilla Rocket Motors has been fantastic to work with and it is an absolute pleasure to have been able to consult and help Jim with these latest offerings.

As everyone knows, these have been designed in such a way that they can be shipped as class 1.4 explosives. To get a better understanding of what this means, please check out this page: http://ausrocketry.com.au/rocket-motor-classifications

Without going into too many boring details of what I deal with on every shipment that comes into Australia, there is one key factor to allowing shipments as class 1.4. The UN with the DOT have completed testing which resulted in the following: For motors to be shipped as class 1.4, no motor and/or individually packed grain is permitted to exceed 1.4kg or an overall package of 5.6kg. By cutting down the grains into separate slugs, this has brought each item under the threshold. Because of the instructional methods and nature of the motors, the assembly process for the end user does not deviate away from standard practices and therefore allows anyone (who holds the correct certification/license etc.) to access and use these motors. This also means the transportation is far less hassle and cheaper than transporting classes 1.3 or higher.
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Re: New 152/35000 hardware by Gorilla/SCR

Postby Duck Lucker » Mon Jun 30, 2014 9:08 pm

"International" Yep, I could find a use for one.




kopius wrote:The last few years have seen a number of exciting advancements in rocketry and the latest access to these 'O' motors is certainly one of the highlights so far. the team at Australian Rocketry Pty Ltd is continually working very hard with many manufacturers to continually improve the availability to existing products and revolutionize new products that will not only benefit the Australian rocketry community, but international users also. Jim Harris at Gorilla Rocket Motors has been fantastic to work with and it is an absolute pleasure to have been able to consult and help Jim with these latest offerings.

As everyone knows, these have been designed in such a way that they can be shipped as class 1.4 explosives. To get a better understanding of what this means, please check out this page: http://ausrocketry.com.au/rocket-motor-classifications

Without going into too many boring details of what I deal with on every shipment that comes into Australia, there is one key factor to allowing shipments as class 1.4. The UN with the DOT have completed testing which resulted in the following: For motors to be shipped as class 1.4, no motor and/or individually packed grain is permitted to exceed 1.4kg or an overall package of 5.6kg. By cutting down the grains into separate slugs, this has brought each item under the threshold. Because of the instructional methods and nature of the motors, the assembly process for the end user does not deviate away from standard practices and therefore allows anyone (who holds the correct certification/license etc.) to access and use these motors. This also means the transportation is far less hassle and cheaper than transporting classes 1.3 or higher.

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Re: New 152/35000 hardware by Gorilla/SCR

Postby CATO » Sun Aug 09, 2015 12:06 pm

OK, anyone know were I can obtain a copy of the engine file for the Gorilla/Southern Cross Rocketry "O4925 White Cloud" motor :mrgreen: http://ausrocketry.com.au/motors/reloadable/gorilla-rocket-motors-hpr/gorilla-152mm/o5025wc.html
"In thrust we trust"

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TRA 07459 L3

Impulse:
2018: 14,767 Ns (44% N)
Ns 17: 5,973; 16: 34,558; 15: 35,955; 14: 6,016; 13: 10,208
PB - Gorilla N2717WC, H: 10,260', S: 1.14M

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Re: New 152/35000 hardware by Gorilla/SCR

Postby Cloudbreaker » Sun Aug 09, 2015 6:52 pm

CATO wrote:OK, anyone know were I can obtain a copy of the engine file for the Gorilla/SUse hern Cross Rocketry "O4925 White Cloud" motor :mrgreen: http://ausrocketry.com.au/motors/reloadable/gorilla-rocket-motors-hpr/gorilla-152mm/o5025wc.html

I can't help you... All I know is that the burn time is around $355 per second. AWESOME!!!
I'd love to see that in action.
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