Full Scale Patriot PAC-1 Missile

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CATO
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Re: Full Scale Patriot PAC-1 Missile

Postby CATO » Tue Dec 06, 2016 6:36 pm

Internal motor stack change system mandrel completed. Same manufacturing process as per the airframe but with a 14" dia.

Next to roll a few tubes (3 or 4). Quickly running out of space in the garage...
IMG_1123.JPG
IMG_1123.JPG (112.94 KiB) Viewed 1160 times
"In thrust we trust"

AMRS 21 L3

Impulse:
2017: 5,973 Ns (13.14% M)
Ns 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: Full Scale Patriot PAC-1 Missile

Postby SpaceManMat » Tue Dec 06, 2016 8:58 pm

More tubes!

Extra points if you can source a 14 inch motor to go in it.
QRS: 124
AMRS: 32 L2 RSO
Highest Altitude: 10,849 feet
Largest Motor: CTI 1115J530 IM
Current Project: X Wing

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Re: Full Scale Patriot PAC-1 Missile

Postby cryoscum » Tue Dec 06, 2016 9:52 pm

Looking good Dave! I reckon the mandrel's internal structure is as good as you could possibly want! Please keep us posted.
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: Full Scale Patriot PAC-1 Missile

Postby Jordz » Thu Dec 08, 2016 6:17 pm

Outta curiousity, what do you put the maximum payload at for this beast?

On a completely unrelated note, i weigh 70ish kilos with a parachute on and have a healthy love for adrenalin rushes.

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Re: Full Scale Patriot PAC-1 Missile

Postby OverTheTop » Thu Dec 08, 2016 7:14 pm

On a completely unrelated note, i weigh 70ish kilos with a parachute on and have a healthy love for adrenalin rushes.


You do realise his user name is "CATO", don't you? :D
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Re: Full Scale Patriot PAC-1 Missile

Postby zxrmjh » Wed Jan 25, 2017 6:49 pm

Great work Cato, can't wait to see this baby fly
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Re: Full Scale Patriot PAC-1 Missile

Postby CATO » Thu Jan 26, 2017 5:50 am

zxrmjh wrote:Great work Cato, can't wait to see this baby fly

Thanks Michael.....
"In thrust we trust"

AMRS 21 L3

Impulse:
2017: 5,973 Ns (13.14% M)
Ns 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: Full Scale Patriot PAC-1 Missile

Postby CATO » Sun Feb 12, 2017 9:55 am

Hello all,

At this point in time of the build I had panned to have been a little more progressed than I currently am, but I guess it is what it is.

Today I have completed the Fin Cores as per the Cryoscum's Raptor build method (all be it not as complex) http://forum.ausrocketry.com/viewtopic.php?f=10&t=4392&sid=96f977b6adc9a098f88cea61ee7df1f9&start=74, the fins cores are 10mm thick CoreCell 80 (perforated) with radiata 10mm pine beveling, the bevels are 40mm wide (straight 90 deg nothing fancy here) and were J B Weld'ed to the CoreCell as that is what I had at hand (with 47 deg heat the J B Weld had a low viscosity). They appear to have turned out better then I had hoped given my limited knowledge working with Corecell, The cores weigh in between 260 ~ 270 grams each. Next stage will be the carbon layup, once again the same process as per the Raptor built, 2 layers of 411GSM bi-axial and a final layer of 200GSM plain weave per face.

As the layup will not fit into my standard method of vacuum bagging (Sunbeam Vacuum Foodsaver), I will need to invest in a larger vacuum layup system...

Fin_Cores.JPG
Fin_Cores.JPG (133.82 KiB) Viewed 971 times
"In thrust we trust"

AMRS 21 L3

Impulse:
2017: 5,973 Ns (13.14% M)
Ns 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: Full Scale Patriot PAC-1 Missile

Postby CATO » Sun Feb 19, 2017 10:45 am

So whilst I'm waiting for my vacuum compressor/pump to arrive to finish off the fin layups, I thought I'd progress (start) the 360mm Motor Stack Quick Change System. The "External Tube" (the one that the fins are going to attach to) has been rolled (3 raps of 295gsm - 1.2mm thick), only 3 more "Internal" tubes to roll (yay), 1 for 7 x 98mm MMT's, 1 for 4 x 153mm MMT's and 1 spare.....

Slowly goes it...

Thanks Amber...
360mm_mmt_External.jpg
360mm_mmt_External.jpg (41.72 KiB) Viewed 940 times
"In thrust we trust"

AMRS 21 L3

Impulse:
2017: 5,973 Ns (13.14% M)
Ns 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: Full Scale Patriot PAC-1 Missile

Postby SpaceManMat » Sun Feb 19, 2017 2:46 pm

How fast you figuring that Quick Change System will be?

Will it work something like a fixed CR with blind nuts plus a removable one attached to the tube? Or are you going to make a huge retainer of sorts?
QRS: 124
AMRS: 32 L2 RSO
Highest Altitude: 10,849 feet
Largest Motor: CTI 1115J530 IM
Current Project: X Wing

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CATO
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Re: Full Scale Patriot PAC-1 Missile

Postby CATO » Sun Feb 19, 2017 4:41 pm

SpaceManMat wrote:How fast you figuring that Quick Change System will be?

Will it work something like a fixed CR with blind nuts plus a removable one attached to the tube? Or are you going to make a huge retainer of sorts?

Good question, as quick as it takes to undo 6 nuts and swap out the motor stack (5~15 mins), so I'm guessing the answer is dependent on the individual.

I think the correct answer is both, there will be a means to support the motor stack(s) from travelling forward and aft, the main support will be an aft thrust plate that will transfer thrust directly into the air-frame, this will lap over the side of the air-frame (the air-frame will fit into the aft thrust plate), and to a lesser extent a forward retention system.

So looking for a good (cheap) machinist :roll:
"In thrust we trust"

AMRS 21 L3

Impulse:
2017: 5,973 Ns (13.14% M)
Ns 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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CATO
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Re: Full Scale Patriot PAC-1 Missile

Postby CATO » Mon Feb 20, 2017 2:43 pm

CATO wrote:So whilst I'm waiting for my vacuum compressor/pump to arrive to finish off the fin layups...

OK, I have secured a Vacuum Pump (Never Used - eBay, I love eBay), now for the auxiliary attachments (let's hope the pump works....)

The Pump is a Becker VT 4.10 (RRP A$2,599), I should be able to obtain a vacuum of 150mbar (15 kpa), I plan to utilise it for Vacuum Bagging of layups, some Air-Conditioning vacuum tests (the wife wants A/C installed, or else), and to simulate a launch altitude of @ 44,000' (13.5km) for a 2 stage rocket that I'm currently planning.

Onwards and Upwards :)

VP_1.JPG
VP_1.JPG (148.64 KiB) Viewed 917 times

VP_2.JPG
VP_2.JPG (87.43 KiB) Viewed 917 times

VP_3.JPG
VP_3.JPG (110.65 KiB) Viewed 917 times
"In thrust we trust"

AMRS 21 L3

Impulse:
2017: 5,973 Ns (13.14% M)
Ns 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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SpaceManMat
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Re: Full Scale Patriot PAC-1 Missile

Postby SpaceManMat » Mon Feb 20, 2017 5:04 pm

CATO wrote:some Air-Conditioning vacuum tests (the wife wants A/C installed, or else)


So... Your wife's going to ride in the rocket :?: :lol: Guess it can get pretty hot out there on the pad :wink:

Sorry couldn't help myself. That is one serious vacuum pump.
QRS: 124
AMRS: 32 L2 RSO
Highest Altitude: 10,849 feet
Largest Motor: CTI 1115J530 IM
Current Project: X Wing

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jase
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Re: Full Scale Patriot PAC-1 Missile

Postby jase » Wed Feb 22, 2017 8:09 pm

Very nice David 8)
Me and my rockets run on Moonshine.

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CATO
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Re: Full Scale Patriot PAC-1 Missile

Postby CATO » Sat Mar 11, 2017 12:26 pm

Had a few free minutes today, managed to connected the vacuum pump up to 240 Volts and she works like a charm, nice given I paid less than 30% RRP for it.... :-)
"In thrust we trust"

AMRS 21 L3

Impulse:
2017: 5,973 Ns (13.14% M)
Ns 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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