Search found 2008 matches

by SpaceManMat
Mon Apr 23, 2018 8:44 pm
Forum: Scratch Built
Topic: L3 Cert - 1/2 scale Patriot
Replies: 314
Views: 43939

Re: L3 Cert - 1/2 scale Patriot

Very nice, love the way the cloud spreads out on the ground as the motor comes up to pressure. 8)
by SpaceManMat
Mon Apr 23, 2018 10:13 am
Forum: Scratch Built
Topic: L3 Cert - 1/2 scale Patriot
Replies: 314
Views: 43939

Re: L3 Cert - 1/2 scale Patriot

Great shot, would love to see video from that angle.
by SpaceManMat
Mon Apr 23, 2018 10:09 am
Forum: Support & Recovery & Misc.
Topic: Two stage (InterStage) Design?
Replies: 3
Views: 231

Re: Two stage (InterStage) Design?

I’ve not built HPR 2 stage, but the usual method is to have an adapter (usually aluminium) at the end of the booster that the end of the sustainer slides into. The case you use of course cannot have a flange on it. Separation is usually done in 3 ways. 1. Fire in the hold - just light the booster mo...
by SpaceManMat
Sun Apr 22, 2018 1:31 pm
Forum: Queensland Rocketry Society
Topic: QRS Westmar Weekend Dates
Replies: 14
Views: 814

Re: QRS Westmar Weekend Dates

Currently having lunch in Dalby, was a great weekend away.
by SpaceManMat
Sat Apr 14, 2018 11:53 pm
Forum: Mid/High Powered Rocketry
Topic: Nike Apache Half-Scale Project
Replies: 83
Views: 12031

Re: Nike Apache Half-Scale Project

Looks really nice. Have you thought about using the main sled as a circuit board to connect everything? IE to wire it all up you would simply plug in the batteries, switches and anything else to the sled. The ematches can be conennect via terminals soldered to the sled and of course the header for t...
by SpaceManMat
Tue Apr 10, 2018 8:06 pm
Forum: Support & Recovery & Misc.
Topic: EJECTION CHARGE!!??
Replies: 9
Views: 353

Re: EJECTION CHARGE!!??

What motor have you already flown it on? I would think 2.5g is plenty of capacity.
by SpaceManMat
Tue Apr 10, 2018 9:18 am
Forum: Support & Recovery & Misc.
Topic: EJECTION CHARGE!!??
Replies: 9
Views: 353

Re: EJECTION CHARGE!!??

If you’re using the same size charge then provided you pack it well then you should get the same bang. I do recommend you use a decent length charge well and stuff tight with dog barf. It is important with black powder that the charge be contained as long as possible as it explodes.
by SpaceManMat
Mon Apr 09, 2018 4:43 pm
Forum: Support & Recovery & Misc.
Topic: EJECTION CHARGE!!??
Replies: 9
Views: 353

Re: EJECTION CHARGE!!??

You might be able to join a shooting club to get access to black powder. Possibly a better option for you would be to look at using servos or other non pyro means like co2. George (air.command) does some pretty serious water rockets all with servo eject. Do a search here or check out his web page ht...
by SpaceManMat
Fri Mar 23, 2018 8:46 pm
Forum: Rocketry Control Room
Topic: Video preparing the Saturn for flight.
Replies: 3
Views: 509

Re: Video preparing the Saturn for flight.

More great Saturn footage. We’ve all seen the video from the second stage during staging. This is the full uncut footage from both cameras including them being ejected.

https://www.youtube.com/watch?v=iJIY4n5 ... ture=share
by SpaceManMat
Wed Mar 21, 2018 5:41 pm
Forum: Scratch Built
Topic: Something small and fast
Replies: 20
Views: 489

Re: Something small and fast

It’s a 38mm md so will fly on a full I216, projected altitude is 14k but would a bit lower if I can’t keep those fins on. SWEET! If I'm being honest I expect to be closer to 12k', not 10k'. I’ll be stoked if I can beat 11k and set a new PB. Anything over that is a bonus, but you’ve got aim high if ...
by SpaceManMat
Wed Mar 21, 2018 9:28 am
Forum: Scratch Built
Topic: Complete Newbie - Clusters and Clamps and Control (Oh No!)
Replies: 16
Views: 389

Re: Complete Newbie - Clusters and Clamps and Control (Oh No!)

As OTT says we would not use the word guidance this would indicate the rocket is designed to head to a particular location. If you do this then you’ve crossed a line and are building something that may be considered a weapon and that’s a criminal offence and you’ll get yourself into a world of troub...
by SpaceManMat
Tue Mar 20, 2018 5:13 pm
Forum: Scratch Built
Topic: Something small and fast
Replies: 20
Views: 489

Re: Something small and fast

Yeah looked at them before but have heard reports of issues keeping the chute wrapped. Would be nice is Blake stoked them :wink: I'd prefer if he made his own. From my understanding the product I use appeared on the market within weeks of Charles Ogino (Carolina Composite Rocketry) answering a larg...
by SpaceManMat
Tue Mar 20, 2018 9:40 am
Forum: Queensland Rocketry Society
Topic: 18th March 2018 Launch "Flames Smoke & Noise Spectacular"
Replies: 37
Views: 1038

Re: 18th March 2018 Launch "Flames Smoke & Noise Spectacular"

Thank you QRS for an excellent day. Ours was the proud sacrificial powerline trophy, so none of yours had to be :) I think I might have the bug, and given that our only rocket is now the proud temporary property of Energex, it might be time to go shopping. Please expect lots of dumb newbie question...
by SpaceManMat
Tue Mar 20, 2018 9:34 am
Forum: Queensland Rocketry Society
Topic: 18th March 2018 Launch "Flames Smoke & Noise Spectacular"
Replies: 37
Views: 1038

Re: 18th March 2018 Launch "Flames Smoke & Noise Spectacular"

Thanks everyone that came and contributed, was a really great day with lots of visitors. Congrats Aiden and Joe very nicely done certification flights. Unfortunately my phone stopped taking motile shots for some reason so I only have a single picture of an inflight rocket, hopefully some of you did ...
by SpaceManMat
Mon Mar 19, 2018 5:17 pm
Forum: Scratch Built
Topic: Something small and fast
Replies: 20
Views: 489

Re: Something small and fast

Yeah looked at them before but have heard reports of issues keeping the chute wrapped. Would be nice is Blake stoked them :wink: Just found out westmar is in April, might get some competition sooner than you think. The I’ve got a little bird that’s been waiting for over a year to fly, work and weath...

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