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by air.command
Fri Jun 14, 2019 7:05 pm
Forum: Air Command Water Rockets
Topic: Horizon - 2 Stage Water Rocket
Replies: 20
Views: 25807

Re: Horizon - 2 Stage Water Rocket

strud wrote:How would you heat that tube length?

I would need to build a custom heat box. These tubes are about 2.5m long.
I was just looking back through this forum and found some discussion about post cure: https://forum.ausrocketry.com/viewtopic.php?t=3841&start=45
by air.command
Fri Jun 14, 2019 3:42 pm
Forum: Air Command Water Rockets
Topic: Horizon - 2 Stage Water Rocket
Replies: 20
Views: 25807

Re: Horizon - 2 Stage Water Rocket

Hi George, Maybe to assist with mandrel removal, you can make up some flush or internal caps for the PVC mandrel, put some fittings in them and run a low (say 2 bar?) pressure on the tube during curing (with a vacuum sleeve/heat shrink etc) on the outer. Then after initial cure, drop the pressure f...
by air.command
Thu Jun 13, 2019 10:29 pm
Forum: Air Command Water Rockets
Topic: Horizon - 2 Stage Water Rocket
Replies: 20
Views: 25807

Re: Horizon - 2 Stage Water Rocket

Awesome work George! I really like how the whole family is involved :-) You have given me some ideas for a fincan / rear module of my 4" rocket that will include a boatail. The carbon sock looks like a fantastic way to deal with tapers etc. Which 'weight' sleeving are you using? ie 3,6,12k? A ...
by air.command
Thu Jun 13, 2019 7:50 pm
Forum: Air Command Water Rockets
Topic: Horizon - 2 Stage Water Rocket
Replies: 20
Views: 25807

Re: Horizon - 2 Stage Water Rocket

It's been quite a while since I updated this thread so for completeness, I am including the videos of the next parts of the project including the new one we released today. Part #7 - Details of the plumbing that goes in the air control box. yynT8bLQOTE Part #8 - Making and testing test pressure cham...
by air.command
Mon Jun 03, 2019 5:13 pm
Forum: How's the Weather..?
Topic: LEGO Rocketry
Replies: 11
Views: 1907

Re: LEGO Rocketry

Here is a good review of the Lander kit by Scott Manley:

by air.command
Wed May 29, 2019 10:27 pm
Forum: Australian Model Rocket Society
Topic: New AMRS H Impulse Single Motor Altitude Record
Replies: 7
Views: 282

Re: New AMRS H Impulse Single Motor Altitude Record

Congratulations Steve! That's a great effort. :D
by air.command
Thu May 23, 2019 2:27 pm
Forum: How's the Weather..?
Topic: NASA - Send-your-name-to-mars2020
Replies: 2
Views: 139

Re: NASA - Send-your-name-to-mars2020

Cheer's CATO...+1... I got the window seat. :D
by air.command
Sat May 18, 2019 6:22 pm
Forum: Electronics
Topic: 3d Printed Screw Switch
Replies: 13
Views: 347

Re: 3d Printed Screw Switch

I like it. An elegant and compact solution. :D How well do the inserts hold in the plastic? I'm just thinking what happens say during transportation, is there a chance that vibration could make those come out? Landing impact shouldn't be an issue since the bolt is holding them together. I guess they...
by air.command
Fri May 17, 2019 2:41 pm
Forum: Electronics
Topic: 3d Printed Screw Switch
Replies: 13
Views: 347

Re: 3d Printed Screw Switch

Nice work Derek, those look great. I agree it would be good to be able to mount them at 90 degrees, so that you could easily access them from the outside. Perhaps just moving the mounting tabs to be in line with the top.
by air.command
Sun May 12, 2019 11:03 am
Forum: I could use that
Topic: 3d Printed Nose Cone Camera Mounts
Replies: 8
Views: 411

Re: 3d Printed Nose Cone Camera Mounts

Very interesting design. I look forward to seeing the results you get with it.
by air.command
Fri May 10, 2019 2:22 pm
Forum: Thunda Down Under 2019
Topic: Thunda Down Under 2019 Photo and Video Thread
Replies: 34
Views: 1882

Re: Thunda Down Under 2019 Photo and Video Thread

Thanks for posting that Drew. It's always great to get the commentary from the LCO before launch. Something I don't always get and then you don't know what you are looking at or who the rocket belongs to.
by air.command
Mon May 06, 2019 6:43 pm
Forum: Thunda Down Under 2019
Topic: Thunda Down Under 2019 Photo and Video Thread
Replies: 34
Views: 1882

Re: Thunda Down Under 2019 Photo and Video Thread

Cheers guys, though you all did the hard work of creating the content!
by air.command
Thu May 02, 2019 9:05 am
Forum: Scratch Built
Topic: Full Clip - 54mm MD build
Replies: 21
Views: 2381

Re: Full Clip - 54mm MD build

Very interesting data Drew, thanks for sharing. 61Gs is really moving off the pad. At what altitude would it have gone supersonic?
by air.command
Wed May 01, 2019 9:05 am
Forum: Thunda Down Under 2019
Topic: Thunda Down Under 2019 Photo and Video Thread
Replies: 34
Views: 1882

Re: Thunda Down Under 2019 Photo and Video Thread

Thanks Pete. Here is the Highlights video from Thunda:


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