Search found 473 matches

by Viking
Fri Sep 21, 2018 1:38 pm
Forum: How's the Weather..?
Topic: Not really a rocket
Replies: 1
Views: 94

Re: Not really a rocket

Haha, so cool huh?
When I saw this I immediately thought how cool it would be with an RC turbine!
by Viking
Fri Sep 21, 2018 12:39 pm
Forum: How to's
Topic: Questions: Balsa/Carbon Sandwiches
Replies: 10
Views: 546

Re: Questions: Balsa/Carbon Sandwiches

Yep, epoxy cures faster with heat, curing epoxy creates heat(exothermic reaction) it's vicious circle. I guess the brush bristles are a bit of an insulator trapping heat inside, I wonder how close the epoxy in the brush is to thermal runaway? When I was a grom (teen surfer) I used to surf with a guy...
by Viking
Tue Sep 18, 2018 2:01 pm
Forum: How to's
Topic: Questions: Balsa/Carbon Sandwiches
Replies: 10
Views: 546

Re: Questions: Balsa/Carbon Sandwiches

Good Stuff! ....it was a bit of a scramble because I was afraid the epoxy would go off, but it worked out okay. Don't stress too much with 206. I mix for a min or so and then wet out my cloth as quick as I can just so it's not sitting in the pot cooking itself. I use a foam roller (paint trimming ty...
by Viking
Mon Sep 17, 2018 12:38 pm
Forum: Mid/High Powered Rocketry
Topic: Purple Parrot - MD 38mm
Replies: 99
Views: 8327

Re: Purple Parrot - MD 38mm

Great video Matt. I'm still jealous you can get DashWare to work.
by Viking
Tue Sep 04, 2018 4:50 am
Forum: Rocketry Control Room
Topic: UP CLOSE Delta IV Heavy Launch Pad Tour
Replies: 2
Views: 158

Re: UP CLOSE Delta IV Heavy Launch Pad Tour

.... and after the walk to the pad. (Yeah I posted before I had finished watching it)
This is one of the most interesting things I have seen in a long time.
Frekin' awesome.
by Viking
Tue Sep 04, 2018 4:17 am
Forum: Rocketry Control Room
Topic: UP CLOSE Delta IV Heavy Launch Pad Tour
Replies: 2
Views: 158

UP CLOSE Delta IV Heavy Launch Pad Tour

Very cool, and very very interesting discussion on the walk to the pad.

https://youtube.com/watch?v=x-vXJL8jXBk

by Viking
Wed Aug 29, 2018 3:22 pm
Forum: How to's
Topic: Questions: Balsa/Carbon Sandwiches
Replies: 10
Views: 546

Re: Questions: Balsa/Carbon Sandwiches

...I also saw a vid with a guy making his own using thin 3M double-sided tape, but can't find that vid now.... Found the vid, though it's not exactly as I remember. He's making edge tape with e-glass and cutting it so it's biaxial. I guess it conforms to compound curves better this way, or it's str...
by Viking
Wed Aug 29, 2018 12:25 pm
Forum: How to's
Topic: Questions: Balsa/Carbon Sandwiches
Replies: 10
Views: 546

Re: Questions: Balsa/Carbon Sandwiches

I have bagged some composite fins, using e-glass instead of Carbon though. It is better to wet-out your cloth rather than the balsa. You will get lighter fins this way. I'm not sure If bonding the two faces together is really needed but if you are worried about de-lam, epoxy alone will help a little...
by Viking
Sun Aug 26, 2018 12:16 pm
Forum: Mid/High Powered Rocketry
Topic: Don't Debate This, Too
Replies: 58
Views: 2663

Re: Don't Debate This, Too

Oldboy wrote:Towels ....

Wise words...

da5.jpg
da5.jpg (76.89 KiB) Viewed 317 times


Even the ISS knows how mind-bogglingly important a towel is...

DMhZxJG.jpg
DMhZxJG.jpg (108.05 KiB) Viewed 317 times

1368582_1.jpg
1368582_1.jpg (4.81 KiB) Viewed 317 times
by Viking
Fri Aug 24, 2018 3:41 pm
Forum: News & Events
Topic: Curt von Delius hits 200k' with his Phoenix 4 2 stage stack
Replies: 29
Views: 1310

Re: Curt von Delius hits 200k' with his Phoenix 4 2 stage stack

From what I've been able to find, COCOM "ceased to function" in 1994 and was superseded by the Wassenaar Arrangement. GNSS seems to be covered by the 'DUAL-USE LIST - CATEGORY 7 – NAVIGATION AND AVIONICS' however I can't find anything specific. ITAR apparently had a rule for GNSS : " ...
by Viking
Thu Aug 23, 2018 1:28 pm
Forum: News & Events
Topic: Curt von Delius hits 200k' with his Phoenix 4 2 stage stack
Replies: 29
Views: 1310

Re: Curt von Delius hits 200k' with his Phoenix 4 2 stage stack

...Seems to me we have a growing need to get altitude measurements above 50k. I did see an article about Copenhagen Oribital that they were using unlocked GPS. This could still be done with locked GPS. Using timing GPS modules to synchronize a radio transmitter on board the rocket to receivers on t...
by Viking
Tue Aug 21, 2018 4:06 pm
Forum: News & Events
Topic: Curt von Delius hits 200k' with his Phoenix 4 2 stage stack
Replies: 29
Views: 1310

Re: Curt von Delius hits 200k' with his Phoenix 4 2 stage stack

Do you think that the 50,000m limit is software based (like COCOM limits)? My expectation is that is the case. TBH I don't know whether it's a COCOM, or ITAR or Wassenaar regulation.. or if it's a limitation in ublox's navagation engine. Dunno. Here's the 'Dynamic Platform' options for the Max7. No...
by Viking
Fri Aug 17, 2018 3:07 pm
Forum: News & Events
Topic: Curt von Delius hits 200k' with his Phoenix 4 2 stage stack
Replies: 29
Views: 1310

Re: Curt von Delius hits 200k' with his Phoenix 4 2 stage stack

... My expectation is the BRB was used for verifying apogee... As I mentioned at GV over the weekend, I have my doubts about this as the uBlox datasheet mentions 50km altitude limit. I also found this on the ublox user forum, note the dates and username.... BRB.PNG Link to ublox thread: https://for...
by Viking
Fri Aug 10, 2018 1:38 pm
Forum: News & Events
Topic: Curt von Delius hits 200k' with his Phoenix 4 2 stage stack
Replies: 29
Views: 1310

Re: Curt von Delius hits 200k' with his Phoenix 4 2 stage stack

... The video also does not give an actual altitude, no indication of why. At 3:05 into the video it says 244186 feet MSL estimated. So doesn’t seem this will actually count for any records. I'd be interested in how they came up with that figure, as far as I understand, baro altimeters are only goo...
by Viking
Tue Jul 31, 2018 1:18 pm
Forum: Western Australian Rocketry Society
Topic: Saturday 28th July - Grass Valley Launch
Replies: 4
Views: 329

Re: Saturday 28th July - Grass Valley Launch

It was a great day, and congrats to Jeremy for his L3.

SpaceManMat wrote:I need to get my but into gear and do some more building, far too busy with other stuff at the moment.

Ditto, but it's my repair/rebuild pile that needs attention before the next launch.
I literally have nothing airworthy :oops:

Go to advanced search