Search found 2539 matches

by OverTheTop
Thu Mar 22, 2018 6:42 pm
Forum: Scratch Built
Topic: Complete Newbie - Clusters and Clamps and Control (Oh No!)
Replies: 16
Views: 392

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

I don't know the standing on this for either TRA or AMRS perspective. Someone else can possibly chime in on that. I will comment on the fact that you are guiding the rocket back to a known location. If you have the "known location" too close to your launch location you have likely increase...
by OverTheTop
Wed Mar 21, 2018 8:59 pm
Forum: Scratch Built
Topic: Complete Newbie - Clusters and Clamps and Control (Oh No!)
Replies: 16
Views: 392

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

Check out this build for a great cluster ignition method. Sort of a refined version of "flash in the pan" ignition.
IMG_5256.jpg


www.rocketryforum.com/showthread.php?13 ... 1-50-build

Should work great for BP motors.
by OverTheTop
Wed Mar 21, 2018 8:03 am
Forum: Scratch Built
Topic: Complete Newbie - Clusters and Clamps and Control (Oh No!)
Replies: 16
Views: 392

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

Welcome to the forum dmeeze. In relation to guidance you will need to check with the AMRS rules, or get direct clarification on their stance on this, since you are with QRS. In Tripoli Rocketry Association guidance is allowed, as long as it is not controlling the rocket towards a target. I choose to...
by OverTheTop
Tue Mar 20, 2018 5:27 pm
Forum: Scratch Built
Topic: What weighs 2.5g and flies 430ft?
Replies: 8
Views: 299

Re: What weighs 2.5g and flies 430ft?

Great flights!
by OverTheTop
Tue Mar 20, 2018 3:42 pm
Forum: Scratch Built
Topic: Something small and fast
Replies: 20
Views: 491

Re: Something small and fast

Links work :wink:
by OverTheTop
Tue Mar 20, 2018 2:18 pm
Forum: Scratch Built
Topic: Something small and fast
Replies: 20
Views: 491

Re: Something small and fast

I can't see any images either. There was a simulation drawing I think earlier on, but now it is not displayed.
by OverTheTop
Sun Mar 18, 2018 11:56 am
Forum: News & Events
Topic: Just another launch day...
Replies: 20
Views: 538

Re: Just another launch day...

Did you attend a HPR launch over there Scoop?

I was all set to attend a NEFAR launch during my trip but a rainstorm went through the day before and the launch had to be cancelled :( . I took a Falcon 9 model across to fly. I can now say my Falcon 9 model has flown to 39k' :D
by OverTheTop
Thu Mar 15, 2018 2:08 pm
Forum: Queensland Rocketry Society
Topic: 18th March 2018 Launch "Flames Smoke & Noise Spectacular"
Replies: 37
Views: 1040

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

Good luck with the L1 snrkl :). Looks great!
by OverTheTop
Wed Mar 14, 2018 1:31 pm
Forum: Australian Rocketry
Topic: The motors have arrived!
Replies: 9
Views: 544

Re: The motors have arrived!

Yay for motors. Nay for jetlag.
by OverTheTop
Wed Mar 14, 2018 6:32 am
Forum: Hybrid - Crossbreeding Rocketry
Topic: Gilmour is using Hydrogen Peroxide as their oxidiser
Replies: 12
Views: 560

Re: Gilmour is using Hydrogen Peroxide as their oxidiser

I heard somewhere that one of the workers a Saturn 5 stage blew themselves up when they kicked a frozen lump of LOX on the test pad, not a recommended propellant handling method. I recall that the person in question lost a leg. He kicked a stalacmite that had formed on the ground from a LOX leak so...
by OverTheTop
Tue Mar 13, 2018 2:39 pm
Forum: Hybrid - Crossbreeding Rocketry
Topic: Gilmour is using Hydrogen Peroxide as their oxidiser
Replies: 12
Views: 560

Re: Gilmour is using Hydrogen Peroxide as their oxidiser

Hydrogen peroxide will continue to be used, as a monopropellant, for attitude control and in other low-thrust applications. It will probably not be used as an oxidizer for main propulsion. That statement, to me, reads "low Isp". Given that assumption I suspect either cost or availability ...
by OverTheTop
Tue Mar 13, 2018 12:34 pm
Forum: Hybrid - Crossbreeding Rocketry
Topic: Gilmour is using Hydrogen Peroxide as their oxidiser
Replies: 12
Views: 560

Re: Gilmour is using Hydrogen Peroxide as their oxidiser

I am not a chemist, but since I do hang around quite a few of them (one of the perks of designing spectrometers :roll: ) I asked a few about their thoughts on the matter. Basically their opinion was that there was not a huge difference in them from their point of view. Each will have its own foibles...
by OverTheTop
Mon Mar 12, 2018 6:39 pm
Forum: Hybrid - Crossbreeding Rocketry
Topic: Gilmour is using Hydrogen Peroxide as their oxidiser
Replies: 12
Views: 560

Re: Gilmour is using Hydrogen Peroxide as their oxidiser

This book is great for hypergolics. Not sure if it covers HTP. If it does you should get a good feel for how bad it might be: https://library.sciencemadness.org/library/books/ignition.pdf If it has nothing on HTP you will enjoy the read anyway :D Whatever they are using needs to work within whatever...
by OverTheTop
Thu Mar 08, 2018 6:42 pm
Forum: Melbourne Amateur Rocket Society Inc.
Topic: Dates for 2018
Replies: 9
Views: 890

Re: Dates for 2018

Here are the dates for Tripoli Rocketry Association launches for 2018 Launches are at the usual Serpentine launch site 15 April 6 May 3 June 1 July 5 August 2 September 6-7 October (Possible 2 Day Launch) 3-4 November (Possible 2 Day Launch) As usual, launch dates are subject to a one week postpone...
by OverTheTop
Thu Mar 08, 2018 10:51 am
Forum: Scratch Built
Topic: What weighs 2.5g and flies 430ft?
Replies: 8
Views: 299

Re: What weighs 2.5g and flies 430ft?

Very cute.

How about deleting the launch lug and building a launch tower for extra altitude? :D

Go to advanced search