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Compassion and concern for France tonight. Far more important than here?

A request to UK rocketry people. I've been searching for example papers covering the L2 certification written test. I've found two, one on the UKRA site but would like to see a couple of more recent papers. Can anyone advise as to where I might find some? In short I'd like to know...

Well done Lewis Hamilton! World champion indeed. Forefront of ground technology, In the dry and in the wet. SO.

When I joined the Rocketry Forum over a year and a half ago, I seem to remember that membership numbers were around 11,000. Today they stand at over 22,000! Maybe my memory has failed me but the numbers have increased considerably. If this is the case is rocketry popularity on the increase in...

Using black powder from say an Estes motor for duel deployment ejection charges. Is it safe/legal to do so? If so, I guess it is not particularly effective as I can't find mention of it on here. Advice welcomed. SO.

I recently flew a rocket with a Cesaroni H163 motor. This is only the second HPR motor I have flown, the first being a G motor in the same 3 grain tube. On inspection after the flight I noticed that the H motor case was punctured in two places (close to the forward end about 10mm apart). They...

Amongst a number of others I have a future project planned which involves a design using a 6" base body tube and a 4" top tube. I'm thinking of using PML phenolic tubes for this, my experience of them so far is good and they are readily available in the UK. The problem I have is making the...

I've been reading a few threads on rocket altitude record attempts using minimum diameter rockets. I'm interested in having a go at this but have a couple of questions. 1. Given the probability of never seeing the rocket again which I assume is quite high, how do you minimise the risk of...

I bought an Estes CC Express about a year ago and built the rocket around 9 months ago. Until last weekend when I decided to fly it for my younger grandson, it had been stored indoors. I'd built it exactly in line with the instructions. We flew it without the second stage on a C11-5 motor...

Please could you advise what I need to do to model and simulate a dual deployment design on OR. Mainly to predict deployment velocity of the main parachute and to provide a simulated plot of the flight. I'm sure it's possible but I haven't figured it out yet. Thanks. SO.

I wonder how much Junk is out there? Not in earth orbit or flying to infinity, but on the ground. Junk created by us and lost through flight failure or poor design. Plastic nose cones, fin cans, nomex wadding, plastic and metal motor cases, corrosive spent chemicals seeping into the ground...

I'm addressing this question to UKRA and in particular any EARS members that may like to comment because that's where we will launch our rocket. MAP level 2. The egg launch option. This is actually a serious question. What is the specification for the egg? Presumably from a chicken, not...

I've read on here before (not sure where) that the rocketry hobby in the US is in decline. Is this actually true? If so what is the reason/s for the decline and what is the US rocketry community doing to reverse it? SO.

Please can anyone advise a reliable and legal UK supplier of black powder? My purpose is to use it in ejection charges for a dual deployment rocket. I'm assuming there are suppliers as I've seen trials and actual charges going off at EARS. Can't find a supplier on the web however. Also...

"Pluto Awaits" "New Horizons" What's the next challenge? To science, to the the universe, to the unknown. Seriously, within budgetary limits (which shouldn't confine original thought), where do you all see the next scientific achievement? The last one was DNA mapping, what do you reckon...

Fantastic! Can't wait to see the photos. Almost as good as Rosetta and Philae. Though not quite as good as beating the Aussies in the first test! That really was out of this world! SO. PS. Hope there will be some that understand this?

I have a rocket using a cluster of three Estes D12 motors. Two attempts at launching it so far have failed due to igniter failure. I did check and it was igniter failure rather than the lead connections to igniter. What is the most reliable method of igniting all three motors? - I have...

I'm planning to build my first duel deployment rocket. My knowledge of design is based only on what I've read. A couple of basic questions. 1. Is there a good reason why the initial rogue deployment is not triggered by the ejection charge within the motor (in my case a Cesaroni 29mm or...

Congratulations to the James Hornsby School for their first place in the UKAYROC challenge and who now go on to represent the UK at the model rocketry challenge at the Paris Air Show. It takes place today and tomorrow and pitches them against the respective winners from France and the UK. I...

Please can anyone advise if the EARS launch posted on their site for the 20/21st June and labelled as "being considered", is still being considered? Early replies appreciated. SO.