Search found 123 matches

by RERT
Thu Apr 21, 2016 12:04 pm
Forum: News
Topic: EM Drive
Replies: 710
Views: 378414

Re: EM Drive

"dox"?
by RERT
Sun Mar 06, 2016 7:42 pm
Forum: News
Topic: The Space Show this week ...
Replies: 3
Views: 4089

Re: The Space Show this week ...

Just listened to the Lerner podcast. Not much news to those familiar with their earlier presentations, except that they are currently 'baking' the oxygen and water out of their tungsten electrodes, and ought to be done next Monday. I guess some chance that there will be more substantial news in thei...
by RERT
Thu Nov 26, 2015 10:39 pm
Forum: News
Topic: p-B11 Fast Ignition Scheme Using PW, ps-scale Laser Pulses
Replies: 10
Views: 14459

Re: p-B11 Fast Ignition Scheme Using PW, ps-scale Laser Pulses

I'm quite surprised that there has been no comment on one thing which caught my eye in the paper: they talk of an 'avalanche' reaction with energetic alphas provoking further reactions. Isn't that a chain reaction? Is the gain so high because they have managed to provoke a small (ok very small!) exp...
by RERT
Thu Nov 26, 2015 2:40 pm
Forum: News
Topic: LENR Is Real
Replies: 1780
Views: 427381

Re: LENR Is Real

Since the topic is 'LENR is Real' not just 'Rossi acts like a fraud', I thought this was interesting.

http://news.newenergytimes.net/2015/11/ ... continues/

Mitsubishi Heavy, Toyota, Nissan are pretty real...

R.
by RERT
Wed Nov 11, 2015 11:55 am
Forum: Design
Topic: Why a cubic arrangement of coils?
Replies: 12
Views: 14331

Re: Why a cubic arrangement of coils?

Oops. Apologies, you're right, the currents are opposed but I realise now the B-fields actually reinforce where the rings approach, so there is no dead spot.

R.
by RERT
Mon Nov 09, 2015 9:43 am
Forum: Design
Topic: Why a cubic arrangement of coils?
Replies: 12
Views: 14331

Re: Why a cubic arrangement of coils?

Yes, you're right, my mistake: if the top & bottom coils are set to match the direction of flow where they meet the sides, the corners don't have a complete 'virtual' flow. But that kind of gets me back to where I started: we are now up to 12 dead spots, because every coil's flow is going in the opp...
by RERT
Fri Nov 06, 2015 10:05 am
Forum: Design
Topic: Why a cubic arrangement of coils?
Replies: 12
Views: 14331

Re: Why a cubic arrangement of coils?

OK, thanks. I hadn't appreciated how the cubic arrangement looks if the 'side' faces all circulate the same way relative to the cube centre, opposite to the top and bottom. At the cost of 4 apparent dead spots where the sides approach, the arrangement approximates the truncated cube shown in the pap...
by RERT
Thu Nov 05, 2015 11:12 am
Forum: Design
Topic: Why a cubic arrangement of coils?
Replies: 12
Views: 14331

Why a cubic arrangement of coils?

Sorry if this was asked an answered eons ago, but the FAQ link is currently broken... Why is a cubic arrangement of coils considered a good idea? Geometrically, the dual shape, a regular tetrahedral 'diamond' seems much better, for the following reasons ( I am assuming current circulates in one dire...
by RERT
Wed Sep 16, 2015 9:50 am
Forum: News
Topic: LENR Is Real
Replies: 1780
Views: 427381

Re: LENR Is Real

http://lenrexplained.com/wp-content/upl ... rected.pdf

Apparently from Ed Storms. Quite interesting.

R.
by RERT
Mon Jun 22, 2015 5:09 pm
Forum: News
Topic: Weird space stuff
Replies: 42
Views: 25058

Re: Weird space stuff

Sigh. It comes to something when between the EMDrive,
Rossi, Sonny White, and aliens building a truncated
Pyramid on Pluto, it isn't clear which is the most crazy
thing to believe in...

R.
by RERT
Fri May 15, 2015 7:04 am
Forum: News
Topic: Musk's Powerwall
Replies: 66
Views: 31514

Re: Musk's Powerwall

I have a 2.5 kW solar system in Scotland (for the subsidy!).

I calculate I could pay $2400 for 4 kWh of diurnal storage, or $4800 for 20kwh of weekly storage, at local power prices.

The powerwall seems reasonably well targeted, but for the installation cost!

R.
by RERT
Mon Apr 20, 2015 1:06 pm
Forum: News
Topic: Lawaranceville E-Newsletter
Replies: 829
Views: 343049

Re: Lawaranceville E-Newsletter

With that number of people, refering to e.g. 'the engineering department' would be kind of disingenuous... R.
by RERT
Fri Apr 10, 2015 9:15 pm
Forum: News
Topic: EM Drive
Replies: 710
Views: 378414

Re: EM Drive

It's late on Friday night, after the bulk of a bottle of red wine, so I contribute this with some trepidation as to how it will look in the morning. I hope you will all still respect me in the morning. Two points: Einstein made us choose between Newtonian mechanics and Electrodynamics. Doubtless it ...
by RERT
Mon Mar 30, 2015 5:08 pm
Forum: News
Topic: Propellantless propulsion from plain-old Special Relativity
Replies: 52
Views: 27579

Re: Propellantless propulsion from plain-old Special Relativ

(V2 X (r X V1)), of course! R.
by RERT
Mon Mar 30, 2015 5:04 pm
Forum: News
Topic: Propellantless propulsion from plain-old Special Relativity
Replies: 52
Views: 27579

Re: Propellantless propulsion from plain-old Special Relativ

GIThruster: the guy whose textbook I quoted (P.C.Clemmow of Cambridge University), as well as DeltaV, explicitly says that momentum conservation can be recovered. Tuval and Yehalom say the same thing at the start of their paper in the revised format. Nonetheless, the mechanical system will experienc...