Search found 22 matches

by jrvz
Mon Oct 03, 2016 5:50 pm
Forum: News
Topic: SpaceX News
Replies: 2286
Views: 597659

Re: SpaceX News

The point was that he wants to send a very large payload (larger than any before) to mars and he only has a perfect launch window every two years (when mars is closest). For operations in earth orbit and even smaller scale missions BEO, an SSTO based on the tanker ITS would be more economic. ... to...
by jrvz
Mon Oct 03, 2016 5:15 pm
Forum: News
Topic: MIT SPARC Presentation
Replies: 8
Views: 5602

Re: MIT SPARC Presentation

I just watched one of Prof. Whyte's videos - very impressive. (I'm looking forward to seeing the other one.) He makes the point that the REBCO superconductor allows higher fields which allow a Tokamak to be made much smaller, which greatly reduces the cost and construction time. Would the same hold ...
by jrvz
Tue Aug 04, 2015 5:54 pm
Forum: News
Topic: PPPL Colloquium: The Lockheed Martin CFR, Aug 6, 2015
Replies: 34
Views: 13493

Re: PPPL Colloquium: The Lockheed Martin CFR, Aug 6, 2015

4:15 in what time zone?
by jrvz
Fri Jul 24, 2015 4:52 pm
Forum: News
Topic: House of Lords’ science&technology committee fusion session
Replies: 2
Views: 6406

Re: House of Lords’ science&technology committee fusion sess

Will there eventually be a transcript?
by jrvz
Fri Jul 03, 2015 2:47 am
Forum: News
Topic: SpaceX News
Replies: 2286
Views: 597659

Re: SpaceX News

Who said top? A containerized laser, sensing and firing through, say, a sliding door on the side of a ConEx box, could operate remotely or even autonomously, without the crew even knowing about it, if it was properly engineered. Or, just lock the human operator(s) into the box before loading. The p...
by jrvz
Thu Jul 03, 2014 4:12 pm
Forum: Theory
Topic: magnetic confinement fails due to charge transfer
Replies: 5
Views: 2849

Re: magnetic confinement fails due to charge transfer

As I understand, his claim is about confinement time rather than Q.
by jrvz
Wed Jul 02, 2014 1:10 am
Forum: Theory
Topic: magnetic confinement fails due to charge transfer
Replies: 5
Views: 2849

magnetic confinement fails due to charge transfer

Bogdan Maglich presented this paper at Thorium Energy Alliance Conference #6 (TEAC6), in Chicago on May 29, 2014. Bogdan Maglich - "Th/U233 breeding Ti above 200 KeV viable , NOT at thermonuclear ion energies" http://www.youtube.com/watch?v=q7_Whm9yQV8 He claims charge transfer between neutral and i...
by jrvz
Mon Mar 10, 2014 4:09 pm
Forum: General
Topic: new molten salt reactor design
Replies: 2
Views: 853

new molten salt reactor design

Transatomic Power has published a white paper detailing their new design for a molten salt reactor: http://transatomicpower.com/white_papers/TAP_White_Paper.pdf . They make some interesting design choices, and give their rationale: They have no beryllium in their salt. This raises its melting point,...
by jrvz
Fri Mar 01, 2013 5:37 pm
Forum: Design
Topic: Magrid design.
Replies: 7
Views: 4651

Re: Magrid design.

You can think of this as a descendent of the "baseball seam" devices from the 70s. See: http://www.flickr.com/photos/llnl/3085193876/
by jrvz
Fri May 13, 2011 5:29 pm
Forum: News
Topic: Alan Boyle update
Replies: 111
Views: 43124

Re: Military organizations in space

I think which model (e.g. air force or navy) will prevail will depend on the nature of the operations undertaken. Long-endurance, independent commands? The navies of the world do that kind of work. Short missions which are dependent on relatively local and centralized resources? Air forces operate ...
by jrvz
Thu Aug 26, 2010 5:20 pm
Forum: General
Topic: Alternate Space Elevator Design
Replies: 25
Views: 5707

no net charge

According to TFA, the tower has no net charge - there's a layer of positive charge to balance the charge of the electron gas. They're separated by a very good insulator. However, it seems to me that the electrons would not fill the volume, but (due to the attraction of the positive charges) would in...
by jrvz
Wed Aug 25, 2010 5:38 pm
Forum: News
Topic: Any News about Polywell ?
Replies: 104
Views: 23904

If one inch stops 1 unit of radiation, then 2 inches stops 10 units, 3 inches stops 100 units, etc. I would say it differently: If one inch reduces the radiation by a factor of 10, then the second inch also reduces it by a factor of ten, so the two together reduce it by a factor of 100. Three inche...
by jrvz
Thu Aug 05, 2010 5:00 pm
Forum: General
Topic: Special Interests and Energy
Replies: 34
Views: 4838

The thing that stands out from this is the old tired call for greater efficiency. As an engineer and somebody who has been watching these issues for over thirty years, I find these calls for greater efficiency by people who have never had to go without air conditioning more than a little hypocritic...
by jrvz
Fri May 28, 2010 4:53 pm
Forum: News
Topic: Speaking of Thorium and Navy Nuclear Power verses Polywell
Replies: 36
Views: 8342

Re: Speaking of Thorium and Navy Nuclear Power verses Polywe

Was reading through the FY11 Defense Budget Report from the Armed Services Committee. ... http://armedservices.house.gov/ Where is the budget report? The Armed Services Committee site mentions the "National Defense Authorization Act FY2011 (H.R. 5136)" but doesn't actually provide a link. I found a...
by jrvz
Thu Apr 29, 2010 4:33 pm
Forum: Theory
Topic: A new (?) paper on a sorta- Polywell concept.
Replies: 19
Views: 5523

That sounds right. That's a higher coil density than his Figs. 1 & 2, which have coils at 0, 30, 60, 90 deg. Field lines topology for spherical system of 5 ring cusps and point cusps at the axes is shown in Fig. 2. It illustrates the minimum-B configuration that offers a good magnetohydrodynamical ...