Search found 2252 matches

by hanelyp
Fri Aug 09, 2019 1:10 am
Forum: News
Topic: EM Drive
Replies: 693
Views: 253207

Re: EM Drive

Skipjack wrote:I wont believe that this thing works until I see repeatable and reproducible thrust numbers higher than a photon rocket.

Even then, we need an arrangement where we can be confident it isn't photon recirculation in the feed line.
by hanelyp
Thu Jun 27, 2019 6:58 am
Forum: General
Topic: Extraterrestrial colony companies
Replies: 38
Views: 18596

Re: Extraterrestrial colony companies

Of course if you import too much gold, the price of gold crashes. As has been seen when Spain imported gold plundered from the Americas, and the California gold rush.
by hanelyp
Mon Jun 03, 2019 5:11 pm
Forum: General
Topic: Crime and Punishment: Oklahoma (& Texas) style!
Replies: 981
Views: 166836

Re: Crime and Punishment: Oklahoma (& Texas) style!

Barrycade, as usual, speaks nonsense.
by hanelyp
Fri May 31, 2019 10:38 pm
Forum: News
Topic: Direct O2 evolution in collisions of carbon dioxide with surfaces
Replies: 7
Views: 3015

Re: Direct O2 evolution in collisions of carbon dioxide with surfaces

How much does it erode the impacted surface? And I presume ambient pressure has to be very low, of the O2 is likely to quickly react with the released carbon.
by hanelyp
Sun Apr 21, 2019 5:23 am
Forum: General
Topic: Extraterrestrial colony companies
Replies: 38
Views: 18596

Re: Extraterrestrial colony companies

Blackbody radiation scales with the 4th power of temperature. So a 30% reduction in incoming solar energy gives less than a 9% drop in temperature. Not sure I follow your calculations. Thought it was heat loss by radiation was proportional to the 4th power of the temperature difference. Nope, black...
by hanelyp
Fri Apr 19, 2019 12:28 am
Forum: News
Topic: US navy patents exotic propulsion aircraft
Replies: 5
Views: 3751

Re: US navy patents exotic propulsion aircraft

The F-302 is supposed to be ultra top secret. :wink:
by hanelyp
Fri Apr 19, 2019 12:23 am
Forum: General
Topic: Extraterrestrial colony companies
Replies: 38
Views: 18596

Re: Extraterrestrial colony companies

Blackbody radiation scales with the 4th power of temperature. So a 30% reduction in incoming solar energy gives less than a 9% drop in temperature. On the other hand, if I've got my calculations right, a planet twice the distance from the star would have a roughly Earth like temperature.
by hanelyp
Tue Apr 09, 2019 1:43 am
Forum: News
Topic: ENN Fusion Engine Challenge (FUGINE)
Replies: 3
Views: 3211

Re: ENN Fusion Engine Challenge (FUGINE)

"Climate change", second sentence in the introduction. Well, there goes their credibility. Fusion energy does not need a bogus climate crisis to justify it.
by hanelyp
Tue Apr 09, 2019 1:37 am
Forum: News
Topic: Thermal battery with 6-8 times the energy density of lithium
Replies: 10
Views: 4980

Re: Thermal battery with 6-8 times the energy density of lithium

I didn't see Rossi's picture in the article, but a thermal generator with only 3 moving parts? Suggests thermoelectric generator with efficiencies ranging from 6% to 15%, that doesn't seem like a very good deal to me. I've read of Stirling-electric generators with a grand total of 2 moving parts, n...
by hanelyp
Tue Mar 26, 2019 5:52 am
Forum: General
Topic: Sell The Whitehouse to Trump
Replies: 993
Views: 183310

Re: Sell The Whitehouse to Trump

Build a wall, steal a wall, who would have thunk it https://www.facebook.com/thedailyshow/videos/1164893220345695/?t=2 :lol: :lol: And...that's an argument for not building a wall? Or one for building a wall along with more border guards/troops to reinforce it and help keep it secure? If a bank get...
by hanelyp
Fri Mar 22, 2019 1:17 am
Forum: General
Topic: Sell The Whitehouse to Trump
Replies: 993
Views: 183310

Re: Sell The Whitehouse to Trump

Will the desalination and water pumping be able to match the highly variable electrical production from solar and wind?
by hanelyp
Tue Feb 12, 2019 12:33 am
Forum: General
Topic: Sell The Whitehouse to Trump
Replies: 993
Views: 183310

Re: Sell The Whitehouse to Trump

NPR => fake news.
by hanelyp
Fri Jan 25, 2019 7:07 am
Forum: News
Topic: EMC2 news
Replies: 420
Views: 191197

Re: EMC2 news

A fission reactor that can be transported by air, then set up behind local materials for radiation shielding, not a huge problem. Transporting that same reactor home after it's been operating, much harder. Fusion would be a huge improvement in longer lived induced radiation. But the polywells we've ...
by hanelyp
Fri Jan 04, 2019 4:57 am
Forum: News
Topic: SpaceX News
Replies: 2276
Views: 475190

Re: SpaceX News

As I understand it, carbon fiber produces fewer secondaries from cosmic rays than a steel structure. A matter of atomic number.
by hanelyp
Sat Dec 22, 2018 11:31 pm
Forum: News
Topic: SpaceX News
Replies: 2276
Views: 475190

Re: SpaceX News

Until we can launch despite common winds, space flight won't be where we want it.

Go to advanced search