Search found 1200 matches

by Aero
Mon Feb 03, 2014 4:24 pm
Forum: News
Topic: Reaction Engines
Replies: 37
Views: 14417

Re: Reaction Engines

Ah... you might want to cut all those numbers in half. Skylon uses two SABREs, and their combined thrust and weight are similar to the figures you provided. Accurate numbers (for SABRE 2; the latest version is SABRE 4) can be had from the C1 trajectory spreadsheet. My information is from http://en....
by Aero
Mon Feb 03, 2014 5:50 am
Forum: News
Topic: Reaction Engines
Replies: 37
Views: 14417

Re: Reaction Engines

It can be ground-tested. It can but for it to make TRL5, it needs to be tested across a broad range of environmental conditions. If that can be done someplace like Marshall, then there's an advantage to ground testing. If there is no preexisting thrust stand that can duplicate the expected environm...
by Aero
Sun Feb 02, 2014 5:31 am
Forum: News
Topic: BLP news
Replies: 665
Views: 355871

Re: BLP news

Does anyone have a guess as to why BLP announced this demo in the first place if the information released so far is all they ever planned to tell the world? I mean, they could have had the same demo with the same attendees just by having a few private communications. There was no need to tell the wo...
by Aero
Sun Feb 02, 2014 5:09 am
Forum: News
Topic: Reaction Engines
Replies: 37
Views: 14417

Re: Reaction Engines

If it's a boilerplate test vehicle you're after, a Skylon-like one would probably make a lot more sense. Is that what it would be, a boilerplate test vehicle? I don't know about the name but I want a vehicle with enough hydrogen/ lox capacity to reach the flight regime where the Sabre can transitio...
by Aero
Sat Feb 01, 2014 8:58 pm
Forum: General
Topic: sugar battery an order of magnitude better then lithium.
Replies: 6
Views: 4234

Re: sugar battery an order of magnitude better then lithium.

First they used our corn to make ethanol/gasoline,
Now they are going to take our remaining corn syrup to make electricity.

Its a conspiracy against popcorn I tell ya. :D
by Aero
Sat Feb 01, 2014 8:21 pm
Forum: News
Topic: Reaction Engines
Replies: 37
Views: 14417

Re: Reaction Engines

As for flying the engine. It does not need a Skylon to fly on. It can fly on a test vehicle. Interesting thought. What would constitute a valid flight test vehicle and where would we find one? Physically the Sabre engine is huge and it gulps propellant. Add: My vote is to build a full capacity engi...
by Aero
Tue Jan 14, 2014 7:55 pm
Forum: News
Topic: BLP news
Replies: 665
Views: 355871

Re: BLP news

one ten thousandths of a liter - That's one cubic centimeter, isn't it?

millions of watts of power - That's megawatts, or mega J/s, (s) > more than 0.278 kilowatt hours per second. Like 2-3 cents worth of power per second.

It should be detectable but needs to be scaled up :)
by Aero
Thu Jun 27, 2013 5:01 pm
Forum: News
Topic: New NBC/Alan Boyle fusion article
Replies: 6
Views: 3787

Re: New NBC/Alan Boyle fusion article

Interesting. I guess we knew that, but adding up the $ I get $10,775,504.14 from September 2009 to about now, June 2013. Two and a half million $ a year on average. Take out overhead and G & A that hardly leaves enough for salaries. If anything is being done to advance Polywell, it's being done else...
by Aero
Thu Mar 07, 2013 6:22 pm
Forum: News
Topic: Some guy at Google likes this
Replies: 11
Views: 7198

Re: Some guy at Google likes this

If/when the Navy cuts EMC2 loose, don't we expect to see some publications from EMC2? Surely the work has advanced the understanding of certain plasma physical phenomenon worthy of a paper or two.
by Aero
Tue Jan 29, 2013 5:30 am
Forum: General
Topic: mystery explosion at Iran's Fordow facility
Replies: 31
Views: 7682

Radon Gas explosion?
by Aero
Thu Jan 10, 2013 4:04 am
Forum: News
Topic: Apparently we can feasibly get warp drives
Replies: 28
Views: 16390

The posted article is dated Sept. 17. Has there been any news in the in 3 months since then?
by Aero
Mon Dec 31, 2012 9:50 pm
Forum: General
Topic: New currency?
Replies: 48
Views: 13354

If we did this, (based currency on energy) we would have to cancel Polywell research and many others since success would devalue the world monetary supply.

Or we could just funnel all energy research funds into tok research, that would be safe.
by Aero
Thu Dec 13, 2012 3:43 pm
Forum: General
Topic: Under four billion
Replies: 37
Views: 12032

I already have the dry mass though(though it is a bit arbitrary), what I needed is the fuel mass needed to make the trip(to the moon for this case, though you can do a Mars trip by changing the delta V, engine mass, and ISP accordingly). My big concern was with ISP being pounds of thrust and propel...
by Aero
Tue Oct 16, 2012 11:06 pm
Forum: News
Topic: SpaceX News
Replies: 2324
Views: 1168625

Let us ee. E=1/2mv^2 1kg to orbit is about 1*7000^2/2~25MJ or 25000kWs 25000/3600 ~ 7kWh. At 14 cents/ kWh, that is a whopping ONE DOLLAR! $10,000/kg seems a tad inefficient. Perhaps a Kite Launcher-HASTOL duo would get closer. $1.00 is very close to the number I have seen touted as the electrical ...
by Aero
Tue Oct 16, 2012 11:06 pm
Forum: News
Topic: SpaceX News
Replies: 2324
Views: 1168625

Let us ee. E=1/2mv^2 1kg to orbit is about 1*7000^2/2~25MJ or 25000kWs 25000/3600 ~ 7kWh. At 14 cents/ kWh, that is a whopping ONE DOLLAR! $10,000/kg seems a tad inefficient. Perhaps a Kite Launcher-HASTOL duo would get closer. $1.00 is very close to the number I have seen touted as the electrical ...