Quote from: Roy_H on 06/06/2014 05:08 pmQuote from: Elmar Moelzer on 06/06/2014 03:58 pmFirst, invest into advanced energy (fusion, advanced fission) and propulsion concepts as well as material science.Energy (or lack thereof) is the biggest problem here in earth, in space and on future colonies.I believe the best energy source, both here on earth and in space is the LFTR. Simple, natural load following (no control rods), cheap and plentiful thorium power, inherently safe (requires artificial gravity in space, so spinning version), no long term radio-active disposal problems. http://energyfromthorium.com/Thorium trolls start to be really annoying.You do realize that not all claims from thorium crowd are true? That they aren't immune for pushing agenda?For example, it is not really cheap. It may end up marginally cheaper than uranium reactors - AFTER many years and billions spent on R&D. Not today.China's pilot LFTR starts ops in 2015, based on a recent acceleration of their program, and if it goes well they plan to produce them like sausages within 10 years. Are you saying a small one for base use couldn't be done sooner?QuoteAs for Mars colony application, just imagine how much effort it would be for Mars colony to mine its own thorium!!! There *are* energy sources which can be made self-sustaining much easier than that.A small LFTR needs 2 things; a few tons of thorium fuel (tops) and a small amount of U233 to seed the reaction. Plus the salt. Are you saying <10 tonnes of startup consumables couldn't be shipped from Earth on a BFR? That a small load of re-fueling thorium couldn't be packed in to cover the periodic recharge until extraction techs and machinery were built? Remembering that thorium is a common waste product from the mining of other materials.
Quote from: Elmar Moelzer on 06/06/2014 03:58 pmFirst, invest into advanced energy (fusion, advanced fission) and propulsion concepts as well as material science.Energy (or lack thereof) is the biggest problem here in earth, in space and on future colonies.I believe the best energy source, both here on earth and in space is the LFTR. Simple, natural load following (no control rods), cheap and plentiful thorium power, inherently safe (requires artificial gravity in space, so spinning version), no long term radio-active disposal problems. http://energyfromthorium.com/Thorium trolls start to be really annoying.You do realize that not all claims from thorium crowd are true? That they aren't immune for pushing agenda?For example, it is not really cheap. It may end up marginally cheaper than uranium reactors - AFTER many years and billions spent on R&D. Not today.
First, invest into advanced energy (fusion, advanced fission) and propulsion concepts as well as material science.Energy (or lack thereof) is the biggest problem here in earth, in space and on future colonies.I believe the best energy source, both here on earth and in space is the LFTR. Simple, natural load following (no control rods), cheap and plentiful thorium power, inherently safe (requires artificial gravity in space, so spinning version), no long term radio-active disposal problems. http://energyfromthorium.com/
As for Mars colony application, just imagine how much effort it would be for Mars colony to mine its own thorium!!! There *are* energy sources which can be made self-sustaining much easier than that.
Thorium is available in the surface Martian regolith. So you could in principle scoop it up from the topsoil, and refine/smelt it.
Are you saying <10 tonnes of startup consumables couldn't be shipped from Earth on a BFR?
Quote from: docmordrid on 06/07/2014 08:50 pmAre you saying <10 tonnes of startup consumables couldn't be shipped from Earth on a BFR?I'd rather ship 10 tons of solar panels. Or better yet, a ten-ton small scale solar cell fab!
Think about this - if that $900B 'stimulus' from 2009 had gone into human spaceflight - where would we be now, or in 5 years?
Make "The Case for Mars" required reading for every high school student. And it wouldn't even cost that much to implement.
The best thing SpaceX could do with $30 billion to further their long-term goals is drastically cut launch prices today. Change the price of F9 to $2 million and the price of Falcon Heavy to $4 million. Use the $30 billion to cover the losses. That would trigger a huge increase in demand in a few years, and give them time to get reusability worked out and cheap, first for the first stage then for the upper stage. Eventually, their costs would go down below the low prices and the business would become sustainable.That would push us over the energy barrier to low-cost, high volume access to space. Get over that and everything else follows naturally.
Subsidizing every flight would be leaving money on the table, and I don't think it would help further SpaceX's goals.They already have a long list of customers at the current ~$60M price.
Quote from: Elmar Moelzer on 06/06/2014 03:58 pmFirst, invest into advanced energy (fusion, advanced fission) and propulsion concepts as well as material science.Energy (or lack thereof) is the biggest problem here in earth, in space and on future colonies.I believe the best energy source, both here on earth and in space is the LFTR. Simple, natural load following (no control rods), cheap and plentiful thorium power, inherently safe (requires artificial gravity in space, so spinning version), no long term radio-active disposal problems. http://energyfromthorium.com/
First, invest into advanced energy (fusion, advanced fission) and propulsion concepts as well as material science.Energy (or lack thereof) is the biggest problem here in earth, in space and on future colonies.
I didn't think the OP meant $30B. I assumed using "Giga" he meant "huge unlimited money", maybe that's a US english thing.
The best thing SpaceX could do with $30 billion to further their long-term goals is drastically cut launch prices today.