01-22-2018, 06:19 PM
|
#871 (permalink)
|
Not Doug
Join Date: Jun 2012
Location: Show Low, AZ
Posts: 12,241
Thanks: 7,254
Thanked 2,234 Times in 1,724 Posts
|
How is space tether technology looking? Are electric catapults feasible for cargo?
I have always wondered about bombarding Mars with comets.
|
|
|
Today
|
|
|
Other popular topics in this forum...
|
|
|
01-22-2018, 06:58 PM
|
#872 (permalink)
|
Corporate imperialist
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 11,268
Thanks: 273
Thanked 3,571 Times in 2,835 Posts
|
Use a lissajous orbit like the stereo solar obsevation satellites use.
But it will be easier to find what we need here for a very long time.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
|
|
|
01-22-2018, 07:19 PM
|
#873 (permalink)
|
Human Environmentalist
Join Date: Aug 2010
Location: Oregon
Posts: 12,819
Thanks: 4,327
Thanked 4,480 Times in 3,445 Posts
|
Quote:
Originally Posted by oil pan 4
But it will be easier to find what we need here for a very long time.
|
Yes, we'll have Wally-bots mining old landfills long before we're harvesting space minerals.
|
|
|
01-22-2018, 08:03 PM
|
#874 (permalink)
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,735
Thanks: 8,157
Thanked 8,938 Times in 7,380 Posts
|
I once watched Eugene Water & Electric board employees drop $25,000 worth of copper into a landfill. It was in transformers filled with PCB.
Everybody is in too much of a hurry.
https://en.wikipedia.org/wiki/Interp...nsport_Network
Quote:
The Interplanetary Transport Network (ITN)[1] is a collection of gravitationally determined pathways through the Solar System that require very little energy for an object to follow. The ITN makes particular use of Lagrange points as locations where trajectories through space are redirected using little or no energy. These points have the peculiar property of allowing objects to orbit around them, despite lacking an object to orbit. While they use little energy, the transport can take a very long time. Shane Ross has said "Due to the long time needed to achieve the low energy transfers between planets, the Interplanetary Superhighway is impractical for transfers such as from Earth to Mars at present."[2]
|
__________________
.
.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
____________________
.
.Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
|
|
|
The Following User Says Thank You to freebeard For This Useful Post:
|
|
01-22-2018, 08:39 PM
|
#875 (permalink)
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,735
Thanks: 8,157
Thanked 8,938 Times in 7,380 Posts
|
Quote:
Originally Posted by myself
New Zealand is now a commercial space-faring nation.
|
"Still Testing" Heh.
Kerosene/LOX
3D printed engine parts
Composite fuel tanks
electric turbo-pumps The claim is that it's Moon-capable.
__________________
.
.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
____________________
.
.Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
|
|
|
01-22-2018, 08:41 PM
|
#876 (permalink)
|
Not Doug
Join Date: Jun 2012
Location: Show Low, AZ
Posts: 12,241
Thanks: 7,254
Thanked 2,234 Times in 1,724 Posts
|
1. Send your 64 best unmarried and childless men and 64 best unmarried childless women on a generation ship.
2. Develop FTL drive.
3. Send your 1,024 most annoying future equivalents of millenials.
4. Have them arrive just hours before the generation ship.
5. The generation ship is greeted by a horde of entitled and hungry locusts expecting someone else to make dinner.
6. The generation ship leaves for Venus.
|
|
|
01-22-2018, 10:33 PM
|
#877 (permalink)
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,735
Thanks: 8,157
Thanked 8,938 Times in 7,380 Posts
|
'Old age and treachery...'
They'll trade their FTL drive for lunch.
__________________
.
.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
____________________
.
.Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
|
|
|
01-23-2018, 03:16 PM
|
#878 (permalink)
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,735
Thanks: 8,157
Thanked 8,938 Times in 7,380 Posts
|
Two stories from the 'be careful what you wish for' department:
Creating clouds to stop global warming could wreak havoc - usatoday
A technology many hoped would fight climate change would cause even bigger environmental problems, scientists say - Chicago Tribune
The first is premised on starting and then stopping abruptly (inadvertently or not)
Quote:
Researchers in the study used computer models to simulate what would happen if geoengineering led to climate cooling and then what would happen if the geoengineering stopped suddenly.
|
The second on growing biomass specifically to pyrolyze it.
Quote:
But the core idea is burning trees or other plants for energy while pulling in the resulting carbon dioxide and storing it below ground.
|
Of course, the first of the three Rs is Reduce.
__________________
.
.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
____________________
.
.Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
|
|
|
01-23-2018, 03:22 PM
|
#879 (permalink)
|
Corporate imperialist
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 11,268
Thanks: 273
Thanked 3,571 Times in 2,835 Posts
|
I like reduce, reuse and recycle.
Because I'm cheap.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
|
|
|
The Following User Says Thank You to oil pan 4 For This Useful Post:
|
|
01-23-2018, 03:34 PM
|
#880 (permalink)
|
Master EcoModder
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,908
Thanks: 3,475
Thanked 2,952 Times in 1,845 Posts
|
We will avoid huge economic costs, if we address climate change, and we will save lots of money in the long run, by moving to renewable energy.
Increasing carbon in the soil - which will remove it from the air - will also have big benefits. Each gram of carbon in the soil can absorb at least 8 grams of water (and as much as 20gm in some soils), and the biology that created the soil increases, with more carbon. And nutrients are held in the carbon, as well.
Carbon bonds with everything. We can clean up brown fields with carbon, too.
|
|
|
The Following User Says Thank You to NeilBlanchard For This Useful Post:
|
|
|