User contributions for Hkhenson

23 July 2016

• 02:1902:19, 23 July 2016 diff hist +3 design to cost No edit summary

17 July 2016

• 01:5901:59, 17 July 2016 diff hist −6 design to cost No edit summary

13 July 2016

• 05:2905:29, 13 July 2016 diff hist +883 design to cost added links

6 July 2016

• 19:1319:13, 6 July 2016 diff hist +38 m design to cost No edit summary

1 July 2016

• 19:4019:40, 1 July 2016 diff hist +659 design to cost new stuff

16 March 2016

• 06:3506:35, 16 March 2016 diff hist +127 design to cost No edit summary

4 July 2015

• 15:3915:39, 4 July 2015 diff hist +1,098 design to cost update

7 May 2015

• 15:2915:29, 7 May 2015 diff hist +1 Mining Asteroids →Process details: updates
• 15:2315:23, 7 May 2015 diff hist +120 Mining Asteroids →Bootstrapping
• 15:1715:17, 7 May 2015 diff hist +64 Mining Asteroids →What it would cost to mine this asteroid

15 April 2014

• 15:4015:40, 15 April 2014 diff hist +2 design to cost No edit summary
• 15:3815:38, 15 April 2014 diff hist +1 design to cost update

21 March 2014

• 20:0420:04, 21 March 2014 diff hist +1,009 design to cost No edit summary

10 March 2014

• 06:4306:43, 10 March 2014 diff hist +1 UpLift No edit summary
• 06:4306:43, 10 March 2014 diff hist −9 UpLift No edit summary
• 06:4106:41, 10 March 2014 diff hist +58,007 UpLift hanging this out of date story here for a bit
• 05:1005:10, 10 March 2014 diff hist +959 N UpLift Created page with "=UpLift: A story of Space Elevators and Power Satellites= ==plus a bit on Mining Asteroids== By Keith Henson (Draft March 9, 2014 ~10,000 words) '''June 2025''' ==The cave..."
• 03:3103:31, 10 March 2014 diff hist +8 N File:Uplift after hemingway.doc MsUpload current

9 January 2014

• 18:2818:28, 9 January 2014 diff hist +175 m Mining Asteroids added ref

2 January 2014

• 22:2822:28, 2 January 2014 diff hist +789 design to cost added more about laser beam problems

24 December 2013

• 16:3016:30, 24 December 2013 diff hist +88 design to cost No edit summary

21 December 2013

• 05:2105:21, 21 December 2013 diff hist +49 N File:Solar PV Experience.jpg Price per watt vs cumulative installations of PV. current

5 December 2013

• 04:1404:14, 5 December 2013 diff hist +13 design to cost added/updated material, added Laser Skylon pix.
• 04:0404:04, 5 December 2013 diff hist +23 design to cost No edit summary
• 03:5803:58, 5 December 2013 diff hist +709 design to cost No edit summary

24 September 2013

• 18:5018:50, 24 September 2013 diff hist +3 m Talk:dollar a gallon gasoline →Contact data for Keith Henson current

10 September 2013

• 19:5019:50, 10 September 2013 diff hist +52 N File:Power Satellite business model with CO2.xls Excel model of power satellite business by quarters. current

2 September 2013

• 21:4721:47, 2 September 2013 diff hist +296 N File:SkylonLaser.jpg Laser powered modified Skylon near the end of acceleration to LEO on hydrogen heated by 3 GW of lasers located in GEO. The exhaust velocity of the hot hydrogen is close to 7.5 km/s. Base artwork courtesy of Reaction Engines, Ltd., modified by Barbar... current

12 April 2013

• 17:4517:45, 12 April 2013 diff hist +8 m Mining Asteroids →Process details

29 June 2012

• 17:0217:02, 29 June 2012 diff hist +87 Laser propulsion No edit summary current
• 16:0416:04, 29 June 2012 diff hist +9 Laser propulsion No edit summary
• 15:5915:59, 29 June 2012 diff hist +22 Laser propulsion No edit summary
• 15:5715:57, 29 June 2012 diff hist +41 N File:Power sat PandL.jpg First cut power sat P&L, laser propulsion current
• 15:4815:48, 29 June 2012 diff hist +165 N File:Laser propulsion business model.xls First cut at a business model using lasers in space to provide propulsion for LEO to GEO and then end of air breathing to LEO Produced by Keith Henson June 29, 2012 current
• 15:4415:44, 29 June 2012 diff hist +1,454 N Laser propulsion Created page with "Laser propulsion to build power sats, first cut. This rough model uses bootstrapping to build 3.5 GW of propulsion lasers powered from a power sat built only to power the las..."

10 June 2012

• 19:4619:46, 10 June 2012 diff hist +558 Nm Special:Badtitle/NS90:Talk:Mining Asteroids/Rubble Pile Variable for Mining Asteroids/reply Reply to Rubble Pile Variable for Mining Asteroids current

9 June 2012

• 12:5512:55, 9 June 2012 diff hist +1 Mining Asteroids No edit summary
• 12:5212:52, 9 June 2012 diff hist +14,712 N Mining Asteroids Created page with "=Mining asteroids by Keith Henson= June 9 Draft temp post as a wiki for comment! ''This article provides a rough analysis of mining an asteroid for gold and other high value..."

21 May 2012

• 22:4222:42, 21 May 2012 diff hist +96 Penny a kWh →Thermal alternative to PV current
• 22:3722:37, 21 May 2012 diff hist +393 Penny a kWh →Cost of Space Based Solar Power

8 March 2012

• 17:1517:15, 8 March 2012 diff hist +387 Penny a kWh →Cost of Space Based Solar Power

18 October 2011

• 23:0723:07, 18 October 2011 diff hist +421 SBSP--specific power No edit summary current
• 03:3203:32, 18 October 2011 diff hist +725 N SBSP--specific power Created page with "The specific power in kg/kW for a power satellite is a critical number for evaluating the economics of this method of power production. Multiplied by the cost per kg for the lif..."

21 September 2011

• 13:5913:59, 21 September 2011 diff hist +56 Beamed energy propulsion →Numerical investigation of a Gausian power beam heating a surface cooled with hydrogen and re-radiating

15 September 2011

• 15:1015:10, 15 September 2011 diff hist 0 File:Re radiation gausian input.xls uploaded a new version of "File:Re radiation gausian input.xls": Error in computation of Reynolds number current

29 August 2011

• 21:5721:57, 29 August 2011 diff hist +32 Penny a kWh →Cost of power sat energy
• 20:3320:33, 29 August 2011 diff hist +88 dollar a gallon gasoline →Carbon neutral?
• 20:2920:29, 29 August 2011 diff hist +53 dollar a gallon gasoline →Cost
• 20:1920:19, 29 August 2011 diff hist +27 dollar a gallon gasoline →Making synthetic hydrocarbons
• 20:1820:18, 29 August 2011 diff hist +128 dollar a gallon gasoline →Making synthetic hydrocarbons