Dibbs

Title: Dibbs
[Cover Img]	About: Moderator: Ben Shelef Created: July 6, 2008 Modified: July 6, 2008	Tags: This is a collaborative article Discipline(s): Wiki, Engineering

 

Abstract

This is a collaborative page used for figuring out who's doing what.

Editors: it's easiest to use the section-edit links to get straight to the list you want to modify

Because of a bug in the issue tracker: it is best to add or edit issues on your user page, and only SHOW your issues on this page.

Brad Edwards

brad_edwards@yahoo.com

<issues project = "Edwards" filter = "false" search = "false" />

Kinda Done	In Progress	Intend to do
General Wiki set-up	Filling in background material for people to work with Fleshing out work projects Recruit people	Collaboration in general Filling in the integration Matrix - this may be constantly changing and too complex to be useful so I need to evaluate it first Will pick my favorite technical topics to work once the site is up and operational

Ben Shelef

Kinda Done	In Progress	Intend to do
Article Tags When - When will the SE be built? Specific Strength in Yuris - How to characterize a tether Status and overview on Baseline Climber System	Dibbs Orbital Debris Mitigation Disposable One-Way Elevator Tether-Based Asteroid Payload Return System - analysis of tether system on small asteroid Velocity-like quantities Solar Augmented Climber and Implications - how solar power reduces requirements on CNTs	Strengh Power Lifetime - the relationship between the three quantities FAQ - a set of pages for the FAQs at http://www.spaceward.org/elevator-faq Can I Ride - addressing several frequently asked aspects of manned travel Yuri Artsutanov

Andrew Price

email: aprice2704@gmail.com

http://www.healthspace.com HealthSpace Integrated Solutions Ltd.

http://www.skyder.com Skyder Research Ltd.

Wants a space elevator that can lift 400,000 teu (20ft containers) of cargo per year

<issues project = "Aprice" filter = "false" search = "false" />

Kinda Done	In Progress	Intend to do
		Perhaps -- Coordinator of the Journal of Space Elevator Science, a publication of the Space Elevator Systems Institute

Ed Gray

Economics ed_gray@sbcglobal.net

<issues project = "Ed Gray" search="false" filter="false" />

Kinda Done	In Progress	Intend to do

Greg Rebholz

Legal Pillar (wiki) gregrebholz@gmail.com <issues project = "Greg Rebholz" search="false" filter="false" />

Kinda Done	In Progress	Intend to do
Distribute legal landscape paper	Formation of communications group Development of Legal Pillar on wiki Network with space law lawyers to seed the SE concept	Agency creation

Amie Ellison

Japanese Translation <issues project = "Amie Ellison" search="false" filter="false" />

Abraham Becker

Ablative Propulsion for Contingency Reentry <issues project = "Abraham Becker" search="false" filter="false" />

 I propose the investigation of a failsafe emergency system for SE that would protect crew, climbers and potentially ribbon in the event of a LEO ribbon severing.  This would be achieved through the use of a ribbon deployable reflector mechanism and collections of ground basedlasers to support the hardware in the event of catastrophic sever.  Given the relatively narrow range (400km - 3000km altitude) of a likely LEO sever, a limited number of deployable reflectors could effect a SE ribbon backup system.
    The reflectors could either make use of (1) laser ablative material or 

(2) laser photonic pressure to achieve the lift to ensure the safety of the crew and hardware. The key issue would be the development of a long lasting lightweight laser ablative with sufficient thrust capability to achieve the objective. Alternatively, the photon pressure could be employed when the price-performance of megawatt lasers drops below a tipping point to enable the economic feasibility of such an undertaking.

   Optimally, the lower ribbon could be suspended for a long enough duration to be re-attached with the upper ribbon portion, which could be held down by the

application of a similar system only inverted to deploy beams down from GEO to a reflector above the sever point. The power of the beams could be adjusted to enable an intercept and eventual fusion of the two ribbon segments. Given the ribbonmass requirements, nanotech robots would most likely be used to effect the fusion of CNT composite materials.

    This investigation would be advisable in light of the extreme cost of the

SE assets and the likelihood of an eventual ribbon severing in LEO. Even if the normal operation of SE poses little threat of sever, unexpected solar events like a coronal mass ejection intersection with earth's magnetosphere could make a sever much more likely due to the attendant variations of trajectories of LEO objects. The additional costs of such a system would only be more lasers of the kind to be developed in any event for the power beaming app. The benefit would obviously be the protection of life and expensive hardware even in the event of catastrophic failure.

ANB 07/22/08

Andreas Hein

Ablative Propulsion for Contingency Reentry <issues project = "Andreas Hein" search="false" filter="false" />

Bryan Laubscher

Red Team Concept - Oscillations, Satellites and Debris <issues project = "Bryan Laubscher" search="false" filter="false" />

Jim Dempsey

Numerical simulation tools <issues project = "Jim Dempsey" search="false" filter="false" />

David Lang

<issues project = "David Lang" search="false" filter="false" />

Ted Semon

<issues project = "Ted Semon" search="false" filter="false" />

Blaise Gassend

<issues project = "Blaise Gassend" search="false" filter="false" />

Keith Curtis

Software & Simulation work

<issues project = "Simulation" search="false" filter="false" />

Wiki work

<issues project = "WikiTodo" search="false" filter="false" />

Christopher J Petrella

Spinoff Technologies