SpaceElevatorPower: Difference between revisions
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|Power input || 20 - 150 || | |Power input || 20 - 150 MW || Can be from any conventional source. Ocean going platforms can have this amount of power available from diesel engines. | ||
|- | |- | ||
|Power in laser beam || 2 - 15 || | |Power in laser beam || 2 - 15 MW || This power does not need to be in a single beam but can come from multiple beams interlaced in time (pulsed beams) | ||
|- | |- | ||
|Primary | |Primary Optics || || Segmented adaptive optics mirror similar to those in major astronomical observatories | ||
|- | |- | ||
| | |Primary Beam diameter || 10-30 meters || This size is determined by the focusing required and to reduce the intensity to a relatively safe level. | ||
|- | |- | ||
| | |Wavelength || TBD nm || To be matched to the type of cells and lasers available. | ||
|- | |- | ||
|Power source || Solid-state disk laser || | |Tracking accuracy || TBD mrad || Determined by laser beam and receiver sizes. | ||
|- | |||
|Power source || Solid-state disk laser || Stacked diodes are also coming on line. | |||
|} | |} | ||
== Status == | == Status == | ||
Boeing has demonstrated operation of a 25kW laser of | Boeing has demonstrated operation of a 25kW laser of the kind we need and claim they can build MW lasers | ||
Beaming 9+kW lasers over short distances are | Beaming 9+kW lasers over short distances are to be demonstrated at the Spaceward Space Elevator Games | ||
Adaptive optics have demonstrated long distance capabilities | Adaptive optics have been demonstrated with long distance capabilities | ||
Include images and videos from the SE Games | Include images and videos from the SE Games | ||
Include design write-ups | Include design write-ups | ||
| Line 31: | Line 34: | ||
Delivering power over the distance of the elevator is a challenge but quickly being addressed by current technology. | Delivering power over the distance of the elevator is a challenge but quickly being addressed by current technology. | ||
== Work Needed == | == Major Design Challenges== | ||
*[[ClimberTracking| Climber Tracking on the Ribbon]] | |||
*[[ClimberSystem| Overall Climber System Engineering]] | |||
== Additional Work Needed == | |||
{| border="1" cellpadding="2" | {| border="1" cellpadding="2" | ||
Revision as of 07:02, 10 July 2008
Power Beaming System
Power is needed for everything and effective delivery over 10's of thousands of kilometers is not easy. Various methods were examined and laser power beaming was selected for the baseline. This is a mature yet still rapidly evolving technology.
| Value | Details | |
| Power input | 20 - 150 MW | Can be from any conventional source. Ocean going platforms can have this amount of power available from diesel engines. |
| Power in laser beam | 2 - 15 MW | This power does not need to be in a single beam but can come from multiple beams interlaced in time (pulsed beams) |
| Primary Optics | Segmented adaptive optics mirror similar to those in major astronomical observatories | |
| Primary Beam diameter | 10-30 meters | This size is determined by the focusing required and to reduce the intensity to a relatively safe level. |
| Wavelength | TBD nm | To be matched to the type of cells and lasers available. |
| Tracking accuracy | TBD mrad | Determined by laser beam and receiver sizes. |
| Power source | Solid-state disk laser | Stacked diodes are also coming on line. |
Status
Boeing has demonstrated operation of a 25kW laser of the kind we need and claim they can build MW lasers Beaming 9+kW lasers over short distances are to be demonstrated at the Spaceward Space Elevator Games Adaptive optics have been demonstrated with long distance capabilities
Include images and videos from the SE Games Include design write-ups
Delivering power over the distance of the elevator is a challenge but quickly being addressed by current technology.
Major Design Challenges
Additional Work Needed
| Item | Notes |
| Categorize the available laser systems | Select for overall capital and operational cost, efficiency of recievers, lifetime, weather considerations, platform stability requirements,... |
| Detail optics system | Size, performance, cost, ... considerations. |
| Safety issues with high power laser | Outline the requirements for safe operations |
