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.. NSSO...Space-Based Solar Power As an Opportunity for Strategic Security
So, care to share why you would not fry things or get turbulence? Would you
split it over lots of beams or what? Brian -- Brian Gaff - Note:- In order to reduce spam, any email without 'Brian Gaff' in the display name may be lost. Blind user, so no pictures please! "Fred J. McCall" wrote in message ... "Brian Gaff" wrote: :Would this not fry anything flying through the beam No. :and be almost impossible to focus due to the turbulence in the beam? Not a problem. :Also you would need some form of high orbit capable shuttle to service these :huge orbiting devices. Yes, you would need the capability to service them, but you need the capability to build them up there in the first place, so servicing them is easy coming from that. -- "Insisting on perfect safety is for people who don't have the balls to live in the real world." -- Mary Shafer, NASA Dryden |
#3
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.. NSSO...Space-Based Solar Power As an Opportunity for Strategic Security
I am not interesting in your bottom posting convention. I am blind and
prefer top posting to read. The sad fact is that most who bottom post never edit the quoted docs and as one can rad the preceding messages, top posting allows you to get at the guts of the reply without having to manually fiddle with cursor down and listen to endless greater thans in the speech synth. If you can be pedantic about this, then so can I. My view is as valid as yours and of course so is my arrogance.. grin.. Thanks for the limited info on beam density, so why is it so and how do you retrieve a useful amount of power from a a diverse beam without a huge connection of receivers? If you are using land to this extent then why not build you arrays on the ground on two sides of the globe, use dc transmission lines to send the stuff where you want it. Brian -- Brian Gaff - Note:- In order to reduce spam, any email without 'Brian Gaff' in the display name may be lost. Blind user, so no pictures please! "Fred J. McCall" wrote in message ... "Brian Gaff" wrote: :So, care to share why you would not fry things or get turbulence? Would you :split it over lots of beams or what? The beam power density for SPS is low because the beam is quite large. Care to learn to post properly? Your posting is broken two ways. 1) It is top posted. 2) Your top posting ends with the .sig break line ("-- "), which means that anyone replying to you with a decent newsreader will automatically snip off everything that has gone before unless they take special steps to prevent it. :Brian : :-- :Brian Gaff - :Note:- In order to reduce spam, any email without 'Brian Gaff' :in the display name may be lost. :Blind user, so no pictures please! :"Fred J. McCall" wrote in message .. . : "Brian Gaff" wrote: : : :Would this not fry anything flying through the beam : : No. : : :and be almost impossible to focus due to the turbulence in the beam? : : Not a problem. : : :Also you would need some form of high orbit capable shuttle to service : these : :huge orbiting devices. : : Yes, you would need the capability to service them, but you need the : capability to build them up there in the first place, so servicing : them is easy coming from that. : : -- : "Insisting on perfect safety is for people who don't have the balls to : live in the real world." : -- Mary Shafer, NASA Dryden : |
#4
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.. NSSO...Space-Based Solar Power As an Opportunity for StrategicSecurity
So far as I know, you would need "a huge connection of recievers".
The most detailed SPS proposals stipulate an array of dipole antennae, several kilometers wide. |
#5
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.. NSSO...Space-Based Solar Power As an Opportunity for StrategicSecurity
Brian Gaff wrote: Without superconducting transmission cables, there's a limit to how far the electricity can be sent, due to the electrical losses of the transmission cables. As of 1980, max range was 4,000 miles, although today's systems are shorter than that. Present systems us AC, not DC, power transmission. Even if you were to string superconducting cables along the sea bottom between the continents, you would still have to deal with them failing from time-to-time, as our present underwater communications cables do. Pat If you are using land to this extent then why not build you arrays on the ground on two sides of the globe, use dc transmission lines to send the stuff where you want it. Brian |
#6
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.. NSSO...Space-Based Solar Power As an Opportunity for Strategic Security
Actually there's a move to DC for very long power transmission these days.
"Pat Flannery" wrote in message news Brian Gaff wrote: Without superconducting transmission cables, there's a limit to how far the electricity can be sent, due to the electrical losses of the transmission cables. As of 1980, max range was 4,000 miles, although today's systems are shorter than that. Present systems us AC, not DC, power transmission. Even if you were to string superconducting cables along the sea bottom between the continents, you would still have to deal with them failing from time-to-time, as our present underwater communications cables do. |
#7
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.. NSSO...Space-Based Solar Power As an Opportunity for StrategicSecurity
On Jun 6, 6:11�pm, "Greg D. Moore \(Strider\)"
wrote: Actually there's a move to DC for very long power transmission these days.. "Pat Flannery" wrote in message \please tell more about this, how is DC better? |
#8
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.. NSSO...Space-Based Solar Power As an Opportunity for Strategic Security
Space-Based Solar Power As an Opportunity for Strategic Security Report to the Director, National Security Space Office 10 October 2007 EXECUTIVE SUMMARY Consistent with the US National Security Strategy, energy and environmental security are not just problems for America, they are critical challenges for the entire world. Expanding human populations and declining natural resources are potential sources of local and strategic conflict in the 21st Century, and many see energy scarcity as the foremost threat to national security. Conflict prevention is of particular interest to security-providing institutions such as the U.S. Department of Defense which has elevated energy and environmental security as priority issues with a mandate to proactively find and create solutions that ensure U.S. and partner strategic security is preserved. The magnitude of the looming energy and environmental problems is significant enough to warrant consideration of all options, to include revisiting a concept called Space Based Solar Power (SBSP) first invented in the United States almost 40 years ago. The basic idea is very straightforward: place very large solar arrays into continuously and intensely sunlit Earth orbit (1,366 watts/m2) , collect gigawatts of electrical energy, electromagnetically beam it to Earth, and receive it on the surface for use either as baseload power via direct connection to the existing electrical grid, conversion into manufactured synthetic hydrocarbon fuels, or as low-intensity broadcast power beamed directly to consumers. A single kilometer-wide band of geosynchronous earth orbit experiences enough solar flux in one year to nearly equal the amount of energy contained within all known recoverable conventional oil reserves on Earth today. http://science.ksc.nasa.gov/shuttle/...power_main.htm |
#9
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.. NSSO...Space-Based Solar Power As an Opportunity for StrategicSecurity
Greg D. Moore (Strider) wrote: It would be good for both minimal total national power use per generating capacity by being able to deal with heavy demand in specific areas (say, like with a heat wave in a major metropolitan area increasing air conditioner usage) and if cross-linked well could prevent the threat of a wide area suffering a major power outages like those that have occurred in the past. President Obama spoke of "digital electrical power" being a goal of his presidency...in that scenario, a loss of enough electrical power generation to meet demand results in non-critical items being shut down temporally, while critical systems continue to operate at full capacity - rather than a brown or black-out of the whole area. In a power usage spike, things like refrigerators and electric water heaters would get shut down temporally via sending coded signals through the electrical supply that powers them. BTW, one of the historic causes of underwater communication cable breaks has been Sperm Whales getting wrapped up in them and snapping the cable as they struggle to free themselves of it before they drown. This is apparently linked to their hypothesized feeding method of skimming a few feet over the surface of the continental shelf while letting their lower jaw run along the surface of the ooze trying to scoop up prey...say a hiding giant squid that has detected their sonar signals and headed for the bottom, or - somewhat surprisingly - crabs or lobsters that are crawling along the bottom, which also form part of their diet. Anyway, once the cable goes into their mouth the males can be in real trouble*, as their backward-curving teeth can get it stuck, and they may not be able to release it: http://www.uphaa.com/uploads/268/spe...-sculpture.jpg * Males have teeth only in the lower jaw. Females have no teeth in either jaw, IIRC. Pat Actually there's a move to DC for very long power transmission these days. |
#10
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.. NSSO...Space-Based Solar Power As an Opportunity for StrategicSecurity
Greg D. Moore (Strider) wrote:
Actually there's a move to DC for very long power transmission these days. Details, please. I'd like to learn more about this. -- Kevin Willoughby lid It doesn't take many trips in Air Force One to spoil you. -- Ronald Reagan |
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