[ExI] Space Project (power satellites)

[Adrian Tymes]

On Fri, Aug 7, 2020 at 1:50 PM Dan TheBookMan via extropy-chat <
extropy-chat at lists.extropy.org> wrote:

> On Aug 7, 2020, at 1:35 PM, Adrian Tymes via extropy-chat <
> extropy-chat at lists.extropy.org> wrote:
>
> On Fri, Aug 7, 2020 at 12:58 PM Dan TheBookMan via extropy-chat <
> extropy-chat at lists.extropy.org> wrote:
>
>> On Aug 7, 2020, at 12:14 PM, Adrian Tymes via extropy-chat <
>> extropy-chat at lists.extropy.org> wrote:
>>
>> On Fri, Aug 7, 2020 at 10:59 AM Keith Henson via extropy-chat <
>> extropy-chat at lists.extropy.org> wrote:
>>
>>> If we build power satellites in LEO and try to fly them out to GEO,
>>> they get hit with space junk about 40 times.  (Excel spreadsheet on
>>> request.)
>>>
>>
>> Data source, please?  That a single satellite going LEO->GEO will on
>> average be hit 40 times seems way higher than is supported by the data I am
>> aware of - which is that most satellites going from LEO to GEO get hit zero
>> times.
>>
>>
>> Bigger target though. SSPSs are really big compared to even the biggest
>> satellites, no?
>>
>
> Not nearly big enough to get hit an average of even once per trip, let
> alone 40, if Keith means the designs I think he means.
>
> Especially if the trips are plotted to avoid tracked debris; I was
> literally just yesterday looking at the US government's latest service to
> check such trajectories and confirm they'll be free of known debris, and
> they have access to good enough radar to track almost anything large enough
> to matter.  (Acknowledging that "large enough" is very small, given orbital
> velocities.  They still track it.)
>
>
> There’s also flight time, but you’re likely right. Size and duration could
> up the number above the average LEO to GEO flight, but planning and
> avoidance could lower that. And given that the investment would be much
> much larger, I imagine even more effort would be put into reducing the
> likelihood.
>

Given how often people question if such tracking is possible, I suppose I
should bolster my point with a link to that service, to prove that it
actually exists and is available for anyone (or at least, not just US
government people) to use: https://www.space-track.org/documentation#/faq .
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