A generic calculation for a 500km orbit gives you around 10 years. The
design of the starlink satellite is somewhat optimized for this in that
when it is controllable it presents a knife edge to atmospheric drag but
uncontrolled it will slowly start to tumble and degrade much faster. ~5
years at 550km without looking it up.
On Mon, Jun 15, 2020 at 2:02 PM Bill Prince <part15...@gmail.com> wrote:
> SpaceX states that at the current service altitude, the satellites will
> be-orbit in ~~ 5 years. That's one of the reasons they went with the
> lower service altitude. The original was up substantially; perhaps where
> the 10 year number came from.
>
>
> bp
> <part15sbs{at}gmail{dot}com>
>
> On 6/15/2020 11:44 AM, Robert Andrews wrote:
> > & I believe debris at that altitude deorbits even faster..
> >
> > On 06/15/2020 10:51 AM, castarritt . wrote:
> >> with a ~500km altitude, they deorbit naturally after ~10years from drag.
> >>
> >> On Mon, Jun 15, 2020 at 12:36 PM Adam Moffett <dmmoff...@gmail.com
> >> <mailto:dmmoff...@gmail.com>> wrote:
> >>
> >> Theoretically a Ubiquiti Nanostation was carrier grade and would do
> >> 150Mbps. It said so on the datasheet.
> >>
> >> Just saying maybe the small, cheap satellite will work exactly as
> >> intended and maybe it'll have a firmware crash during a sunspot and
> >> just become a piece of high velocity garbage. Even a low failure
> >> rate over many years could eventually leave a whole crapload of them
> >> buzzing around up there.
> >>
> >> .....I'm sure people smarter than me have thought of all that.
> >> Haven't they?
> >>
> >>
> >> On 6/15/2020 1:26 PM, Bill Prince wrote:
> >>>
> >>> WRT orbiting debris; it's all good until the first "accident".
> >>> Then we will see how this all shakes out. If it's bad enough, it
> >>> could cause SpaceX (and all its brethren) to relinquish all the
> >>> orbital space unless/until they provide a mitigation plan. To some
> >>> extent they are structuring their constellation to de-orbit
> >>> quickly already. Plus their sats are theoretically designed to
> >>> de-orbit on their own at end of life.
> >>>
> >>>
> >>> bp
> >>> <part15sbs{at}gmail{dot}com>
> >>>
> >>> On 6/15/2020 9:48 AM, Steve Jones wrote:
> >>>> That explains what this whole CHAZ thing is, they wanted first
> >>>> chance at some space x bandwidth.
> >>>>
> >>>> Im not a fan of star link, i think its going to cause some major
> >>>> debris field issues in space for future generations. But nobody
> >>>> can argue with the fact that it is really cool that a guy like
> >>>> musk exists who just wants to do some really cool shit, so he
> >>>> does some really cool shit. Every kid at some point in life said,
> >>>> I wanna go to mars. Hes just like, yeah, imma go to mars.
> >>>>
> >>>>
> >>>> On Sun, Jun 14, 2020 at 6:04 PM Robert <i...@avantwireless.com
> >>>> <mailto:i...@avantwireless.com>> wrote:
> >>>>
> >>>> They are already peering in Seattle, and will only be
> >>>> northern latitudes for a year according to a "insider" (
> >>>> there are hundreds if not thousands of them )....
> >>>>
> >>>>
> >>>> On 6/14/20 1:16 PM, Bill Prince wrote:
> >>>>>
> >>>>> In case anyone was watching SpaceX put up another 58
> >>>>> Starlink sats on Saturday. That puts them at almost double
> >>>>> the number they claimed to need to enable their "private
> >>>>> beta". I'm sure it's underway, plus they're running some
> >>>>> kind of test with the US military.
> >>>>>
> >>>>> All the sats except for the first batch of 60 are of the 1.0
> >>>>> design. Depending on which news blurb you read, these sats
> >>>>> all have to relay directly through ground stations, or they
> >>>>> have some limited ability to go sat-to-sat via an RF link.
> >>>>> We may find out before the end of the year.
> >>>>>
> >>>>> They also stated that they c/would start the public beta
> >>>>> when they had ~~ 800 sats in orbit. By my seat-of the pants
> >>>>> estimation, that will be another 4-1/2 launches from now;
> >>>>> maybe another 3 months. Call it September, but who knows.
> >>>>>
> >>>>> I think the biggest obstacle at this point is their pizza
> >>>>> box/flying saucer on a stick user terminal. I heard one
> >>>>> estimate that the build cost for it are in the neighborhood
> >>>>> of $1200.
> >>>>>
> >>>>> I would say by the beginning of 2021, this topic will not
> >>>>> longer be "OT".
> >>>>>
> >>>>> If you want to get notification when they can service your
> >>>>> area, go here <https://www.starlink.com/>.
> >>>>>
> >>>>>
> >>>>> --
> >>>>> bp
> >>>>> <part15sbs{at}gmail{dot}com>
> >>>>>
> >>>>>
> >>>>
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> >>>>
> >>>>
> >>>
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> >>
> >>
> >
>
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