Re: Starlink: RCS and dimensions

From: Leo Barhorst via Seesat-l <seesat-l_at_satobs.org>
Date: Tue, 21 Apr 2020 17:59:10 +0200
Oke, Jonathan, thanks.

Must have to do with the perspective of the picture orI mad a calculating
error.

I forgot to add that the 30 sats are in 6,90 in height, so 0.23 per sat.
That leaves max 0.15 cm  for the folded panel in between the sats.

Leo

Op di 21 apr. 2020 om 17:54 schreef Jonathan McDowell <planet4589_at_gmail.com
>:

> However, SpaceX informed me directly that the solar array is 8.1 x 2.8
> metres.
>
> On Tue, 21 Apr 2020 at 11:42, Leo Barhorst via Seesat-l <
> seesat-l_at_satobs.org> wrote:
>
>> Hello hehehe,
>>
>> Seet the website of SpaceX at spacex.com.
>> There you can find all kind of info about the Starlinks.
>>
>> Also a picture of the Starlink stack enclosed in one half of the fairing.
>>
>> I used this picture and the dimensions of the fairing in the Falcon 9
>> handbook
>> to calculate the dimensions of the starlink sats.
>>
>> The fairing has an outer diameter of 5,20 m and height of 6,90 m before
>> the
>> nosecone starts.
>> The skin with the honeycomb is 0,27 m.
>> That leaves for the sats a space of 4.66 m.
>> The Starlinks are stacked 2 side by side and 15 layers high.
>>
>> In this space fits a rectangle of 3,30 x 3.30 m, consisting of 2 sats.
>> So the length of the flatpanel sat is max 3.30 and de width max 1.65
>> Knowing these dimensions the height  of the sat can be estimated and is
>> around 0.08 m.
>>
>> From an artist impression on the SpaceX site with the sats in orbit the
>> length of the solar
>> panel is between 15-16 m.
>>
>> I hope my explanation is clear to you.
>>
>> I don.t have info on the RCS snh reflective radiowise they are.
>> Perhaps some obdervers that do radio obs of sats can answer this.
>>
>> Regards,
>> Leo
>>
>>
>> Op di 21 apr. 2020 om 14:54 schreef hehehe--- via Seesat-l <
>> seesat-l_at_satobs.org>:
>>
>> > Hi!
>> >
>> > How big are these starlink satellites, and how reflective radiowise?
>> > Is there a known RCS (radar cross section)?
>> > Where can I see detailed photos of a starlink sat?
>> >
>> > Greetings!
>> >
>> >
>> > _______________________________________________
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>> >
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Received on Tue Apr 21 2020 - 11:00:04 UTC

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