Hi,
YAOGAN 8 traveling faster could be due to possible initial orbit
corrections and maneuvering that includes minor correction of
injection velocity (delta V). The drag do influence even at
geo-transfer and geo-synchronous orbits.
73 de
Mani, VU2WMY
Secretary & Station-In-Charge
Upagrah Amateur Radio Club VU2URC
ISRO Satellite Centre
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Quoting Alexandru Csete <al...@phys.au.dk>:
> The influence of the drag force also depends on the mass since F=m*a,
> so the same drag force will cause less deceleration on a heavier
> satellite. You have to put this together with F=pressure*surface_area
> to take both the size and the mass of the satellite into account.
>
> By the way, is there any significant atmospheric drag at 1200 km
> altitude?
>
> 73
> Alex OZ9AEC
>
>
> On Wed, 16 Dec 2009 18:56:20 +0000
> Nigel Gunn G8IFF/W8IFF <ni...@ngunn.net> wrote:
>
>> OK, I'll revise my earlier question and suggest a reply.
>>
>> The physically larger satellite will have more atmospheric drag which
>> will spiral it into a lower orbit. The lower orbit, the higher the
>> velocity and thereforeit crosses your horizon earlier.
>>
>> Nigel Gunn G8IFF/W8IFF wrote:
>>
>> >
>> > Is this correct that the higher mass satellite travels faster than
>> > the lower mass of XW?
>> >
>>
>>
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