[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]

Re: Question on ANDE/RAFT/NMARS/FCAL



Thanks Bob for the Physics refresher, it's appreciated!

tnx es 73

Bruce -W3NJ


In a message dated 7/23/2007 09:21:30 Central Daylight Time, 
bruninga@usna.edu writes:


> 
> 
> > Since NMARS and RAFT have both re-entered the 
> > atmosphere, how is it FCAL and ANDE are still 
> > in orbit since they were lauched at the same 
> > time?
> 
> ANDE was a perfect sphere with no external drag components and
> weighed 50 kg.  RAFT and NMARS  were less aerodynamic cubes and
> both had extrnal whip antnenas an hopefully a 4 foot long wire
> HF antenna (though we think they were not fully deployed)...
> 
> So ANDE's mass is 15 times as much but it's cross section area
> is only 10 times larger and much smoother.
> 
> 

<BR><BR>**************************************<BR> Get a sneak peek of the all-new AOL at 
http://discover.aol.com/memed/aolcom30tour</HTML>
_______________________________________________
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb



AMSAT Top AMSAT Home