Differences between revisions 1 and 14 (spanning 13 versions)

Launching Thinsats

Thinsats are deployed in an approximately equatorial orbit, so that the ground antennas can have a fixed elevation above the horizon. An inclined m288 orbit would change elevation up and down 5 times per day.

Launch latitude											5°	30°	46°
Launch site											Kourou	KSC	Baikonur
orbit	surface	lat45	max	radius	radius	altitude	grav	sidereal	sidereal	launch
name	period	ping	latitude					velocity	period	velocity	insertion velocity
	min	ms	degrees	km	earths	km	m/s²	m/s	m/s	m/s	m/s	m/s	m/s
LEO	97	--	17.29	6678	1.05	300	8.94	7726	5431	7531	676	3847	6003
m288	288	63	60.17	12789	2.01	6411	2.44	5583	14393	8667	1118	2726	4072
m360	360	73	63.87	14441	2.26	8063	1.91	5254	17271	8846	1211	2592	4511
m480	480	87	67.70	16756	2.63	10378	1.42	4877	21585	9050	1308	2451	3516
m720	720	110	71.74	20295	3.18	13917	0.97	4432	28774	9287	1404	2297	3188
GEO	fixed	253	81.33	42164	6.61	35786	0.22	3075	86164	9954	1511	1860	2281

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Thinsats peeled off the top of a cylinder of thinsats. The thickness is greatly exaggerated. There will actually be thousands of thinsats in a stack this tall, at about the same spacing as sheets of paper in a ream of paper.

Mechanically, the stack resembles a solid cylinder of silicon with three adjoining cylinders of glass. The heights of glass and silicon layers must be well matched, and the thermal expansion differences between silicon and glass accommodated, to prevent mechanical strain from vibration during launch, and thermal strain when the cylinders cool

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-  ⇤ ← Revision 1 as of 2009-02-22 06:51:05 → 
  Size: 487
  Editor: KeithLofstrom
  Comment:
+   ← Revision 14 as of 2011-04-15 00:31:54 → ⇥
  Size: 2491
  Editor: KeithLofstrom
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
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-= Launching Server-sats =
+= Launching Thinsats =
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-||  || Server-sats peeled off the top of a cylinder of server-sats <<BR>> Mechanically, the stack resembles a solid cylinder of silicon with three adjoining cylinders of glass.  The heights of glass and silicon layers must be well matched, and the thermal expansion differences between silicon and glass accommodated, to prevent mechanical strain from vibration during launch, and thermal strain when the cylinders cool ||
+Thinsats are deployed in an approximately equatorial orbit, so that the ground antennas can have a fixed elevation above the horizon.  An inclined m288 orbit would change elevation up and down 5 times per day.
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+||<-11)>                                                                                       Launch latitude || 5&deg; || 30&deg;|| 46&deg;||
||<-11)>                                                                                       Launch site     || Kourou || KSC    ||Baikonur||
|| orbit || surface || lat45 || max    ||radius||radius|| altitude || grav || sidereal || sidereal || launch   ||<-3:>                       ||
|| name  || period  ||  ping ||latitude||      ||      ||          ||      || velocity || period   || velocity ||<-3:>  insertion velocity   ||
||       ||  min    ||   ms  || degrees||  km  ||earths||  km      ||m/s^2^||   m/s    ||   m/s    ||   m/s    ||    m/s ||    m/s ||    m/s ||
||  LEO  ||  97     ||   --  ||  17.29 ||  6678|| 1.05 ||      300 || 8.94 ||   7726   ||  5431    ||   7531   ||    676 ||   3847 ||   6003 ||
|| m288  || 288     ||   63  ||  60.17 || 12789|| 2.01 ||     6411 || 2.44 ||   5583   || 14393    ||   8667   ||   1118 ||   2726 ||   4072 ||
|| m360  || 360     ||   73  ||  63.87 || 14441|| 2.26 ||     8063 || 1.91 ||   5254   || 17271    ||   8846   ||   1211 ||   2592 ||   4511 ||
|| m480  || 480     ||   87  ||  67.70 || 16756|| 2.63 ||    10378 || 1.42 ||   4877   || 21585    ||   9050   ||   1308 ||   2451 ||   3516 ||
|| m720  || 720     ||  110  ||  71.74 || 20295|| 3.18 ||    13917 || 0.97 ||   4432   || 28774    ||   9287   ||   1404 ||   2297 ||   3188 ||
||  GEO  || fixed   ||  253  ||  81.33 || 42164|| 6.61 ||    35786 || 0.22 ||   3075   || 86164    ||   9954   ||   1511 ||   1860 ||   2281 ||
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+|| {{ attachment:serverbus.png }} || Thinsats peeled off the top of a cylinder of thinsats.  The thickness is greatly exaggerated.  There will actually be thousands of thinsats in a stack this tall, at about the same spacing as sheets of paper in a ream of paper. <<BR>><<BR>> Mechanically, the stack resembles a solid cylinder of silicon with three adjoining cylinders of glass.  The heights of glass and silicon layers must be well matched, and the thermal expansion differences between silicon and glass accommodated, to prevent mechanical strain from vibration during launch, and thermal strain when the cylinders cool ||
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+MORE LATER

Diff for "LaunchingV01"

Launching Thinsats