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CX2SA > SATDIG 01.06.08 22:12l 313 Lines 11588 Bytes #999 (0) @ WW
BID : 7286_CX2SA
Read: GUEST
Subj: AMSAT-BB-digest V3 278
Path: IZ3LSV<IW0GPS<IQ0LT<IK2XDE<DB0RES<ON0AR<7M3TJZ<CT1EJC<PY1AYH<CX2SA
Sent: 080601/2008Z @:CX2SA.LAV.URY.SA #:7286 [Minas] FBB7.00e $:7286_CX2SA
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: New satellies / Shuttle question (SV1BSX)
2. Official document about Yubileiny (andy thomas)
3. Possible telemetry system DOKA-B for Yubilieiny (andy thomas)
4. Re: Official document about Yubileiny (Peter Guelzow)
----------------------------------------------------------------------
Message: 1
Date: Sun, 1 Jun 2008 17:59:52 +0300
From: "SV1BSX" <sv1bsx(AT)yahoo.gr>
Subject: [amsat-bb] Re: New satellies / Shuttle question
To: <G0MRF(AT)aol.com>
Cc: amsat-bb(AT)amsat.org
Message-ID: <001501c8c3f8$28c87270$0b09a8c0(AT)zeus>
Content-Type: text/plain; format=flowed; charset="windows-1253";
reply-type=original
----- Original Message -----
From: <G0MRF(AT)aol.com>
>
>
> Taking the topic forward a little.....How about Ultra capacitors as an
> alternative storage medium?
> I haven't checked the following, but if it's incorrect I know I can expect
> a
> reply from someone on the BB.
> Ultracapacitors are available at e.g. 470 Farads at 2.5V
>If we take 3 in series we have an energy store with useful voltage.
>
>David
<snap>
David,
I had some experience a few years ago with SuperCaps, I was on R&D
department
about SOLAS equipments (Safety Of Life At Sea).
Well, these Caps are extremely unstable. They are the worst kind of
capacitors
that I have seen. Very quick they lost a significant part of capacity and
they have
also leak in short time, comparing with the usual electrolytic capacitors.
Another problem is the corrosion, probably due to very "active" chemical
inside.
However this idea sounds like a great challenge also to me, but can you
trust a
satellite on these Caps?
Especially in case which there is not just one - but 3 Caps in series !
I think - the worst scenario with unreliable Caps...!
73, Mak SV1BSX
------------------------------
Message: 2
Date: Sun, 1 Jun 2008 15:50:03 +0000 (GMT)
From: andy thomas <andythomasmail(AT)yahoo.co.uk>
Subject: [amsat-bb] Official document about Yubileiny
To: amsat <amsat-bb(AT)amsat.org>
Message-ID: <322562.98772.qm(AT)web25606.mail.ukl.yahoo.com>
Content-Type: text/plain; charset=utf-8
I have the following from Moscow (have slightly altered the Babel Fish!!):
"Small automatic spacecraft ?Anniversary?
On May 23, 2008 from the Russian state test spaceport ?[Plesetsk]? carrier
rocket ?Rokot? with the starting block ?Breeze- KM? in orbit of artificial
earth satellites brought out four automatic spacecraft, three sequential
purposeful apparatuses of a series "Kosmos" even one following, small
automatic spacecraft ?anniversary?.
According to the information of the control center of the space troops
injecting satellite into orbit passed regularly in accordance with the
cyclogram of flight [RN] ?Rokot?. Separation of automatic spacecraft from [RN]
occurred above Europe in the zone of radio visibility from the territory of
Russia.
According to the communications of the services of control with the automatic
spacecraft stable command- telemetric communications is established and is
supported.
The average orbit altitude of this group of satellites is 1500 km, the
inclination of 82,5 , the period of revolution of 115,98 minutes.
Satellite ?anniversary? is? multiprofile experimental automatic spacecraft, it
enters into its tasks:
? the implementation of current affairs program on the history of cosmonautics
and the propaganda of its achievements in accordance with the plan of the
measures, dedicated to the celebration of the important dates of the history
of national and world cosmonautics: - 100- anniversary from the birthday of
[S].[P]. Korolev, 150- anniversary from the birthday of [K].[E]. Tsiolkovskiy
and 50th anniversary of the launch of first in the world ISZ (artificial earth
satellite);
? solution of educational scientific research and experimental problems,
including the guarantee of conditions for using the information of small
automatic spacecraft by leading VUZ (Institute of Higher Education) of Russia
for training- educational purposes;
? the flight tests of the base platform of small size automatic spacecraft for
the operational scientific research and experimental works and its
qualification;
? finalizing the technology of following removal small KA by carrier rocket
?Rokot?;
? further finalizing of the technology of the use of a navigation aid of the
users of space navigation system GLONASS for the space systems, the evaluation
of the precision characteristics of trajectory measurements;
? the flying qualification of the promising instruments of solar-oriented
attitude and Earth;
? obtaining the data about the emissions of the Earth in the infrared
wavelength range, the analysis of the time-spatial emissions of the day and
night Earth's atmosphere in the visible spectral range;
? the evaluation of the influence of the factors of the outer space on the
service lives of electronic devices;
? the acquaintance of the students of the elder policies of VUZ with the laws
of motion KA, the methods of control, analysis of telemetric and trajectory
information;
? the study of processes and finalizing the methods of evaluating the
parameters of gravitational and magnetic orientation KA;
? testing and experiments in the region of amateur satellite radio
communication.
Beginning to the creation of satellite ?anniversary? placed the joint
resolution of the federal Space Agency, space troops MO RF and central advice
ROSTO (DOSAAF (All-Union Voluntary Society for Assistance to the Army, Air
Force, and Navy)) about the creation and the starting in the honor of the
anniversary of the Space Age of anniversary radio amateur's Earth satellite.
The creation of automatic spacecraft was charged to the research laboratory of
aerospace technology ([NILAKT], at the city of Kaluga). For the coordination
of works on the project anniversary KA was created the public commission, into
composition of which entered the representatives Of [roskosmosa], space
troops, ROSTO, [RVSN], Russian Academy of Sciences, MAI, association of
cosmonautics of Russia and union of the veterans of the space troops. After
study and examination of several versions of injection into orbit of
anniversary satellite was accepted the diagram of its starting [RN] ?Rokot?
simultaneously with three KA ?cosmos?.
On the request of public commission to the works by the adaptation KA to the
carrier and the basic composition of group KA was connected joint stock
company ?information satellite systems? [im]. of academician
[M].[F].[Reshetnev], city of Zheleznogorosk, Krasnoyarskiy Kray.
[Reshetnevtsy] were connected also to the works on orientation KA and along
its solar batteries. Satellite was created on ?public principles?, special
financing it was not provided for, development, production, injection into
orbit they were executed due to its own means of organizations - the co-
executors of project. All works are carried out within the very compressed
periods.
The preparation of satellite ?anniversary? for the launching at the spaceport
was carried out by the specialists of joint stock company ?of ISS? [im]. of
academician [M].[F].[Reshetnev] and by specialists [NILAKT]. The starting of
the group of satellites is provide ford by the specialists of joint stock
company ?of ISS? [im]. of academician [M].[F].[Reshetnev], by the specialists
of joint stock company [im]. Of [khrunicheva] and by the military specialists
of spaceport ?[Plesetsk]?. The weight of satellite 44 kg. its construction is
hexahedral prism with a height of 800 mm with the face 300 mm. on the lateral
and face sides they are placed solar battery cells.
The basic composition of onboard equipment is placed in the nonhermetic
instrument compartment of satellite. The elements of orientation system,
transverse rods with the beams, receiving and transmitting antennas, and also
sensors of scientific gear are placed on the outer sides of housing KA.
Control of satellite is accomplished ground-based by a complex ?DOKA- N? into
the city of Kaluga.
Works with the separate scientific instruments conducts the student instrument
board, established by specialists [NILAKT] at the Siberian state aerospace
university in the city of Krasnoyarsk. The signals of the presence of
satellite ?anniversary?, sonic communications and video slides it is possible
to assume at frequencies 435,215 MHz and 435,315 MHz. Kaluga,
Papkov, A.P. "
I have changed from the Babel Fish version : {g} to "city of", POCTO to ROSTO
(not INCREASE), and POKOT to ROKOT not "roar".
73 de andy G0SFJ
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------------------------------
Message: 3
Date: Sun, 1 Jun 2008 15:34:47 +0000 (GMT)
From: andy thomas <andythomasmail(AT)yahoo.co.uk>
Subject: [amsat-bb] Possible telemetry system DOKA-B for Yubilieiny
To: amsat <amsat-bb(AT)AMSAT.Org>
Cc: john heath <g7hia(AT)btinternet.com>
Message-ID: <224090.68017.qm(AT)web25606.mail.ukl.yahoo.com>
Content-Type: text/plain; charset=utf-8
I'm pretty certain I have found some diagrams about the telemetry control of
the YUBILEINY satellite:
http://microsat.sm.bmstu.ru/pic/schemebig.gif
shows the command station at Kaluga
and
http://microsat.sm.bmstu.ru/pic/Doka-b.gif
shows the "DOKA-B" telemetry command system.
The documents are on a website deveoted to the Baumanets microsatellite but as
the mission is very similar (similar scientific- educational project) I think
it's likely that this is the control system used.
Note the modem interface within the radio section of DOKA-B and interfacing
directly into the main board.
I looked at the screenshot from "Cool edit" and it struckme thatthere was a
tone (synch?) at 24 kHz throughout, with 5 frames per second at what looked to
me as 8 frequency separated tones per frame. Does that give 5*8 = 40 bits per
second? and does the 8 bits imply a direct serial transfer (8N1, etc) ?
So I'm thinking now that it isn't WEFAX/APT and could be a direct serial
portinto the onboard PC.
73 de andy G0SFJ
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------------------------------
Message: 4
Date: Sun, 01 Jun 2008 19:23:58 +0200
From: Peter Guelzow <peter.guelzow(AT)kourou.de>
Subject: [amsat-bb] Re: Official document about Yubileiny
To: andythomasmail(AT)yahoo.co.uk
Cc: amsat <amsat-bb(AT)amsat.org>
Message-ID: <4842DB2E.4030600(AT)kourou.de>
Content-Type: text/plain; charset=UTF-8; format=flowed
Hi Andy,
just back from our AMSAT-DL satellite symposium and AGM...
andy thomas wrote:
> I have the following from Moscow (have slightly altered the Babel Fish!!):
>
......
> Papkov, A.P. "
>
Thanks a lot for this hint !!!
RS-14 , OSCAR-21 with AMSAT-DL's RUDAK-2 was build in Kaluga by a team
under the direction of Aleksander Papkov, RA3XBU.
I met him personally in Kaluga, together with Leonid Labutin,
ex-UA3CR...
I have already asked my friends from AMSAT-R, but have no answer yet.
But at that time I did not knew that RA3XBU is again involved and this
should help now indeed...
best 73s Peter DB2OS
------------------------------
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End of AMSAT-BB Digest, Vol 3, Issue 278
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