Hello all,
Several of us AMSATers in North Texas will again be representing AMSAT at
the annual "Moon Day" at the frontiers of Flight Museum at Dallas Love Field
this coming July 16. "Moon Day" is a celebration of spaceflight
past/present and future and is also a very large STEM fair with exhibits
from many different scientific and Engineering organizations. Many young
people including Boy and Girl Scouts are in attendance.
Since there is such a large youth component to this event, I have been
looking for some fun ways to demonstrate satellites and orbital mechanics to
the people who drop by the booth/table. There is a special STEM patch that
they can earn by visiting different displays and asking questions/filling
out a worksheet. I am looking for simple but creative/fun ways to
demonstrate orbital mechanics and also how a satellite like our Fox birds
work. I plan to build a big poster with images of different types of
orbits, and have already been given an idea on how to demonstrate the
different between a geostationary/synchronous orbit and a LEO but would like
some more ideas.
If any of you have done some similar outreaches and would like to share
ideas, please reply on list or off. I would appreciate it much.
Tom Schuessler, N5HYP
Want to put a smile on a satellite? When you make your purchases from
Amazon, you can select a charity and Amazon will donate .5% of a
qualified purchase towards your selected charity. AMSAT (Radio Amateur
Satellite Corporation) is registered with Amazon Smile and you can
select it as your preferred charity which in turn will put a smile on
our satellite efforts :-)
Once you have selected your Amazon Smile charity, when you go to
amazon.com, it will remind you to go to smile.amazon.com. However, you
can put everything you want in your cart at the original amazon.com
site, then leave the site and go to smile.amazon.com and all your items
will still be in your cart and make the purchase there. Or, just go to
smile.amazon.com all the time. Your choice, only thing is if you forgot
to pay at smile.amazon.com, AMSAT gets a goose egg instead of help
towards a new satellite.
Remember, Smile dot amazon.com and select Radio Amateur Satellite
Corporation as your charity of choice.
73...bruce
--
Bruce Paige, KK5DO
AMSAT Director Contests and Awards
AMSAT Board Alternate 2015-2016
ARRL Awards Field Checker (WAS, 5BWAS, VUCC), VE
Houston AMSAT Net - Wed 0200z on Echolink - Conference *AMSAT*
Also live streaming MP3 at http://www.amsatnet.com
Podcast at http://www.amsatnet.com/podcast.xml or iTunes
Latest satellite news on the ARRL Audio News
http://www.arrl.org
AMSAT on Twitter http://www.twitter.com/amsat
Our kid demo of orbits uses a large globe. We hang a small golfball
satellite on a string from the ceiling. There are several demos we like:
1) Center the globe under the string and the golf ball sticks to the
globe. (gravity)
2) Try to push the ball in a circle. If you get a perfect circle or a big
enough one, you will have an orbit and not hit the earth.
3) If you have too much vector "up" in any one direction (not circular)
then on the next pass it crashes into earth.. (all orbits are elipses and
you don't want part of your ellipse to run into the earth.
4) Now move the earth about a radius or diameter away from under the
string. Now try to launch an elliptical orbit where the ball just grazes
the earth at perigee and goes way out at apogee. You can get a nice
Molnya orbit.
5) For GEO transfer, we had a mark on the floor and a mark out 5 earth
radii where we had a little tiny bowling pin on a pedestal. Here the
object was to launch the ball from behind the earth so that it would go
out and intersect the bowling pin and knock it off. Thus demonstrating a
transfer orbit to GEO.
No, this is not the same physics of a central force (gravity) driving
Keplers laws, but it is a perfect demo of circular and elliptical paths.
For example in this case, the orbital speed is the same at perigee and
apogee (non Keplerian), but still it is an elliptical path with the earth
at one foci...
Kids love it. Especially #5 is a real challenge. And even #1 is hard if
you are trying to orbit only 1 inch above a 24" diameter earth globe.
Do not use an expensive valuable globe (from your wife for example)
because there will be LOTS of crashes from bad "orbits"...
Bob, WB4APR
-----Original Message-----
From: AMSAT-BB [mailto:[email protected]] On Behalf Of
skristof(a)etczone.com
Sent: Thursday, February 25, 2016 9:17 AM
To: Tom Schuessler
Cc: amsat-bb(a)amsat.org
Subject: Re: [amsat-bb] simple ways to demonstrate orbital mechanics.
Don't forget that you can download data from AO-73 off of the amsat-uk
website. Their data is great for looking at temperature increase and
decrease, spin rate, voltage changes in the solar panels as the satellite
goes between light and dark, and how the battery discharges during the
dark periods. Easy access and good teaching material.
Steve AI9IN
On 2016-02-24 08:47, Tom Schuessler wrote:
> Hello all,
>
> Several of us AMSATers in North Texas will again be representing AMSAT
> at the annual "Moon Day" at the frontiers of Flight Museum at Dallas
> Love Field this coming July 16. "Moon Day" is a celebration of
> spaceflight past/present and future and is also a very large STEM fair
> with exhibits from many different scientific and Engineering
> organizations. Many young people including Boy and Girl Scouts are in
attendance.
>
> Since there is such a large youth component to this event, I have been
> looking for some fun ways to demonstrate satellites and orbital
> mechanics to the people who drop by the booth/table. There is a
> special STEM patch that they can earn by visiting different displays
> and asking questions/filling out a worksheet. I am looking for simple
> but creative/fun ways to demonstrate orbital mechanics and also how a
> satellite like our Fox birds work. I plan to build a big poster with
> images of different types of orbits, and have already been given an
> idea on how to demonstrate the different between a
> geostationary/synchronous orbit and a LEO but would like some more
ideas.
>
> If any of you have done some similar outreaches and would like to
> share ideas, please reply on list or off. I would appreciate it much.
>
> Tom Schuessler, N5HYP
>
> _______________________________________________
> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect
the official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite
program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
> [1]
Links:
------
[1] http://www.amsat.org/mailman/listinfo/amsat-bb
_______________________________________________
Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to
all interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
I have for sale an Icom 821H 2m/70cm all mode satellite radio. This rig is
working fine on UHF (35 to 40 watts out) but is putting out lower power on
2m-10 watts on FM/CW and 3 watts or so on SSB. It has the tone encoder
built in, built in keyer, and it covers 144-148mhz and 430-450mhz so you
can use it on FM repeaters as well as the SSB/CW portions of the band.
Not sure why it is putting out low power on 2m, but it is an excellent UHF
all mode radio, and you can use it with an amp on 2m if you want also. Does
dual receive, and full duplex for satellite operations.
It is in good physical condition and comes with a mic and power cord. I am
asking $350 shipped for it and can take paypal/check/MO.
73 John AF5CC
Got my first telemetry from AO-85 this morning. If you scroll way down
to the bottom of the telemetry leaderboard you will find AI9IN!
A very large (can I say "YUGE") thank you to everyone who answered all
my questions about dongles, SDR, virtual audio cables, and downloading
ExtIO!
I couldn't have done it without help from my ham radio satellite
colleagues. AMSAT is a great organization to be part of.
Steve AI9IN
EM79ji
skristof(a)etczone.com
I purchased an RTL-SDR dongle and now I'm trying to follow the
directions for downloading HDSDR software (instructions on the RTL-SDR
website). It all goes fine until I get to:
"Download ExtIO_RTL2832.DLL from
https://app.box.com/s/7tpiy8r6qo2bbhdxtt4k"
When I click on the link it takes me to the website, but the
ExtIO_RTL2832.dll won't download.
Any help would be very much appreciated.
I'm running Windows 7 Professional with Service Pack 1.
Steve AI9IN
Upcoming ARISS Contact Schedule as of 2016-02-24 23:30 UTC
Quick list of scheduled contacts and events:
Istituto Sobrero, Casale Monferrato, Italy, direct via IK1SLD
The ISS callsign is presently scheduled to be OR4ISS
The scheduled astronaut is Tim Kopra KE5UDN
Contact is a go for: Thu 2016-02-25 09:08:04 UTC 37 deg (***)
Norwich Schools, Norwich/East Anglia, UK, direct via GB2CNS
The ISS callsign is presently scheduled to be GB1SS
The scheduled astronaut is Timothy Peake KG5BVI
Contact is a go for: Fri 2016-02-26 14:40:43 UTC 30 deg (***)
Gesamtschule Leverkusen Schlebusch, Leverkusen, Germany, direct via DLØIL
The ISS callsign is presently scheduled to be OR4ISS
The scheduled astronaut is Timothy Peake KG5BVI
Contact is a go for: Mon 2016-02-29 12:05:58 UTC 78 deg
National Urban Alliance for Effective Education (NUA), Syosset, New York,
telebridge VK5ZAI
The ISS callsign is presently scheduled to be NA1SS
The scheduled astronaut is Tim Kopra KE5UDN
Contact is a go for: Tue 2016-03-01 16:45:18 UTC 53 deg
Powys Secondary Schools, Mid Wales, UK, direct via GB4PCS
The ISS callsign is presently scheduled to be GB1SS
The scheduled astronaut is Timothy Peake KG5BVI
Contact is a go for: Sat 2016-03-05 10:55:19 UTC 59 deg
****************************************************************************
**
The next window to submit a proposal for an upcoming contact is now open.
The window is open from 2016-02-15 to 2016-04-15 and would be for contacts
between 2017-01-01 and 2017-06-30.
Check out the ARISS website http://www.ariss.org/ or the ARRL website
http://www.arrl.org/hosting-an-ariss-contact for full details.
****************************************************************************
**
ARISS is always glad to receive listener reports for the above contacts.
ARISS thanks everyone in advance for their assistance. Feel free to send
your reports to aj9n(a)amsat.org or aj9n(a)aol.com.
****************************************************************************
***
All ARISS contacts are made via the Ericsson radio unless otherwise noted.
****************************************************************************
***
Several of you have sent me emails asking about the RAC ARISS website and
not being able to get in. That has now been changed to
http://www.ariss.org/
Note that there are links to other ARISS websites from this site.
****************************************************************************
Looking for something new to do? How about receiving DATV from the ISS?
If interested, then please go to the ARISS-EU website for complete
details. Look for the buttons indicating Ham Video.
http://www.ariss-eu.org/
If you need some assistance, ARISS mentor Kerry N6IZW, might be able to
provide some insight. Contact Kerry at kbanke(a)sbcglobal.net
****************************************************************************
ARISS congratulations the following mentors who have now mentored over 100
schools:
Gaston ON4WF with 121
Satoshi 7M3TJZ with 116
Francesco IKØWGF with 116
****************************************************************************
The webpages listed below were all reviewed for accuracy. Out of date
webpages were removed and new ones have been added. If there are
additional
ARISS websites I need to know about, please let me know.
Note, all times are approximate. It is recommended that you do your own
orbital prediction or start listening about 10 minutes before the listed
time.
All dates and times listed follow International Standard ISO 8061 date
and
time format YYYY-MM-DD HH:MM:SS
The complete schedule page has been updated as of 2016-02-24 23:30 UTC.
(***)
Here you will find a listing of all scheduled school contacts, and
questions, other ISS related websites, IRLP and Echolink websites, and
instructions for any contact that may be streamed live.
http://www.amsat.org/amsat/ariss/news/arissnews.rtf
Total number of ARISS ISS to earth school events is 1027.
Each school counts as 1 event.
Total number of ARISS ISS to earth school contacts is 992.
Each contact may have multiple schools sharing the same time slot.
Total number of ARISS supported terrestrial contacts is 46.
A complete year by year breakdown of the contacts may be found in the
file.
http://www.amsat.org/amsat/ariss/news/arissnews.rtf
Please feel free to contact me if more detailed statistics are needed.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
The following US states and entities have never had an ARISS contact:
Arkansas, Delaware, North Dakota, Rhode Island, South Dakota,
Wyoming, American Samoa, Guam, Northern Marianas Islands, and the Virgin
Islands.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
QSL information may be found at:
http://www.ariss.org/qsl-cards.html
ISS callsigns: DPØISS, IRØISS, NA1SS, OR4ISS, RSØISS
****************************************************************************
The successful school list has been updated as of 2016-02-24 07:30 UTC.
http://www.amsat.org/amsat/ariss/news/Successful_ARISS_schools.rtf
Frequency chart for packet, voice, and crossband repeater modes showing
Doppler correction as of 2005-07-29 04:00 UTC
http://www.amsat.org/amsat/ariss/news/ISS_frequencies_and_Doppler_correction
.rtf
Listing of ARISS related magazine articles as of 2006-07-10 03:30 UTC.
http://www.amsat.org/amsat/ariss/news/ARISS_magazine_articles.rtf
Check out the Zoho reports of the ARISS contacts
https://reports.zoho.com/ZDBDataSheetView.cc?DBID=412218000000020415
****************************************************************************
Exp. 43/44 on orbit
Scott Kelly
Mikhail Kornienko RN3BF
Exp. 45 on orbit
Sergey Volkov RU3DIS
Exp. 46 on orbit
Tim Kopra KE5UDN
Timothy Peake KG5BVI
Yuri Malenchenko RK3DUP
****************************************************************************
73,
Charlie Sufana AJ9N
One of the ARISS operation team mentors
