OSSI CubeSat – Ground Station Video

Hojun Song with Hannes Gassert wearing OSSI GS Backpack

Hojun Song with Hannes Gassert wearing OSSI Ground Station Backpack and holding a Yagi antenna

Korean artist Hojun Song DS1SBO has made available videos showing the construction of his satellite OSSI.

In addition to radio communications (145 MHz uplink, 435 MHz downlink) OSSI is fitted with LED’s that can flash in Morse Code and is also flying Super-Capacitors.

The backpack ground station that he’s developed features a novel fold up antenna.

OSSI will take off on a Soyuz rocket from Baikonour in Kazakhstan this August.

Watch Setting up the OSSI Satellite Ground Station

 The OSSI ground station has been delivered to etoy. etoy is art and invests all resources in the production of more art, see http://www.etoy.com/

OSSI carries LED’s that can signal in Morse Code

Watch Building the Onboard Computer (OBC)

OSSI Art CubeSat to Launch in August http://www.uk.amsat.org/6993

Funds have been raised by selling T-shirts

Glasgow school wins CanSat launch competition

The UK’s Alpha team from Bearsden Academy in Glasgow were awarded first place in the second European CanSat Competition. 14 secondary school teams, from different ESA member states, participated in the finals of the competition at the Andøya Rocket Range in Norway.

The first prize was awarded to team Alpha, from the UK. Credits: ESA / J Makinen. (JPG, 61 Kb) CanSats are miniature simulation satellites the size of a soda can. The students had to build their own space experiments, fitting all the major subsystems including radio communications on 433/434 MHz and power into just 350ml.

The tiny CanSats were designed to separate from their rocket and conduct their missions as they descended on parachutes to the ground for recovery by the teams. They were launched in pairs from seven small Intruder rockets up to an altitude of about 1km.

Setting up an Intruder rocket for launch. Credits: ESA / J Makinen. (JPG, 68 Kb) Despite very strong winds, all of the CanSats were successfully recovered, with the exception of the Spanish one, which failed to communicate with the ground station.

The UK team received good telemetry data on 434.25 MHz, but were a little disappointed that their miniature rover deployed earlier than planned. The other teams, from Denmark, Belgium, the Netherlands, France, Spain, Austria, Czech Republic, Norway, Romania, Italian, Irish, Greek, Portugese had varying degrees of success.

Once they analysed the results of their missions, the teams were judged by a board composed of technical experts from space agencies and industry. Following the UK team in second place was the Icaromenippus 3D team from the 3rd General Lyceum of Mytilini, Strati Myrivili, Greece, with the Portuguese Azorean Shearwater team from EBS Santa Maria, Vila do Porto in the Azores in third place.

“The standard of the projects was really high and the judges were very impressed by the professional attitude of the students,” said Helen Page, the ESA CanSat Project Coordinator. “They learned an enormous amount about space science, engineering and technology, as well as developing practical skills and experiencing the excitement of a launch campaign at a world-class rocket range.”

Students from the Norwegian team Navican testing their CanSat's parachute. Credits: ESA / J Makinen. (JPG, 72 Kb) The 2012 European CanSat competition was organised by ESA’s Education Office in collaboration with the Norwegian Centre for Space-related Education (NAROM). For more details about the teams involved visit the ESA website.

The Scottish CanSat Competition was organised using the STEM Ambassador Network, a list of the Scottish schools involved and 70cm frequencies is at
http://www.fistraltraining.co.uk/index.php?option=com_content&view=article&id=126&Itemid=75

Scottish CanSat Facebook http://www.facebook.com/pages/Scottish-Cansat-Competition/136524309785701

CanSat website http://cansat.eu/

ISS Symposium 2012: A Personal Reflection

ISS Model at the 2012 ISS Symposium

Andy Thomas G0SFJ was invited to attend the ISS Symposium 2012, organised by ESA and DLR in Berlin on May 2-4. This is his personal reflection of the event. Official highlights are on their own website, Twitter, YouTube etc.

It’s impossible to single out any particular speaker, so I’d like to give only an account of some things that resonated with my own amateur experience.

Dr Julie Robinson ISS Programme Scientist at NASA - Image Credit ESA

I was very pleased to see in an early presentation by Julie Robinson the images of both “ends” of an ARISS contact, and equally it was heartening to see in the NASA “Assembly complete edition of the Reference Guide to the ISS” on page 95, Communications, a diagram in which we see  “Ham radio transmits directly to the ground”. The theme of engagement with young people was a constant throughout the Symposium with many references to them being inspired by astronaut/cosmonaut contacts, and I felt that ARISS was recognised as an important programme in this, hence my invitation described on my label , amongst the space professionals, as “Radio amateur -G0SFJ”.

Roscosmos/ TsNiiMash also referred to the Shadow experiment which relies on sending a beacon or “Mayak” signal from the ISS and received on Earth by us hams – and as a participant I talked with TsNiiMash delegates about that – and illustrated their presentations with Chiblis-M and with the MAI SSTV experiment. And the 3D journey in an adjoining salon visited the antennae on the Columbus module, both in simulation and in a real 3D picture!

Over dinner I discussed my personal view that some of us as hams would like to see more contacts of opportunity with the crew as time allowed, and I also described our work in receiving and passing on CubeSat data. There was a view expressed that CubeSats’ reliance on COTS radio equipment did not always teach much about radio, and student CubeSat projects did not always lead to the next level of bigger and more complex space equipment. I was interested in this common problem between space science and ham radio, of getting young people involved, in this age of throwaway mobile phones and laptops. I was a little surprised that some German delegates I spoke to did not know of the work of the ISEI in Leipzig and the Kosmonautenzentrum in Chemnitz, who both stimulate young people into space exploration in their own ways, and I think the people who do this good work should enjoy a higher recognition.

Many presentations demonstrated the utility of space-generated data to Earth based problems, and a good example came from the reinterpretation of data taken on salt consumption by Sigmund Jähn on an Intercosmos flight in 1978. It was both interesting and disturbing to see that bone tissue had not regrown to pre-flight levels in many long duration astronauts and cosmonauts. Visual problems were also becoming obvious.

ISS Symposium 2012 exhibition - Image credit ESA

The debate extended beyond the current use of the ISS into the future of space exploration, Waleed Abdalati giving an inspirational speech about the future. Essentially our sphere of action extends only to the asteroid belt. From the floor I asked the symposium a question of medical ethics, whether the Mars crew should be a younger or an older crew. As I recall, Chiaki Mukai immediately picked up on “Because of the radiation!” and the panel agreed with her and with psychologist Peter Suedfeld, who said that life taught many experiences in problem solving, that an older crew – by which I think we meant over about 55 – would be the ones who should go. Oleg Orlov from IBMP in Moscow concurred. Later, when Charles Bolden spoke about the US commitment to a manned flight to Mars in 2030, I fell to thinking that the US crew who would go would be currently Astronauts aged about 40. That is my personal conclusion. Bolden added in his speech “- and comes back to Earth and has lost his vision. Should we be thinking of that? I think we should be thinking of that”. There is no doubt in my mind that a manned expedition to Mars is not yet possible and Bolden said we also had to look at new ways of communications in working up to it. Interesting that in discussions over dinner, AMSAT-DL’s proposed satellite mission to Mars, the dish at Bochum and the possible use of a 30 m dish elsewhere was also recognised as a potential contributor.

It seemed evident to me, too, that the compromises inherent in the design of the ISS were beginning to show. Roscosmos emphasised their interest in flying a separate vehicle unattended by humans except at the beginning and end of its experiments, in order to take away the minimal disturbances describes by Bolden as “some astronaut jumping about on a treadmill”, but also I think attitude changes in pitch, roll and yaw, which are corrected for to an extent in experiments, are also a potential problem to zero gravity experiments such as crystal growth or metallurgy. And it was evident to me that the data on ozone depletion by a JAXA experiment SMILES only touched the edges of the problem region due to the ISS inclination of 51.6 degrees.

The “elephant in the room” was China – there is no possibility of her joining any current space treaty as a nation. However I fell to wondering whether her commercial interests might not find a locker in the new commercial availability of experimental space on board the ISS – money talks – we shall see.

I stress all the above is my personal observation, opinion and commentary, one day after the end of the conference.

The Symposium was very stimulating and enjoyable, and I’d like to thank ESA and the organisers for inviting me.

73 de Andy G0SFJ

ESA ISS Symposium Blog http://blogs.esa.int/iss-symposium2012/

ISS Symposium 2012 http://www.isssymposium2012.com/

Research Overview of the International Space Station Partnership http://blogs.esa.int/iss-symposium2012/files/2012/05/Robinson_02_May_1545.pdf

AO-27 Demo

AO-27 transmits with a power output of 0.5 W into a quarter-wavelength whip antenna. Satellites are approximately 500 miles (800 km) distant when directly overhead and over 2,000 miles (3,200 km) distant when near the horizon. For use on AO-27 with a half-wavelength whip, your receiver sensitivity at 436 MHz should be at least 0.18 uV for 12 dB SINAD, which corresponds to the approximate signal strength of AO-27 at 10 degrees elevation when your whip antenna is correctly positioned for the polarization of the incoming signal. At the horizon, AO-27’s signal strength, under similar conditions, is approximately 0.13 uV. Most modern, high-quality amateur radio transceivers will meet these specifications if designed to operate at this frequency (i.e., without modifications). Most scanners, and most radios which have had to be modified to cover 436 MHz, will not.
AO-27 transmits FM on about 436.795 MHz, plus/minus Doppler shift of up to 10 kHz on either side. Their uplink frequency is 145.850 MHz, plus/minus Doppler corrections of up to approximately 3.4 kHz.
by Ray Soifer, W2RS

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To the Moon on a Shoestring

EuroLuna

EuroLuna

Tor Fos Mortensen gave a presentation about Euroluna to the European Lunar Symposium in Berlin , April 19-20, 2012.

Euroluna are a Danish amateur team participating in the $30 million Google Lunar X PRIZE contest to be the first privately funded team to land and drive a rover on the Moon.

Their first Amateur Radio CubeSat Romit-1, fitted with an Ion motor, is planned to launch on an Interorbital Systems Neptune 30 rocket.

 

Watch Euroluna Presentation with Sound.wmv

March 2012 – Euroluna OZ9LUNA CubeSat Launch Update http://www.uk.amsat.org/5153

Twitter http://twitter.com/Euroluna

Facebook http://www.facebook.com/pages/Euroluna/337261739568

Web http://www.euroluna.dk/

Interorbital Systems http://www.interorbital.com/

Google Lunar X PRIZE http://www.googlelunarxprize.org/

TechEdSat Challenge

Space Hackers fom Lausanne, Switzerland and San Francisco, USA have been working on the TechEdSat CubeSat challenge.

TechEdSat is a 1U CubeSat that will be launched on July 21, 2012 from Tanegashima, Japan aboard the HTV-3 ISS resupply mission. TechEdSat will be among the first CubeSats to be deployed from the ISS, and is investigating the use of Plug and Play software/hardware and intersatellite communication via Iridium and Orbcomm networks.

For this challenge, space hackers must implement a command and control system, utilizing both the OrbComm and Iridium modems as uplink and downlink. The software should be modular to facilitate the easy implementation of future commands, and should be fault tolerant.

A ground segment of the software should include the ability for a laptop (or bonus points for an Apple or Android phone) to issue commands to the spacecraft over Iridium/Orbcomm. The spacecraft segment should be written for a Linux environment able to listen for commands, and have the ability to send arbitrary data packages back to the ground.

Bonus points for relaying data received from the spacecraft automatically to Twitter. Space hackers will be issued interface documentation for Iridium and OrbComm modems, and engineering development hardware for testing. This software has the potential to fly on the TechEdSat mission if completed.

Find out more at https://github.com/AVGP/CubeSatRemote/wiki