Integrated Solar Panel Antennas for Cubesats

5GHz Fabricated Antenna

A paper by Mahmoud N. Mahmoud presents an innovative solution for small satellite antennas by integrating slot antennas and solar cells on the same panel to save small satellite surface real estate and to replace deployed wire antennas for certain operational frequencies.

The two main advantages of the proposed antenna are:
1) the antenna does not require an expensive deployment mechanism that is required by dipole antennas;
2) the antenna does not occupy as much valuable surface real estate as patch antennas.

The antenna design is based on using the spacing between the solar cells to etch slots in these spaces to create radiating elements for 2.4 or 5 GHz.

Read the paper at http://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1738&context=etd

Flexible Solar Panel Deployment for CubeSat

Senior design project to incorporate flexible solar panels in a CubeSat. The mechanism consists of a rack and gear spring loaded mechanism to release the rolled up solar panel.

Watch Flexible Solar Panel Deployment for CubeSat

Fox-1 Project Educational Goals Align With NASA ELaNa Requirements

Project ELaNa, NASA’s “Educational Launch of NanoSat” managed by the Launch Services Program at the Kennedy Space Center, announced on February 10 that the AMSAT Fox-1 cubesat has been selected to join the program. AMSAT will work with NASA in a collaborative agreement where NASA will cover the integration and launch costs of satellites deemed to have merit in support of their strategic and educational goals.

In an article published in the AMSAT Journal, AMSAT Vice-President of Engineering, Tony Monteiro, AA2TX noted that meeting NASA’s educational goals for Science, Technology, Engineering, and Math (STEM) was the cornerstone in the successful acceptance of Fox-1 into the ELaNa project.

Fox-1 continues AMSAT’s long record of success as an all-volunteer organization providing access to space communications for students in a curriculum setting as well the private citizen.

The Fox-1 communication package provides a learning and techological stepping-stone using commonly available amateur radio equipment. Students gain first-hand experience in setting up and operating equipment, orbital prediction, communication to distant places, and growth in overall space literacy. In the classroom, Fox-1 will allow schools, teachers, and students to actively participate in space technology with a unique experimental hands-on learning approach that includes communicating through a satellite in orbit.

All of the Fox-1 experiment and telemetry data will be collected and stored on our internet server and made publicly available for use in the classroom and shared with the CubeSat community.

In addition to mentoring university student cubesat mission teams, AMSAT satellites have also hosted university experiments aboard our spacecraft. In addition to the communications package, Fox-1 will host an experimental payload developed as a capstone project at Penn State University. The Penn State project will have impact on future CubeSat systems as the students design, construct, and orbit an attitude experiment based on a 3-axis micro-electro-mechanical gyroscope.

Fox-1 Project Reviews

The Fox-1 Team participated in a Merit Review and Feasibility Review with a panel including education and industry experts at the Doctorate level, a developer of 29 satellites, and directors of research.

The results of the Fox-1 Merit Review found:

+ AMSAT “nailed” the NASA education requirements of the NASA Education Strategic Coordination Framework and the NASA Education Implementation Framework. In fact, AMSAT has a history of space education that pre-dates most university programs.

+ The Fox-1 program will be accessible to an entire classroom or school with only the teacher or outside volunteer requiring an amateur radio license.

+ The archive of telemetry data collected during actual space flight will prove valuable in future educational projects that have yet to be imagined.

The results of the Fox-1 Feasibility Review found:

+ While AMSAT relies on an all-volunteer development team the tremendous depth and experience of the Fox-1 team far exceeds the capability of a typical CubeSat team. AMSAT has developed its satellites this way for 40 years and has never missed a launch.

+ AMSAT does not rely on critical technology for flight and leverages our experience from prior successful missions:

o Fox-1 is designed to operate in sunlight without batteries once the battery system fails. This applies lessons learned from AO-51 and ARISSat-1 operations.

o In case of IHU failure Fox-1 will continue to operate its FM repeater in a basic, ‘zombie sat’ mode, so that the repeater remains on-the-air.

o Fox-1 is designed as the immediate replacement for AO-51. Its U/V (Mode B) transponder will make it even easier to work with modest equipment.

o From the ground user’s perspective, the same FM amateur radio equipment used for AO-51 may be used for Fox-1.

AMSAT’s Fox-1 project timeline is based on targeting a launch in the second half of 2013. NASA will determine on which flight each of the Project ELaNa CubeSats fly. They have updated their CubeSat Launch Initiative web page including AMSAT’s participation at:
http://www.nasa.gov/directorates/heo/home/CubeSats_initiative.html

Thanks to the Fox-1 Team for the above information.

Team Plan B – Lunar CubeSat Update

Team Plan B – Lunar CubeSat Update

Team ‘Plan B’ is a Vancouver based group of Canadian enthusiasts who aim to land a vehicle on the Moon.

Watch Team Plan B, Year 2012. Update. CubeSat as a testing stage for a Lunar mission.

 

Project PoGo Kickoff

Hobbyspace reports that the San Diego Space Society is starting a project to develop a CubeSat style payload for reusable suborbital space flights.

Project PoGo kicks off on April 7 with its first planning meeting to build reusable suborbital payload based on the CanSat / CubeSat format.

The suborbital payload will be flown to the edge of space on a reusable rocket. This will allow data sample collection to be taken repeatedly and as well as adjustments and improvements to be made to the payload instrumentation. Our goal is to fly twice before the end of 2012.

PoGo’s payload could study a wide variety of phenomenon besides atmosphere and climate monitoring including cosmic radiation monitoring, ozone monitoring, EM field monitoring, etc.

PoGo will consist of at least two teams. One team will focus on payload development and another team will focus on launch provider selection and ground support, aka Mission Control.

Join the Team! We need people to help in the following areas:

– team leaders (x2)
– fundraisers
– promotional and media specialists
– people good with their hands
– people knowledgeable in electronics
– software programmers
– ground support specialists
– and many others.

Update: Team Leaders will be offered a free registration for a cubesat development workshop hosted by the Silicon Valley Space Center.

SD Space members and the public are invited to participate. Please email projects [at] sandiegospace.org if you’d like to attend.

Project PoGo http://sandiegospace.org/?m=20120407&cat=3

CubeSat TURKSAT-3USAT in the Press

The Ankara based Amateur Satellite Technology Association (TAMSAT) have received more press coverage for their new CubeSat TURKSAT-3USAT.

It is a three unit CubeSat developed for SSB/CW communications in low earth orbit. The VHF/UHF transponder and all other subsystems, except the stabilization, are doubled for redundancy. Where possible, both COTS systems and in-house development is employed.

The energy is provided using lithium polymer batteries together with super capacitors. Satellite stabilization is accomplished using passive magnetic attitude control system with hysteresis rods. The satellite is to include a de-orbiting system which will make it re-enter the atmosphere following completion of its life time. The 3USAT is expected to launch near the end of 2012.

IARU coordinated frequencies are: transponder uplink 145.940-145.990 MHz, downlink 435.200-435.250 MHz and a CW beacon on 437.250 MHz.

Read the newspaper story in Google English at http://tinyurl.com/3USAT-PressStory

Web: http://www.tamsat.org.tr/

Facebook: https://www.facebook.com/profile.php?id=100000953042369

Twitter: https://twitter.com/#!/tamsat_tr