In response to a breaking opportunity, AMSAT and Spaceflight, Inc. have arranged for Fox-1D to accompany Fox-1Cliff on the maiden flight of the SHERPA system on a SpaceX Falcon 9. As a Fox-1 series, Fox-1D is identical to Fox-1Cliff, but with different frequencies and carrying the University of Iowa HERCI (High Energy Radiation CubeSat Instrument) radiation mapping experiment as a hosted payload. Fox-1D will provide additional selectable U/V or L/V repeater capabilities once in orbit, and will be capable of downlinking Earth images from the Virginia Tech camera experiment. Launch is currently planned for the first quarter of 2016. Additional donor support is needed to offset the costs associated with the launch of Fox-1D in addition to Fox-1Cliff. Please visit www.amsat.org to donate support this launch, and help keep amateur radio in space.
AMSAT and University of Iowa Partner on Scientific Payload for Fox-1D
AMSAT and the University of Iowa have agreed to include the University’s
HERCI (High Energy Radiation CubeSat Instrument) radiation mapping
experiment on Fox-1D. According to Don Kirchner, KDØL, Research Engineer at
the University of Iowa, “HERCI is intended to provide a mapping of radiation
in a low earth orbit. This is of scientific interest for planning CubeSat
test flights for low energy X-Ray detectors.”
“The instrument consists of a digital processing unit (DPU) derived from
processors currently in orbit around Saturn on Cassini and on the way to
Jupiter on the Juno spacecraft,” says Kirchner. “The DPU was shrunk to a CubeSat
form factor with funding from the Iowa Space Grant Consortium.”
The University of Iowa’s history in spaceflight research dates back to the
earliest satellites. As Kirchner puts it, “HERCI can be considered a direct
descendent of the first University of Iowa spaceflight instrument flown on
Explorer I in 1958. The instrument is being constructed as a Senior Design
Project by four Electrical Engineering students from the UI College of
Engineering, under supervision of Space Physics engineering staff from the
Department of Physics and Astronomy.”
AMSAT’s VP of Engineering, Jerry Buxton, NØJY, noted the win-win benefits of
the agreement, stating, “This partnership with the University of Iowa
illustrates our strategy of leveraging the new CubeSat design to assist
universities that need a way to fly scientific payloads while providing a
viable ongoing platform for amateur radio.”
Photos courtesy of William Robison, KC0JFQ.
APIC Safety Lead for the GRACE mission and the LSP Range Safety required AMSAT Engineering to demonstrate the safety of the Sanyo KR-1400AE cells used in the Fox-1A satellite, in light of the cells having no UL listing nor available manufacturer documentation on the cell case pressure and venting pressure.
After a few weeks spent on planning, obtaining components, construction, and rehearsal (there are no “do-overs” once the circuit is closed!) a small team consisting of Bob Fitzpatrick KB5SQG, Shura Buxton KD5FCQ, and Jerry Buxton NØJY performed the test on Sunday afternoon, December 7, 2014. The cell was subjected to a direct short circuit and the current, temperature, and physical behavior were observed, logged, and captured on video. While the report to APIC is For Official Use Only, the video is not and so you are invited to view the raw footage (minus a couple of spots where audio has been muted for expletives or chatter unrelated to the test) on YouTube.
The test was successful, as it was demonstrated that the cell did not burst nor greatly deform, there was no fire or damage, and no liquid leakage. There was quite a surprise, though!
The multimeter is reading mV DC across a .001 ohm current sense resistor, so the reading you see directly corresponds to current. Temperature is in degrees Celsius.
And Murphy was of course present, as a natural part of anything involving amateur radio activities. Fortunately, the stopwatch wound up almost exactly 10 seconds behind so translation of the readings was pretty simple!
The AMSAT Board of Directors met on December 2, 2014. As a part of AMSAT’s “Design The Next AMSAT Satellite” challenge, the Board of Directors approved $5000, within the 2015 engineering budget, to be used as seed money for future satellite development. Additional fund raising sources will also be investigated and pursued.
AMSAT President Barry Baines, WD4ASW, said, “We’re prepared to return to space starting in 2015 with a fleet of satellites that will equal, if not exceed, the performance, and availability to the average ham, of our previously popular AMSAT OSCAR 51. Meanwhile, we are preparing for the future looking to potentially leverage new technologies, to provide the best opportunities for enhancing amateur radio’s presence in space.”
Director Tom Clark, K3IO, noted the need for a defined future systems program. Tom said, “We saw a significant number of both new and old members who want to see the development of critical system elements for future opportunities by 2018-20. As I see it, critical ‘tall poles’ in applying potential technologies require significant work to begin now to ensure success.”
AMSAT is interested in supporting technology ideas that enhance the utility of using the CubeSat form factor to support more robust amateur satellite capabilities. The scope of potential interest in not limited; some examples of technology enhancement might include:
+ Microwave technology suitable for use in amateur spacecraft. This includes the need to identify optimum frequency bands.
+ Complementary, low-cost ground systems, including an effective ~1º antenna pointing system.
+ Define and develop optimum coding and modulation schemes for low power microwave use.
+ Attitude determination & control systems to point the spacecraft antennas towards the user while maximizing solar panel production.
Individuals interested in learning more about this initiative should contact AMSAT Vice President-Engineering Jerry Buxton, N0JY using the contact form found here.
Meanwhile, the development of AMSAT’s current series of the Fox-1 cubesats continues on schedule. AMSAT Vice-President of Engineering, Jerry Buxton, N0JY reported during the Board meeting that construction and testing of five Fox satellites is on schedule:
+ Fox-1A will launch on a NASA ELaNa flight during the 3rd quarter of 2015 from Vandenberg AFB,
+ Fox-1B will fly with the Vanderbilt University radiation experiments expected in 2016.
+ Fox-1C will launch on Spaceflight’s maiden mission of the SHERPA multi-cubesat deployer during the 3rd quarter of 2015. This flight was purchased by AMSAT.
+ Fox-1D is a flight spare for Fox-1C. If not needed as a spare it will become available to launch on any open launch slot which becomes available and be submitted in a CSLI proposal in 2015.
+ Fox-1E is built as a flight spare for Fox-1B but has been included in a student science proposal as part of the November, 2014 Cubesat Launch Initiative (CSLI) for an ELaNa flight slot. If selected the Fox-1B spare will fly as Fox-1E.
More details of the “Design The Next AMSAT Satellite” challenge can be found on-line at:
http://www.amsat.org/?p=3395 – and – in the November/December 2014 AMSAT Journal, currently in-transit to your QTH.
[ANS thanks the AMSAT Board Of Directors for the above information]