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Highlights of recent developments on the MiniSShot Project
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- Hans continues to review and assess the Chute Controller (CC) and Main
Computer (MC) data, in conjunction with GPS and Parrot altimeter data.
Hans writes "Apart from the GPS, the altitude data looks to be in fairly
close agreement (Parrot altitude is calculated post flight). I have
added data points corresponding (as good as possible) to radiosonde data."
With regard to the GPS data, "It looks like it does get the correct
summit altitude, although with a significant delay. It also gets the
descent, but with a different (and shorter) delay."
http://sugarshot.org/downloads/msaltitude.gif
- Analysis of flight event data to determine the cause of the anomaly
continues with good progress being made. Participating in this endeavour
are Richard Nakka, Robert Krech and Mark LaBarre. Hans, Adrian Adamson
and Peter Kocalka have provided good support with regard to
interpretation of the data.
- Additional launch event photos:
Payload Capsule about to safely touch down in the Mojave Desert:
http://sugarshot.org/downloads/dsc04807edited.jpg
(photo courtesy Rick Maschek)
Recovered sections of the MiniSShot rocket:
http://sugarshot.org/downloads/img_0809.jpg
(photo courtesy Travis Kallahar)
- A replacement video camcorder has been ordered to replace the one
damaged during the flight. It is hoped that the SD card that was pulled
from the damaged on-board camcorder has video footage that can be recovered.
- Jeff Lehman has kindly produced a debrief document describing the
efforts of the Tracking and Recovery teams. Included are "lessons
learned" which should prove to be of great value for the next launch event.
http://sugarshot.org/downloads/april_25_2010_sugarshot_tracking_recovery_deb.pdf
Ken Mannat has produced a file of the audio telemetry, and provides the
following comments:
"The audio file was converted to Mono, Audio level was normalized. The
file was then fed into a KPC3+ for deconvolution. The TNC was set for
Hex output Raw data & ASCII. Noise filtering was attempted. While the
audio sounded cleaner the phase errors introduced appear to have reduced
the ability of the TNC to translate. Software deconvolution was also
attempted yet produced very poor results. In the audio file the noise
swamps the data at the time of launch. This leads me to believe that
the dual choices of AM/ATV modulation and a patch antenna are not
optimal for this use. We would benefit from a lower power dedicated FM
telemetry beacon. Position data should be sent in a standard format.
Time information should be included. Also to keep us legal a valid call
sign should be used.
http://sugarshot.org/downloads/ss2s_tlmpktlog.pdf
- A big "thank you" goes out to Silver Donor and long-time supporter Dan
Pollino for his latest donation.
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continuing our quest for Space!
http://www.sugarshot.org/sponsors.html#Donors
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Project
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