Amazing how once on the www things live forever.
This exchange was right after launch when we were having trouble getting the initial software booted up and running. Turns out the flash stored boot loader and initial housekeeping software had become corrupted just before launch. While we don't know for sure we suspected that happened when we were doing last minute battery charging and through operator error 'browned out' the processor repeatedly.
SpaceQuest (who built the avionics) was able to provide this snapshot using their boot loaded / command software suite. Subsequent to this they were able to provide a modified set of firmware we uploaded and as you can see from the dates FS3 has been operated for over 10 years. Check the current uptime telemetry line. The first number is the days it has been operating without interruption.
Jim
On 10/13/2017 7:32 AM, Robert Bruninga wrote:
Searching for a Falconsat email a few days ago, my email found this one from TEN YEARS ago!
-----Original Message----- From: Richard M. Hambly [W2GPS] Sent: Friday, March 30, 2007 9:31 AM -----Original Message----- From: Billy Smith [Naval Academy] Sent: Friday, March 30, 2007 9:24 AM -----Original Message----- From: Latimer, Ellis H [Boeing.com] Sent: Friday, March 30, 2007 8:36 AM -----Original Message----- From: Lawrence Timothy J Lt Col [AirForce Academy] Thursday, March 29, 2007 9:14 PM Subject: FalconSAT-3 Update
All-
SpaceQuest was able to send us the "raw count" telemetry from their software and we were able to translate it into the following:
Battery Voltage = 10.1 V (expected 8.0-10.6V) UHF Transmitter Power = 7.584W draw, 1 W output (expected values) Total power being produced from the 4 solar panels = 12.7 W Power Distribution Board Power = 3.36V (needed to enable payloads, 3.3V required) Core Temperature: 6.9 C ADCS: +Y direction was facing the sun as they took this data
We were able to check 54 data channels, and all indications are that the satellite is in a healthy state.
We are still talking to SpaceQuest to sort out why our software was "hung up" at initialization, have developed some new theories and will do extensive testing on our Qual Model tomorrow here at USAFA.
Thanks for all of the positive emails, I emailed the cadets today (they are on Spring Break) and told them to rest up since they will be put to work when they return as we start commissioning :)
V/R, Tim
Timothy J. Lawrence, Lt Col, USAF, PhD Director, ...Department of Astronautics United States Air Force Academy USAFA, Colorado 80840 _______________________________________________ Sent via AMSAT-BB@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