User`s manual

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The flight status is updated by the Eggtimer TRS as the flight progresses, and saved into the flight
memory. In the event that for some reason something goes wrong, you can use this value to help
you figure it out. The status codes are:
0 - Flight Not Started (in programming or pre-Ready mode)
1 - Waiting for LDA
2 - LDA reached
3 - Not Used
4 - Not Used
5 - Mach Lockout expired (< 100 ft/sec for over 1 second, after LDA)
6 - Nose-Over
7 - Drogue (if selected)
8 - Main deployed (if selected)
9 - Landing detected
Most of the time after a successful flight, this code will be a “9”. If the rocket gets stuck in a tree,
for example, and the landing altitude is never reached (< 30 ft for at least 5 seconds) this will end up
being the last previous flight phase; for example, if it was a multiple-deployment flight, the last
status code will be 8 (Main Deployed), if there was no deployment selected it will be a 6 (Nose-
Over).
As you can see from this data, the rocket got to 4525 feet, had a maximum velocity of 667 feet/sec.
The actual LDA was 203 ft at 700ms into the flight, it was set to 200 ft. Nose-Over and Drogue
fired at 4447 ft at 18 secs, and the Main fired at 489 ft at 94 secs.
To download the detail data, press the button again… you will see something like this.
T,Alt,Veloc,FAlt,FVeloc,FVeloc2,LDA,LowV,Apogee,N-O,Drogue,Main
0,0,0,0,0,0,0,0,0,0,0,0
50,12,240,2.4,48,9.6,0,0,0,0,0,0
100,20,160,5.92,70.4,21.76,0,0,0,0,0,0
150,25,100,9.74,76.32,32.67,0,0,0,0,0,0
200,29,80,13.59,77.06,41.55,0,0,0,0,0,0
250,34,100,17.67,81.64,49.57,0,0,0,0,0,0
300,46,240,23.34,113.32,62.32,0,0,0,0,0,0
350,59,260,30.47,142.65,78.38,0,0,0,0,0,0
400,77,360,39.78,186.12,99.93,0,0,0,0,0,0
450,94,340,50.62,216.9,123.33,0,0,0,0,0,0
500,129,700,66.3,313.52,161.36,0,0,0,0,0,0
550,153,480,83.64,346.81,198.45,0,0,0,0,0,0
600,181,560,103.11,389.45,236.65,0,0,0,0,0,0
650,196,300,121.69,371.56,263.64,0,0,0,0,0,0
700,203,140,137.95,325.25,275.96,203,0,0,0,0,0
750,206,60,151.56,272.2,275.21,0,0,0,0,0,0
etc…
The first data field is the elapsed time in milliseconds, the second data field is the altitude in feet,
and the third data field is the velocity in ft/sec. The two “F” fields are filtered data, the rest of the
values are event markers that show when various flight milestones have been reached. After you
close the file, you can open it with the data analysis program of your choice. For example, if you
import it into Excel, you can graph Time vs. Alt and Time vs. Velocity. See our web site,
www.eggtimerrocketry.com , for step by step instructions on how to do this; it’s not difficult once
you get the hang of it. You can also import the CSV data into statistical software packages, although
this is beyond the scope of what we’re doing here.