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VelocAcc (velocity) - the velocity derived from the accelerometer in ft/sec
AltAcc (altitude) - the DISTANCE TRAVELED derived from the accelerometer in ft.
Then you will see the FILTERED values...
FAlt (filtered altitude) – the FILTERED pressure-derived altitude value
FVeloc (filtered velocity) – the FILTERED barometric velocity for that sample, derived from the
difference in FILTERED altitude between this ample and the previous sample and the time interval
between them
FAccelG (filtered acceleration) - FILTERED acceleration value from the accelerometer, in G's
FAccelFpss (filtered acceleration) - FILTERED acceleration value from the accelerometer, in
feet/sec^2 (this is a better value for graphing against altitude/velocity, since it tends to be closer in
magnitude than the G value)
FAccVel (filtered velocity) - the FILTERED velocity value derived from the accelerometer
FAccAlt (filtered altitude) - the FILTERED altitude derived from the accelerometer
Following that data are the events. Event data is ZERO unless the sample triggers the event, in
which case it's the RAW altitude data, since these events theoretically should occur at a relatively
low velocity (sub-mach transition). This format causes a scatter graph of the data to show a little
spike where the event occurs, which is a very easy and convenient way of viewing where the event
occurred. Note that the non-filtered barometric altitude is used as the marker value... if you are
viewing this from a scatter graph vs. Time, you will see a "spike" at the time of the event.
LDA – Non-zero at the sample when the LDA altitude is first exceeded
MaxV - Non-zero at the sample when maximum velocity is achieved
MaxA - Non-zero at the sample when maximum acceleration is achieved
LowV – Non-zero at the sample when the low velocity threshold (< 100 ft/sec for 1 second) is
reached
Apogee – Non-zero at the sample when apogee is reached
N-O – Non-zero at the sample when Nose-Over is reached, typically one second past apogee
CH1-CH6 – Non-zero at the sample when the channel is first triggered
Due to the many programs that can be used to view/manipulate this data, we're not going to go into
what you should do to graph/view it... we recommend that you check the documentation for your
data analysis program for that information. Suffice it to say that you can get some pretty good
graphs out of a standard spreadsheet program like Excel, using a scatter graph (Time vs. parameters).
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