On Tuesday, July 24, 2018 at 10:13:02 AM UTC-4, Jonathan St. Cloud wrote:
On Tuesday, July 24, 2018 at 1:23:25 AM UTC-7, wrote:
One last time... FLARM does not need, nor does it record airspeed, for a simple reason: airspeed cannot be used to calculate closure rates between your aircraft and others, or ground obstructions. It works entirely from GPS fixes. It only uses a pressure sensor to enhance altitude data, but does not strictly need it. To my knowledge, no FLARM devices have inputs for airspeed.

Read the manual, folks. It's all documented there, in great detail.

Alarm doesn't record airspeed, but some flight computers do. I know the LXNav records airspeed, flap position ...etc. perhaps this brand new glider had a modern flight computer?

Some that record lose the last few(up to 15) seconds of the file because the data has not been written to memory. If power is disconnected in the crash this data may be lost.
UH