Liftoff
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Open a flight log
Use a CSV or a one-sheet workbook. Mission time can be negative or fractional. A blank cell stays missing. Units are taken from the header or from the choice you confirm. This page does not guess them.
Included practice files are webcast readouts, not raw downlink and not independently verified. Starlink 15-18 is the dense file. Two later files are titled only “Starlink Mission,” dated 2026-10-27 and 2026-10-23 EDT, both from Vandenberg. Their group numbers and exact liftoff clock are not in the files as verified facts. A partial Transporter-18 workbook is included too.
The last row is not a landing, and the highest point in the file is not an orbital apogee, unless you turn on the model-rocket check for a short flight above the launch site.
Move across a chart to read a sample.
Time offsets
An offset is added only on the chart. The file’s mission time is not rewritten, and nothing is guessed from another stage.
Add a marker
A marker you add is a label. It is not a detected event.
Source markers
Rows from an event list stay graphic or audio as written. ASR-assisted and provisional notes stay provisional. They are not detected or confirmed events. A new event list replaces the previous one. Markers you add yourself stay. A row is attached only to a track with the same name.
Apogee
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Landing
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How this file was read
Altitude
m above the launch site Estimate True pathPressure
PaTemperature
°CDrag across a chart to zoom the time axis. Double-click a chart to show the full flight.
What this sketch leaves out
The flight is a one-dimensional sketch: constant net climb acceleration, a drag-free coast, and a parachute that opens at apogee and sinks at a constant rate. Sensor noise is plain Gaussian noise, not a barometer model. No barometer is selected here, and this page does not open a serial port.
Liftoff, apogee, and landing are read from the altitude estimate only. The detector does not look at the sketch’s phase labels. It lags liftoff until the climb clears pad noise, and it lags landing until recent motion dies away. A very low flight can be missed. A very slow descent can be marked landed a little early. This is a check on a finished log. It must not fire hardware, and it is not for flight safety.
Limits of this page
This is a reader and a model-rocket sketch. It is not certified flight software, and it does not accept every logger on the market. A header such as altitude with no unit waits for you to choose meters, kilometers, or feet. Unknown altitude and speed references stay unknown.
Files over 20 MB, more than 500,000 rows, more than 128 columns, or a cell over 100,000 characters are refused. Blank numbers are not filled in. A workbook with several sheets asks you to pick one. Dynamic pressure is not calculated. g-force and engine-icon counts are display extras, not throttle.