Flight 2788
Flight 2788
Nano V1 Rev 4 · firmware 1.61Secure logSecure logThe altimeter signed this log and it passed verification on upload, so the data is unchanged since the device wrote it.Signatures use Ed25519, which no current technology can forge.
Apogee
103.6m
4.59 s after launch
Max ascent
158.37m/s
peak ascent
Max during burn
9.3G
during the burn
Landing
0s
touchdown 0.03 m/s
ZOOM TO
s
s
Flight summary
The flight, moment by moment
Liftoff
0 s
Launch pad tilt82.30°
Thrust calc pad tilt10.5°
Landing
0 s
Altitude-0.01 m
Max descent-29.04 m/s
Launch detected
1.037 s
Altitude30 m
Velocity43.79 m/s
Burnout (first)
1.08 s
Altitude31.51 m
Velocity41.280 m/s
Apogee
4.59 s
Altitude103.6 Meters
Max tilt to burnout140.66°
Possible ejection
4.755 s
Altitude58.42 m
Velocity-0.73 m/s
Stability61%Moderate
Launch straightness (20%)73.6
20% · Launch tilt 10.5°
Coning · full (25%)73.1
25% · Coning 60.6/50.2°/s
Coning · boost (25%)79.8
25% · Spin 151.2°/s
Thrust straightness (30%)26.9
30% · Thrust 83.9%
Rocket information
Calculated from the flight data alone
Boost acceleration38.2 m/s²
average over the burn · 3.9 g
Coast deceleration11.8 m/s²
average · gravity plus drag
Ballistic coefficient173 kg/m²
fitted to the 3.51 s coast
Apogee lost to tilt1.73 m
flown vertical ≈ 105.3 m · from the thrust-calculated tilt
Chute opening peak44.69 G
largest deceleration after ejection
Battery & temperature 73% → 70% · Temperature start 32.17 → 32.33 °C · Launch after startup 1m 9s
Altitude
Apogee103.6 Meters
Time to apogee4.59 s
Burnout altitude31.51 m
Max velocity altitude89.83 m
Ejection altitude58.42 m
Landing altitude-0.01 m
Recording altitude26.07 m
Velocity
Max ascent158.37 m/s
Max descent-29.04 m/s
At burnout41.280 m/s
Descent velocity-3.897 m/s
Ejection velocity-0.73 m/s
Landing velocity0.032 m/s
Acceleration
Max during burn9.3 G
Max ascent9.3 G
Max descent44.69 G
Average ascent0.48 G
Average burn4 G
Times
Burnout (first)1.08 s
Apogee4.59 s
Possible ejection4.755 s
Landing0 s
Angles
Launch pad tilt82.30°
Thrust calc pad tilt10.5°
Max tilt to burnout140.66°
Launch roll77.25°
Launch pitch-52.41°
Max spin (burn)1800.44 dps
Avg spin (burn)291.95 dps
Staging
Stages detected5
Stage S1 burnout
flip1.037 s
drag1.204 s
sig1.188 s
Stage S2 ignition3.632 s
Stage S2 burnout
flip3.761 s
Stage S3 ignition3.632 s
Stage S3 burnout
flip3.761 s
Stage S4 ignition3.632 s
Stage S4 burnout
flip3.761 s
Stage S5 ignition3.632 s
Stage S5 burnout
flip3.761 s
drag3.791 s
sig3.931 s
Recovery
Single deploy
No dual deploy detected on this flight.
General
Upload date14/08/26-15:13:03
Data samples6700
Total recording time41.945 s
Average samples/s159.7
Number of lockouts0
Launch after startup1m 9s
Reference axisY
Battery & temperature
Battery start73%
Battery end70%
Temperature start32.17°C
Temperature end32.33°C
User notes
No notes added
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Youtube video
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Flight images 0
No images added
Flight motors
No motors have been added to this flight
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Linked rocket
No rocket linked to this flight
Linked flights
!The altimeters aboard disagree on apogee by 34.6%
Apogee spread67.8 – 103.6 m
Launch site, date & time
Imagery © Esri, Maxar, Earthstar Geographics
Click the map to place a marker · Drag to adjust
Canopy height from the Meta and WRI High Resolution Canopy Height Maps v2 (Meta and World Resources Institute, 2026; source imagery © 2016 Vantor), used under CC BY 4.0. Ground elevation built from Terrain Tiles (Mapzen and AWS Open Data), derived from 3DEP and GMTED courtesy of the U.S. Geological Survey, SRTM courtesy of NASA, and ETOPO1 courtesy of NOAA. Map and imagery credited on the view above.
No launch site has been set for this flight.
No conditions have been recorded for this flight.
About sea-level pressure and QNH
Sea-level pressure is kept as given: the model’s own, or the figure entered from a forecast or report. QNH is that pressure the way an altimeter setting means it, through the standard atmosphere, and is what the adjusted apogee and the adjusted CSV use.
Model values, not observations. NOAA GFS: weather data by Open-Meteo.com (CC BY 4.0). Ensemble: NOAA GEFS.
Flight data animation
FLIGHT 2788
103.6 Meters
ALTITUDE
0.00m
VELOCITY
0.00m/s
ACCEL
0.00G
TILT
0.00°
PITCH
0.00°
ROLL
0.00°
YAW
0.00°
TIME
0.00s
AWAITING LAUNCH
ALT
altimetercloud.com
LAUNCH
T+0.00s
LANDING
BURNOUT
Motor burn complete
Note: Flight profile animation requires your altimeter to be mounted in a fixed orientation that you choose in your settings. For best results please calibrate your sensors as well.
Nano V1
This flight was flown on a Nano V1.
The hardware
Hardware versionRev 4
Software version1.61
Last online14/08/26-15:13:03
Pressure sensorBosch BMP 581
Accelerometer32G 3-axis
Gyroscope2000 dgps 3-axis
Flights from this altimeter
2 of 2
Settings, as they were for this flight
General flight settings
Forecast pressure
i
Set this to your local forecast pressure at sea level. This will offer you slightly improved accuracty for your flight, although it's not 100% essential every little helps!
Xcweather.co.uk is a decent place to grab pressures from for your location and time.
Xcweather.co.uk is a decent place to grab pressures from for your location and time.
1013.2 mbar
Launch detect
i
This is the altitude above the launch pad altitude where the altimeter will trigger itself into recording / flight mode.
The altimeter keeps a constant average of the pressure while waiting for launch, it uses a simple algorithm and the pre-flight buffers to do this. The most recent 120 samples (~4 seconds) are ignored so your pre-trigger altitude won't effect the ground baseline.
For almost all uses we suggest keeping this on the 25 Meter (~82 feet) default settings. If you want to test your altimeter by throwing it in the air, or are planning a very low flight you may want to lower the setting.
The altimeter keeps a constant average of the pressure while waiting for launch, it uses a simple algorithm and the pre-flight buffers to do this. The most recent 120 samples (~4 seconds) are ignored so your pre-trigger altitude won't effect the ground baseline.
For almost all uses we suggest keeping this on the 25 Meter (~82 feet) default settings. If you want to test your altimeter by throwing it in the air, or are planning a very low flight you may want to lower the setting.
30 meters
Sample ratio
i
The altimeter runs at 50Hz however you can record every sample or every X samples in order to extend the log time. For example if you set the ratio to 1 it will save 1:1 samples, or if you set it to 3 it will save 1 in 3 samples.
1:1:1 (400Hz)
Max samples
i
This is the maximum samples the altimeter will log per flight. When it reaches this amount it will stop and save the recording.
38000
Recording stop
i
This setting is how the altimeter decides to stop recording. You can choose either 450 (~9s) or 900 (~18s) samples stable or it will record until the max samples limit unless you press the BUTTON in Manual stop mode.
The samples stable method waits for the devices altitude not to change for the set number of samples. This is defined by not changing by more than +/- 1.0 meters for 98% of the samples, it's a reliable method to stop the recording after landing within 8-10 seconds (300 sample) or 16-20 seconds (600 sample).
The samples stable method waits for the devices altitude not to change for the set number of samples. This is defined by not changing by more than +/- 1.0 meters for 98% of the samples, it's a reliable method to stop the recording after landing within 8-10 seconds (300 sample) or 16-20 seconds (600 sample).
Auto: 8s stable altitude
Oversampling
i
Oversampling is a internal setting of the BMP 390 pressure sensor. It is how many samples are taken for each reading. By taking multiple samples for each pressure reading the altimeter reduces noise and increases the resolution of the output.
The sensor can run at 50 samples per second in 4X mode, so we suggest leaving it in this mode as it will offer the highest accuracy.
The sensor can run at 50 samples per second in 4X mode, so we suggest leaving it in this mode as it will offer the highest accuracy.
16x Oversampling
IIR filter
i
The IIR filter is another internal sensor for the BMP390 pressure sensor. It is a Infinite impulse response filter used to enhance pressure measurement accuracy by reducing noise. It's primarily for smoothing out rapid pressure changes.
We suggest not setting this too high as it will cause delay to changes in altitude if set very high.
We suggest not setting this too high as it will cause delay to changes in altitude if set very high.
COEFF 7
Pressure filter
i
This filter is a software Kalman filter that runs on the altimeters processor.
The Kalman filter uses a prediction step based on a system model and then a correction step using new measurements to refine its estimate, it creates accurate most certain results from data with noise in it.
The Kalman filter uses a prediction step based on a system model and then a correction step using new measurements to refine its estimate, it creates accurate most certain results from data with noise in it.
TruePath
Sample speed
i
The sample rate of the altimeter's sensors. 50Hz takes 50 samples per second, 100Hz takes 100 samples per second for higher resolution data.
400 Hz
Hybrid mode
i
When enabled, the altimeter records at full speed during ascent then switches to half speed after apogee to extend recording time during descent.
Enabled
Sync sensors
i
The filters on the pressure sensor can cause it to lag very slightly behind the Accelerometer and Gyroscope data.
The Sync sensors option detects how far out of sync these sensors are. It then corrects the Acceleration and Gyroscope readings to match the pressure sensor.
ENABLED (45 samples / 111.97ms)
Orientation
i
This is the orientation you intend to install the Altimeter in your rocket. It's needed to ensure completly accurate angles and orientation charts and reports. Check out the Manual for more information on this.
Down (text up)
IMU filter
i
The IMU filter, or fusion filter takes the data from each axis of the Gyroscope and Accelerometer to calculate the Pitch, Roll, Yaw and tilt angle from vertical.
These filters can build up some discrepency over time so it's important to calibrate your sensors to minimise this.
Madgwick 6-Axis
Launch ALP
i
This is prevention against accidental launch detection.
With this disabled the launch is based only on pressure and something that creates a low pressure can trigger the flight by accident. For example pulling your nose cone off can even trigger it.
With this enabled the rocket also needs to have seen 8 samples (0.25 seconds) of acceleration above this setting in the last 3 seconds as well as the pressure drop to trigger. There is a backup trigger of 1.05 seconds of altitude being above the launch detect setting too.
There are very few situations where this option would cause issues, so we suggest leaving it on.
With this disabled the launch is based only on pressure and something that creates a low pressure can trigger the flight by accident. For example pulling your nose cone off can even trigger it.
With this enabled the rocket also needs to have seen 8 samples (0.25 seconds) of acceleration above this setting in the last 3 seconds as well as the pressure drop to trigger. There is a backup trigger of 1.05 seconds of altitude being above the launch detect setting too.
There are very few situations where this option would cause issues, so we suggest leaving it on.
1.5G
Launch lock
i
When enabled, the altimeter locks out recording for a set period after power on to prevent false triggering during setup.
DISABLED
Static temperature
i
A fixed temperature value used for altitude calculation when the external temperature sensor is disabled or not connected.
15 °C
Sensor calibration
Calibration offsets used during this flight.
Gyroscope
X2.000°
Y0.000°
Z0.000°
Accelerometer⚠ Accelerometer has not been calibrated
X0.000 mG
Y0.000 mG
Z0.000 mG
Files
Where the altimeter signs its log, the file carries that signature and a tick beside it. A tick means the data is unchanged since the device wrote it, which is what a record claim needs.
CSV
2788.csv ✓ SIGNED
The log as columns of text. Opens in a spreadsheet, and in every simulator that reads flight data.
645 KB
LOG
2788.aclz ✓ SIGNED
The altimeter's own compressed log, exactly as the device wrote it. This is the file to keep for a record claim.
93 KB
Adjusted CSV2904 recalculated in your browser
The log recomputed for your own sea-level pressure and temperature. Columns: time, altitude as recorded and adjusted, raw altitude as recorded and adjusted, pressure.
This file is built here from the signed log, so it carries no signature of its own. Anyone verifying a claim should be sent to the flight page and build their own from the original.
Share this flight
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Chart snapshot
A PNG of the chart exactly as you have it set right now: the series you have switched on, your zoom, your labels and any pressure correction applied.
Hotlink images
Stored images of the whole flight, altitude only, not your current chart view. Transparent, regenerated whenever the flight changes, and safe to hotlink on a forum.
QR code
Links to this flight page. Useful on a range card or a club display.
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