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Device: 9C13-9ECF-53C4
Flight ID: 2617Flight 2617
Flight summary
Altitude
Apogee
301.81 Meters
Time to apogee
10.48 seconds
Burnout altitude
0.19 m
Max velocity altitude
59.61 m
Ejection altitude
0.19 m
Landing altitude
300.28 m
Stability
Stability score
0 / 100 (Poor)
Launch straightness (20%)0
Coning · full (25%)0
Coning · boost (25%)0
Thrust straightness (30%)0
Launch tilt 0° · Coning 0/0°/s · Spin 0°/s · Thrust 0%
About this score
Worked out from the flight log between liftoff and 80% of apogee, independent of the angle the altimeter was mounted at in the airframe.
Launch straightness (20%) – how close to vertical it left the rod.
Coning · full (25%) and Coning · boost (25%) – how much the nose swung off the rocket's own axis. The main factor.
Thrust straightness (30%) – how cleanly the motor pushed along the body.
Spin about the rocket's own axis is not counted against it — a fast, straight spin is stable. The line under the bars shows the raw measurements.
Velocity
Max ascent
334.69 m/s
Max descent
-266.52 m/s
At burnout
2.350 m/s
Landing velocity
-4.350 m/s
Descent velocity
234.110 m/s
Ejection velocity
1.97 m/s
Recovery
Single deploy (no dual deploy detected)
Acceleration
Max ascent
0.91 G
Max descent
3.28 G
Max during burn
0.05 G
Average ascent
0 G
Average burn
N/A
Times
Burnout (first)
0 seconds
Apogee
10.48 seconds
Possible ejection
0 seconds
Landing
9.59 seconds
Output #1 ON
0 seconds
Output #1 OFF
0 seconds
Angles
Launch pad tilt
86.52°
Thrust calc pad tilt
0°
Max tilt to burnout
91.51°
Launch roll
-80.05°
Launch pitch
-69.64°
Max spin (burn)
0 dps
Avg spin (burn)
0 dps
General
Flight time (approx)
No time available
Upload date
15-Jul at 20:37
Data samples
4573
Total recording time
31.500 s
Average samples/s
145.1
Number of lockouts
2
Recording altitude
208.27 m
Launch after startup
6m 56s
Reference axis
Z
Battery & temperature
Battery start
94%
Battery end
93%
Temperature start
32.39°C
Temperature end
32.45°C
MT1 launch temp
0°C
Flight data animation
FLIGHT 2617
301.81 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.
User notes
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Youtube video
No video added
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Flight images (0)
No images added
Linked rocket
No rocket linked to this flight
Device information
Mercury Plus
Revision 0
Revision 0
Mercury Plus
This flight was flown on a Mercury Plus.
Hardware version
Rev 0
Software version
1.00
Last online
15-Jul at 21:02
Accelerometer
32G 3-axis
Gyroscope
2000 dgps 3-axis
Pressure sensor
Bosch BMP 390
Magnetometer
N/A
Flight motors
No motors have been added to this flight
Add this device to your account to edit
Motor burn
To overlay a thrustcurve here, add your motors to this flight using the “Flight motors” box above. The combined thrust curve is then scaled to match the recorded acceleration peak.
Launch site, date & time
Click anywhere on the map to mark your launch site. Switch between map and satellite view using the buttons below.
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Click the map to place a marker · Drag to adjust
Lat—
Lng—
✓ Launch location saved successfully.
✗ Could not save location — please try again.
Rule events
No output rules fired during this flight.
Motor match (BETA)
Very much in testing mode! We are working out how to guess which motor a flight flew on.
Brand
Motor
Score
Shape
Burn
Estes
1/4A3T
22
1.2%
41.6%
Contrail
G300
18
56%
57%
General flight settings
This is a snapshot of the settings that were used for this flight. pop over to the
pop over to the My devices page and then Configure settings on the device..
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.
1018.6 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.
35 meters
Sample rate
i
The base sample rate of the altimeter's sensors in samples per second. This setting was deprecated in firmware 2.0+.
32 Hz
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.
1:5 (hybrid, reduces after apogee)
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.
18000
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: 450 samples stable (~9s)
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.
Kalman 2 (default)
Lockout change
i
This is how we detect a lockout. If the pressure changes by this much in a single sample downwards (pressure increase, lower altitude) then it's likely to be a false reading. Multiply the setting by 32 to get the speed in meters per second that it will trigger at.
0.5 meters
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
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.
Upwards (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.
Disabled
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
Temp sensor
i
If an external MT1 temperature sensor is connected, this controls whether it is used for logging only or also for altitude calculations.
DISABLED
Output settings
This is a snapshot of the settings that were used for this flight.
Arm switch
i
When enabled, GP6 is a hardware arm switch — outputs and rules are held off until the switch is closed to ground.
DISABLED
Startup lockout
i
Outputs and rules are blocked for this many seconds after power-on while sensors settle. 0 = off.
None
Launch confirm delay
i
After launch is detected, outputs and rules won't fire until this many seconds have passed.
2 s
Altitude floor
i
Outputs and rules are blocked until the rocket is at least this height above the launch pad.
50 m
Custom dataset 1
i
User-defined expression evaluated per sample, available for charting.
—
Custom dataset 2
—
Sensor calibration
Calibration offsets used during this flight.
Gyroscope
⚠ Gyroscope has not been calibrated
X
0.000°
Y
0.000°
Z
0.000°
Accelerometer
⚠ Accelerometer has not been calibrated
X
0.000 mG
Y
0.000 mG
Z
0.000 mG
Device settings
This is a snapshot of the settings that were used for this flight.
This is a snapshot of the settings that were used for this flight.
Device TAG
i
A custom name or tag assigned to this device for easy identification.
Merc9119
Language
i
The language setting configured on the device.
🇬🇧 English
Shutdown mode
i
Controls what happens after recording. Standard shuts down normally, Delayed keeps WiFi on for 30 seconds after landing, Stay on keeps the device powered on.
Delayed 30s
LED brightness
i
The brightness level of the LED indicators on the Mercury. Lower values save battery.
20%
WiFi TX power
i
WiFi transmit power level. Higher gives better range but uses more battery.
2 dBm (low)
Sleep mode
i
Controls whether the device enters low-power sleep when idle.
Normal (sleep when idle)
Battery monitor
i
Monitors battery voltage during the flight.
DISABLED
Cloud group
i
The cloud group / category this flight is assigned to.
General use
GP6 / GP7 ports
GP port control was not available until firmware 2.0
I2C PCA9685 Servo Board
GP port control was not available until firmware 2.0
Prediction and air brakes
This feature was not available until version 2.10+
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