Aerobatics Flight Data

Plot description and maneuver analysis at:

http://www.project240.net/airdata/aerobatics_data.html


Aerobatic maneuvers of an instrumented R/C aircraft demonstrate stick inputs and dynamic response during agile flight. The R/C Flash 3D EPP aircraft is equipped with instrumentation to measure accelerations, angular rates, pitot-static pressure, GPS, and servo motion at 100Hz. The data is recorded to on-board flash memory and is animated and synchronized to the external video in post-processing. DataNinja is used to measure and record the analog signals generated by the IMU, NinjaSense.

Several representations of flight data are shown in the lower portion of the video.

G-Load: Left-Plot
Lateral versus vertical accelerations (G-load) are presented in the left cross-plot and show the combined loads on the aircraft during the maneuvers. The level flight case of 0G lateral and 1G vertical is indicated by a black cross. Positive lateral Gs express acceleration toward the right wing and positive vertical Gs are upward accelerations. The current acceleration is shown as a color-coded point on the plot, where the color indicates the magnitude of the total acceleration. Zero G is shown as a blue dot, whereas 3+Gs are shown as a red dot. Intermediate loadings are shown as green, yellow, and orange. A temporal trail is added to show a 1-second time history of the accelerations. The color saturation of the points on the trail decrease with time, such that the current time is fully saturated, and 1-second-old data is fully desaturated.

Angular Rate: Center-Plot
Angular rates are shown versus time in the wide center scrolling plot, where the current time is approximated by the points on the center black dashed line. Roll, pitch, and yaw rates are shown as blue, green, and red lines, respectively. All data to the left of the black line are in the past and all data to the right are in the future. The plot is scaled to +/- 700 degrees per second, although the roll magnitude exceeds this in one instances.

Stick Position: Right-Plot
A representation of the stick position is shown on the right plot from the measured servo positions. The standard R/C convention is used (Mode 2), where aileron and elevator share a stick and are actuated by horizontal and vertical motions, respectively. Rudder is shown on the lower stick and is actuated by horizontal motion.


Several people and organizations have graciously donated time and resources to this effort.

Tasneem Koleilat filmed the maneuvers, supported flight test, and provided Ninja training.

Justin McAllister advised the board layout and embedded code design for DataNinja

Sparkfun.com provided excellent tutorials on circuit layout and SMD soldering, and also maintain an outstanding supply shop for robotics hobbyists.

Benedetto Vigna of ST Microelectronics generously provided the accelerometers (LIS344ALH) and angular rate sensors (LY550AL).

The perfectly-frantic music is cornandbeans - The Traveller

Category:

Science & Technology

Tags:

• Flash
• 3D
• Aerobatics
• Flight
• Data
• Dynamics
• Science
• Happens
• cornandbeans

[urtismcdona13c]

This video went viral on Bangladesh

[AchallengerA]

It would be great to see something like this about real one...

[aerobenQH]

top stuff mate - very impressed :-)

[ricolk93]

Fantastic!