User guide, 7 glossary of terms used in the manual – Eagle Tree Vector User Manual
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USER GUIDE
11
2.7 Glossary of Terms used in the Manual
Here are definitions for some of the terms used throughout the manual.
FPV – FPV stands for First Person View. If you are not familiar with FPV, there are many websites devoted to
it. Our FPV overview web page
has a brief tutorial on FPV, which is
a good place to start.
OSD – OSD stands for On Screen Display. The OSD shows flight information, overlaid on the video camera
image.
RTH – Return to Home. The Vector can optionally return your model to the home point if R/C link is lost.
Software – the term “software” in the manual refers to our Windows PC software application.
Firmware – the firmware is the code that runs on the Vector itself. The latest Vector firmware is included
with the software.
Flight Controller or Stabilizer – the aspect of the Vector that stabilizes your model during flight
Pitch – Lift or descent of the nose and tail of the
model (front to back tilt on multirotors). Normally
controlled by the elevator, or movement of elevons in
same direction.
Roll – Rocking movement of the wings, side to side
(side to side tilt on multirotors). Normally controlled
by ailerons, or movement of elevons in opposite
directions.
Yaw – Turning of the airplane without banking
(rotation on multirotors). Normally controlled by
the rudder.
Axis – an imaginary line drawn horizontally through
your model’s wing (for Pitch), horizontally through your fuselage (for roll), or vertically through the center of
your fuselage (for yaw).
Gain – a setting that controls how hard the stabilizer works to hold the orientation of the model around a
certain axis.
Oscillations – rapid swings of your model around one of its axes, due to a gain setting being too high.
Mode 2 Radio: Transmitters with rudder and throttle on the left stick, and aileron and elevator on the right
stick.
Control Stick – The stick on Mode 2 radios that controls elevator and aileron functions (pitch and roll).
Attitude – The orientation of the model with respect to the horizon.
2D Mode – A mode where the model is brought to a level attitude (level flight and level wings) by the Vector
when the control stick is centered.
3D Mode – A mode where the Vector attempts to hold the model’s present attitude when the control stick is
centered, by moving the model’s control surfaces automatically.
Gyro Mode – A mode where the stabilizer responds similarly to having gyros installed on the control surface
outputs.
Heading – The present direction of travel of the model with respect to North.
Control Surfaces – Your model’s elevator, ailerons (or elevons), flaperons, and/or rudder (if equipped).