FeiYu Tech FY-31AP - Manual

Guilin Feiyu Electronic Technology Co., Ltd
Guilin Feiyu Electronic Technology Co., Ltd http://www.feiyudz.cn E-mail: [email protected] Page 1
FY-31AP Flight Stabilization System
Installation & Operation manual
Dear Customer:
Thank you for choosing FY-31AP as your autopilot system. Please read
this manual carefully before using the system to ensure proper use and
operation.
The installation and use of this device require some skill and knowledge
in flying remote controlled fixed wing aircraft.

If you are a complete beginner and have never flown one before, we
do not recommend you install this device on your own.
 Please find assistance from an experience RC Pilot who may provide
you with the basic knowledge required to use this device
successfully.
 If you are already an experienced flyer, you will find the FY31AP
installation to be easy and logical. Just follow this manual and you
won’t go wrong.
If you need any technical support you can send mail directly to:
[email protected]
1. Attitude Flight Stabilization System (AFSS)
FY31AP is an inertial attitude measurement instrument used for
automated stabilization of fixed wing model aircrafts and simple three
axis camera gimbals.
FY31AP has an integrated three-axis gyro and three-axis accelerometer
which controls the aircraft movement in three - dimensional space.
2. Barometric Sensing and GPS
FY-31AP control module incorporates an accurate barometric pressure
sensor. At start up, the take-off air pressure is measured, providing the
autopilot with an accurate relative height data.
While the GPS module enables the autopilot to calculate the flight
course and exact location of the aircraft. If the FY31AP is not connected
GPS module, the autonomous flight system cannot be engaged and it
will function purely as a flight stabilizer.
After connecting the GPS and booting up, the FY-31AP will search for
GPS positioning signals, the first time the GPS positioning successfully
and the satellites quantity at least 4, then the FY-31AP will remember
this position as the home point
3. Function Of FY-31AP
By using your remote control, the FY-31AP can be turned on or off for
the following functions:
 Level flight – When stabilization is activated, the FY31AP will
automatically control the aircraft for smooth easy flying. For
beginners in RC aircraft flying, this is advantages as it makes flight
easier and increases the student pilot self-confidence. The system
can be activated throughout the entire flight duration, from take off
to landing.
 Emergency Recovery - If you lose orientation release all control
sticks, maintain throttle and switch ON the FY31AP. The unit will
automatically send the correct signals to balance of the aircraft and
regain level flight, giving you time to get your orientation and fly the
plane back to safety.
 Autonomous flight –with the GPS module the autonomous flight
system of the FY31AP will enable you to fly fully autonomous, with
up to 8 waypoints (above firmware V2.1, waypoints add to 20. )
settings on the FY Ground Control Station software.
 Ground Control Station – the FY GCS software will enable you to fly
autonomously to up to 8 waypoints (above firmware V2.1, waypoints
add to 20. ) , display in-flight telemetry data, and record that flight
for replay and analysis (this requires the optional Data Radio
hardware).
 Automated circling - by activating this function, the aircraft will
automatically circle the selected area at a fixed altitude (FY-31AP has
50m altitude protection limited,if the switch point altitude below
50m,FY-31AP will automatic climb to 50m.) the centre of the circle is
the current point. You can set the circling radius, the default radius is
80 meters.
 Return to Home – You can set autonomous return to home via a 3
way switch or through your failsafe setting, enabling you plane
returning to home should it lose your transmitter signal. Upon
reaching the home point it will automatically engage auto circling,
while it waits for your further instructions. (FY-31AP has 50m
altitude protection limited,if the switch point altitude below
50m,FY-31AP will automatic climb to 50m.)
 First Person View - for long-distance RC flight via video transmitter,
the FY31AP will maintain the balance of your aircraft. You only need
to control the heading of your aircraft and enjoy the view.
 Firmware upgrade – The FY31AP firmware is upgradable by
connecting to your computer via a USB TTL cable. As Feiyu Tech
continuously improves the FY31AP system, firmware upgrades will
be released periodically.
4. Optional Upgrade with FY-OSD and Data Radio
The FY-31AP provides an optional upgrade combining with the FY-OSD
and the Data Radio. With this add-on, you will receive:

First Person View (FPV): by connecting this interface to the FY-OSD,
telemetric data such as GPS, flight navigation, AHI can be displayed
on your downlink video. On the other hand, it will be easier to
operate FPV with the functions of automatic balance and automated
return to home.
 Real time telemetry – real time by-directional telemetry is
monitored directly by your ground station computer. Changes to
aircraft altitude and flight path can be controlled from your ground
station computer.
 Record and monitor your flight - you can monitor and download
your flight path into your ground station computer.
For more information, please refer to the FY-OSD and FY Data Radio
manual.
5. FY-31AP Package Content
• FY-31AP control module *1;
• GPS receiver * 1;
• RC receiver connecting wires * 1;
• Velcro double sided tape * 2;
• Some related wire.
• Instruction manual * 1;
6. Technical Specification and working requirement
 FY-31AP module:
Input voltage : 4.0 ~ 6.0 Volt;
Current draw : 50mA (5V);
Size : 47 x 27 x 20 mm;
Weight (excluding wires) : 25g;
Temperature range : -25 ° C ~ +70 ° C;
Maximum rate of rotation : ≤ 2000 ° /s
 GPS module:
Input voltage : 3.0 ~ 3.3 Volt;
Current draw : 60mA (3.3V);
Size : 32 x32x 10 mm;
Weight (excluding wires) : 22g;
Temperature range : -25 ° C ~ +70 ° C;
7. Application
The FY-31AP can be installed in the following aircraft :
1) Normal / Traditional fixed-wing planes;
2) Delta-winged plane with rudder;
3) Delta-winged plane without rudder;
4) Plane without aileron;
5) V-tail plane with aileron;
6) V-tail plane without aileron;
7) Any other configuration , please e-mail us for enquiry:
[email protected]
8. Remote control system requirement
The FY-31AP has been tested to work with the following RC systems:
 Robbe-Futaba PPM / PCM 1024 / PCM G3 mode, 2.4 GHz systems；
 Graupner/JR PPM 8, PPM 12, SPCM mode；
 MPX PPM8, PPM 12 with UNI mode
 Any remote control system using the standard of 1.5 ms neutral
position.
9. FY-31AP Flight Modes
The FY-31AP has three flight modes, you can activate any of the flight
modes via a free Receiver channel and a 3-position switch (named as
“SW1”) on your computer radio.

Mode 1: Deactivated Mode. In this mode, all control of the aircraft
is by the pilot. The FY-31AP does not participate in flight control.

Mode 2: Stabilized mode . In this mode and your transmitter control
sticks at center, the FY31AP will continuously send out controlling
signal (aileron, elevator, rudder) to ensure the aircraft maintains a
stabilized, horizontal flight and constant flight direction. In this
mode FY-31AP will not allow acrobatic flights.

Mode 3: Navigation mode. In this channel you can select one of
the following mode to be activated.
A: Path Navigation mode, In this mode, the waypoint will be set
according to the flight path to automatic flight.
B: Fixed altitude flight ,When this function is activated, the unit will
maintain your aircraft altitude. You only need to input the right
throttle level and point the plane in the direction you want to go.
C:Heading lock flight: once this mode is activated, the autopilot
will auto calculate out a rays as the path, the ray‘s starting point is
the current point, and the angle is the current heading angle.
10. FY-31AP Autonomous Flight Modes
Three autopilot modes are incorporated into the FY-31AP, you can set it
via a free receiver channel and a 3-position switch (named as “SW2”).
Feiyu Tech