YU XIANG F02S Simulation Helicopter User Manual

Description:
The FO2S Simulation Helicopter is a model inspired by the classic movie helicopter Airwolf. It features highly realistic exterior details, movable side doors on both sides, shock-absorbing landing gear, and cool lighting effects. With remote control communication for two-way transmission and an intelligent flight control system, it is suitable for beginners to fly and serves as an excellent static model for display.

Product Usage Instructions:

Charging:
- Always use a charger compatible with batteries.
- Charge batteries away from flammable materials.
- Never leave charging batteries unattended.
- Never charge damaged batteries.
- Never alter batteries.
- Avoid touching or using hot batteries.

Flight Controls:
- Alleron tx stick – Control for rolling motion
- Elevator tx stick – Control for pitch motion
- Rudder tx stick – Control for yaw motion

Introduction

This model is based on the classic movie helicopter “Airwolf” featuring highly realistic exterior details. It has movable side doors on both sides, shock-absorbing landing gear, and cool lighting effects.
With remote control communication for two-way transmission and an intelligent flight control system, it is very suitable for beginners to fly.
At the same time, it is also an excellent static model for display.
It uses a built-in GPS / geomagnetic smart flight control system,direct drive motor, smart battery, multi-functional GPS flight self-sta-bilization mode, optical flow stabilization mode, and manual height setting mode. In addition, it also has a flight fence, one-button return,smart low power return, failsafe return, one-button landing, and other safe flight modes.
Please read the detailed instructions in this manual carefully before operating your helicopter, as this will help you understand the product. Incorrect operation can cause damage to the model aircraft, wasting your valuable time and money.

Accessories List

NOTE:
All descriptions, warranties, and other ancillary documents are subject to change at the sole discretion of our company. To obtain the latest product information, contact us.

WARNING:
Please read the entire user manual to familiarize yourself with the functions of the product before operation. Any failure to operate the product properly may result in damage to the product, loss of personal property, and cause serious injury. This is a complex product to operate for hobby purposes. It must be operated with care and common sense and requires some basic mechanical ability. Failure to operate this product in a safe manner may result in personal injury as well as damage to the product or other property. The product is not intended for use by children without direct adult supervision. This manual contains safety, operating, and maintenance instructions. Before assembly or use, please read and follow all instructions and warnings in the operator’s manual to operate properly and avoid damage or serious injury.

Safety Precautions and Warnings:

Age advice: not suitable for children under 14 years old. It is not a toy.

Always operate your model in an open space away from all kinds of vehicles, traffic and people.
Follow operating notices, warnings, and any supportable devices (chargers, batteries, etc).

Keep the product away from any chemicals. Keep children away from any small parts and electrical equipment.
Always keep away from water. Special attention is paid to the fact that this product is not waterproof and it will be damaged by moisture.

Do not put any part of the model in your mouth as this may result in serious injury or even death.
Do not operate your model with low voltage launcher batteries.

Helicopter Parameters

Warnings and Battery Usage Guide:

For safety purposes, please use the provided standard charger.

Warning: It is strongly recommended to use the included charger for battery charging.

Caution: Lithium batteries may be damaged and may not charge properly when the voltage drops below 7.4V.

Battery Charging

Connect the USB cable to a computer USB port or a power adapter.
Connect the USB’s other end (Type-C plug for Android) to the battery for charging.
During charging, the current battery level indicator will flash, and all four lights will remain solid when charging is complete.
Disconnect the charging connection after charging is complete.

Note: It is recommended to use a 5V 2A adapter for charging, as it will enable faster charging.

Warning:

To ensure maximum safety, monitor the battery while it is charging.
Do not allow children to charge the battery on their own, but ensure that an adult supervises the entire process.

Battery Functions and Indicators:

Warning:
After use, please turn off the battery as prolonged power-on time may shorten the battery lifespan.
After flying, remove the battery from the cabin to prevent damage due to over-discharge.

Remote Control Functions

Expert inverted mode:
The aircraft climbs beyond 8 meters. Switch to high – deflection mode, then manual flight mode. Press the inverted flight button for two seconds until two beeps, entering one – key inverted flight mode.
Quickly push the aileron stick left or right and return it to the center. The aircraft automatically performs a 180 – degree roll and hovers. In inverted flight, operation is the same as normal: push the throttle stick up to climb, push the elevator stick forward to move the aircraft nose – forward

Press the one – key inverted flight button again, quickly push the aileron stick, and the aircraft rolls back to normal flight.

Display Contents:

Description of the switch function:

SWA-5

Toggle the switch upwards, and the helicopter will record the current coordinates, then fly horizontally figure 8 based on these coordinates.
In GPS mode, toggle down the reset switch, and the aircraft records the current coordinates and flies in a horizontal circle around the center with these coordinates.

SWB-6

Switch up for auto-stabilization attitude mode
Switch down for completely manual mode, shielding the lower visual positioning mode and GPS mode. This mode is suitable for poor GPS signal, geomagnetic data interference and caused by the aircraft can not be accurately positioned or serious yaw, and for manual control and emergency landing use.

SWC-7

Pay special attention!

Switch up is motor unlock,normal flight should keep the switch on top.

Switch down is to lock the aircraft, it will stop all movements (including motors and servos), so use the lock switch carefully during the flight, the in-fight stop will cause the aircraft to crash,unless a serious fault is detected during the flight (such as air hit,aircraft not under control, rapid ascent or descent, aircraft not under attitude control), and SWB-6 switch off to manual mode still can not control the aircraft, then switch to lock mode in the air so as to force a crash.

SWD-8

Switch up is the lower visual positioning mode. The maximum flight height of the aircraft flying is 6 meters, suitable for GPS-poor scenarios.

Switch in the middle position is GPS positioning mode, which can achieve accurate positioning of the aircraft, stable flight and intelligent flight.
Switch down is the return, at this time the aircraft instantly and automatically return to land, after landing and turning off the motor.

Aircraft and remote control to frequency matching:
If you are purchasing a complete set of remote control and aircraft, they have been successfully frequency matched at the factory and you can directly power on and use them. In other cases, please use the following method for frequency matching.

Press and hold the camera button and the power button of the remote control,and it will continuously make beeps.
Power up the aircraft and turn on the smart battery, with the yellow light of the aircraft indicator flashing fast.

Keep the aircraft stationary within 0.5m distance from the remote control.
The remote control makes two consecutive beeps, and the display shows the aircraft pattern and RX power, which means the frequency matching is successful, here the indicator is restored.
If the frequency matching is not successful, please repeat the above steps and try again.

Note: After successful frequency matching, the indicator light will be displayed accordingly depending on the current remote control switch position, please refer to the light indication.

Description of the aircraft status indicators:

Fast flashing yellow light: Self-test of the aircraft

Long red light:
under visual positioning mode
Slow flashing green light: GPS star search and positioning
Long green light:
GPS positioning mode

Long yellow light:
manual attitude mode

Warnings & Exceptions

Slow flashing red light: Level 1 low power

Fast flashing red light: Level 2 low power
Flashing alternately between red and yellow lights: ground magnetic data error,need to recalibrate

Note: After frequency matching between the aircraft and the remote control, different mode lights will be displayed accordingly according to the remote control switch position indication.

Gyroscope Calibration:
After the successful frequency matching of the aircraft, please push the left joystick of the remote control (MODE2) to the uppermost corner and the lowermost corner of the right joystick for 2-3 seconds as shown in the picture,when the yellow light of the aircraft indicator flashes fast, the indicator has a fast flashing light to a long green light, calibration is complete.

When performing gyroscope calibration, be sure to place the aircraft on a level surface, otherwise it will affect the original calibrated gyroscope and it is not necessary tor the user to calibrate it again. Only it the initialization cannot be exited or if yaw exists in manual attitude mode, then the gyroscope needs to be recalibrated.
After the calibration is completed, the indicator light will be displayed according to the current remote control switch position, please refer to the indicator light description for details.

Compass Calibration:
Please put the successful frequency matching aircraft on the ground, the remote control (MODE2) as shown in the picture left-hand joystick is located in the lower left corner, the right-hand joystick is located in the upper right corner,now enter the gyroscope calibration, the indicator yellow light is flashing fast which means into calibration compass.

The aircraft rotates horizontally until a fast flashing yellow light changes to a fast flashing green light, then stand it up again and rotates until a long green light is on and the compass calibration is complete.

NOTE: Please recalibrate your compass for a safer and more stable flight on your first flight or change of flying site.
When calibrating, please keep the aircraft at a distance of more than 1 meter from the ground.
Do not calibrate in areas with strong magnetic fields, such as magnetic mines,buildings with underground reinforcement.
Please do not carry magnetic materials with you when you calibrate and do not do so in the vicinity of large pieces of metal.

Manual start/stop motor:

Start motor
The operation to swing outward joysticks action to start the motor, then immediately releasing them, accelerating joystick up to push more than 50%, the aircraft takes off.

Stop Motor
After landing, accelerate the joystick to the lowest position for over 3 seconds,and the motor will stop.
In-flight Stop
During the flight, if the SWC-7 switch is toggled down , the aircraft will stop all movements (including motors and servos), so please use the lock switch carefully during flight. Sudden stop in flight will cause the aircraft to crash,except when a serious malfunction is detected during flight (e.g. impact in the air, aircraft not under control, rapid ascent or descent, aircraft not under attitude control), and the SWB-6 switch to manual mode is still unable to control the aircraft, then switch to lock mode in the air to force a crash.

First Flight:
If you are not experienced with the FOS, please take a few minutes to learn about them before attempting your first flight.

Flight Control Interface Diagram

Flight Modes:
The FO2S allows GPS stabilization mode, optical flow stabilization mode and manual attitude mode, which can be switched by remote control.
The middle position of the remote control . GWD-8 switch, GPS stabilization mode, the use of GPS + geomagnetic module, to achieve precise hovering, stable flight, smart flight, accurate positioning of the aircraft, the maximum tilt angle of 25 °, the maximum flight speed of 5 m / s.

The upper position of the remote control GWD-8 switch, lower visual (optical flow) positioning mode, is suitable for environments without GPS signal or poor GPS signal. Turn on the lower visual positioning mode. Use lower vision positioning system on open and flat ground, limited flight height is 6m, flight speed is 1m/s in L gear, 2m/s in H gear.

Remote control SWB-6 switch toggle to the bottom position, open the manual attitude mode, this mode hand-controlled motion mode, shielding GPS and lower vision mode, can strengthen the ability to control the aircraft, but also for GPS geomagnetic data confusion, the aircraft is not controlled yaw situation,which can be urgently switched to hand-controlled mode emergency landing.

Notes on the lower visual model:

Please be aware of your surroundings. The visual system only plays a supporting role under limited conditions and cannot replace human judgment and control. Users should always pay attention to the surrounding environment during the flight, maintain control of the aircraft throughout and be responsible for the control.
The lower vision system tracks the lowered objects through the lens, and the limited takeoff height is 6 meters, please avoid taking off on the building roof. Flying over the building roof will cause the lower vision to fail and thus the aircraft will drift. In this case, you should immediately fly the aircraft back or immediately switch to GPS stabilization mode.

The lower vision system is unable to recognize surfaces and environments without textural features, as well as to work properly in low or excessive light intensity. The lower vision system does not work in the following scenarios.

Pure color surface (listed as pure black, pure white, pure red, pure green)
Surface with strong reflections or reflections.

Surface of water or transparent objects.
Surface of moving objects (listed as above the flow of people, shrubs and grasses blown by high winds)
Scenes with intense and rapid changes in lighting.

Extremely dark or bright object surfaces.
The surface of materials that have a strong absorption or reflection effect on infrared light.

Auto Return:
FO2S-GPS has the automatic homing function. The main homing mode is intelligent homing.
The intelligent low power homing is out of control. The aircraft has successfully recorded the homing point and, under the condition of good positioning, when the user starts automatic homing (the lowest position of SWD-8 switch, , the low power of the aircraft triggers intelligent low power homing. The remote controller and the aircraft lose the communication signal to trigger the out-of-control homing. The aircraft returns to the homing point and lands. When the aircraft enters the homing, the homing icon appears on the remote control display, and the sound prompts continuously

Return Point:
After the aircraft is powered on, the first satellite search will be a little longer, wait until the indicator light changes from a slow flashing green light to a long bright green light, the GPS icon and the number of satellites appear on the remote control display, and the remote control emits a beep before the motor can be unlocked in GPS mode. At this time,the aircraft also records the coordinates of the current takeoff point, recorded as the return landing point.

NOTE: If the number of satellites is not enough on transmitter screen it means the gps quality is not good. If the transmitter display screen does not appear GPS sign, the GPS mode can not be unlocked to take off. If the takeoff is in down visual mode and manual attitude mode, the aircraft is recorded to the position where the satellite mass is reached during the actual flight as the return point. This has a risk, users should circumvent such an operation.

Smart Return:
Smart return is initiated by the user, SWD-8 switch. toggle to the bottom position to open the smart return. The SWD-8 switch is turned to the middle GPS mode on the way to smart return, and the user can regain control of the aircraft after exiting smart return.

Straight Return:
When the user takes the initiative to control the smart return, the remote control will emit three beeps and the display will show the return icon. The aircraft will make a straight line return, the process is as follows:

The aircraft records the return point
Smart return is set off

The aircraft brakes first, and turns towards the return point to start the return flight.
- A. When the return distance > 15 meters, the aircraft adjusts the nose toward the return point, and then rises vertically to the set return height and return, if the current height is more than 10 meters then return directly; if the height is less than 10 meters, then rise to 10 meters height and return.
- B. When the return distance is 3-15m, the aircraft will adjust the nose and face the return point with the current altitude, if the current altitude is <5m, it will rise to 5m and then return.
- C. If the return distance is <3m, the aircraft will land directly.
The aircraft automatically flies back to the return point and then the landing begins.

Smart Low Power Return:
To avoid unnecessary danger due to insufficient power, FO2S-GPS will intelligently determine whether the current power is sufficient according to the flight location information. If the power is only enough to return or trigger the level 1 return voltage, the aircraft will automatically return.
When detected into the Level 1 low power, the aircraft will return to 25 meters from the takeoff point, 20 meters altitude range and hover, and as a flight fence. At this time, you can control the aircraft to fly inside this fence until it enters the Level 2 low power, the aircraft will land at the return point and power off.

Note: Upon entering the low power return, the remote control will have an alert and the display RX power flashing.
In a low power return state, the aircraft cannot be cancelled to return.

If the aircraft does not exceed 25 meters in distance and 20 meters in height before entering the Level 1 low power, it can be controlled to fly within this limit.
The aircraft goes too high and too far. When in a low power return, it is possible to go right into Level 2 low power and return directly to land.

NOTE: In lower vision mode and manual mode, the aircraft will not enter smart low power return and will perform the in-situ landing. Please pay close attention to the flight mode and the power of the aircraft.

Failsafe Return:
When the connection with the remote control is lost for more than 3 seconds (the aircraft pattern and RX power icon in the center of the remote control display disappears), the aircraft will return.
When connected to the remote control again and the signal continues (the aircraft pattern and Rx power appear on the remote control display), the aircraft will terminate the return flight and hover to wait for the operation command.

One-button Landing:
When long-press the One-button Landing, the flying aircraft will land in place and will not return to the take-off point. The remote control can control the aircraft during the landing process. During the process, you can push up the remote control accelerator joystick to release the landing command, or you can release it by pressing the button again. At this time, the aircraft is hovering and waiting for the operation command.

Round Flight
Toggle down the SWA-5 reset switch and the aircraft will record the coordinates and fly in a horizontal round flight with these coordinates as the center. Toggle down the switch or aileron/elevation joystick again to release the round flight.

Figure 8 Flight:
In GPS mode, the SWA-5 reset switch is toggled upward, the aircraft records the coordinates and flies an up and down Figure 8 Flight pattern with these coordinates. Toggle the SW-5 switch again to deactivate the current flight mode.

Flight Restriction:
For safety reasons, the FOS aircraft is limited to a flight altitude of 120 meters and an electronic fence with a flight distance of 350 meters.

Propeller Pitch Setting:
When users change the rudder or other major accessories, it may change the propeller pitch, and adjust them to help flight stability. Please follow the steps below to set it.

The remote control is connected to the aircraft for frequency matching.
Toggle the SWC-7 switch of the remote control to the bottom to lock the aircraft. toggle the SWA-5 switch down 8 times continuously to enter the propeller pitch setting. The remote control display only shows the aircraft and channel pattern.
Long press the camera button with a beep sound, then all servos enter the servo homing.

Adjust the corresponding servo through the joystick until the aircraft cross plate is horizontal and the propeller angle is 0 degrees, then toggle the remote control SWC-7 switch to the top, the remote control will resume full screen display and the propeller pitch setting is completed.

Note: The experienced person is needed to guide the propeller pitch setting.

Common Troubleshooting

ELRS Receiver Channel Switch Settings Corresponding to Flight

Modes times to enter binding me leceiver connects to power continuously 3

Following the T20 Open-source Communication Protocol Remote Control Settings Parameters:

Channel Settings

All the above parameter settings are based on the T20 open-source protocol remote control. For differences in the interface and parameters of specific remote controls, please refer to the remote control’s instruction manual in detail.

FAQ

Q: How do I charge the battery of the FO2S Simulation Helicopter?
A: To charge the battery, always use a charger compatible with the provided 7.4V 1200mAh 25C battery. Ensure to charge the batteries away from any flammable materials and never leave them unattended during charging.

Q: What are the flight controls of the FO2S Simulation Helicopter?
A: The helicopter is controlled using the following sticks on the transmitter: Alleron stick for rolling motion, Elevator stick for pitch motion, and Rudder stick for yaw motion.

Documents / Resources

YU XIANG F02S Simulation Helicopter [pdf] User Manual
F02S Simulation Helicopter, F02S, Simulation Helicopter, Helicopter

References

User Manual

YU XIANG F02S Simulation Helicopter

Product Information