background image

Guilin Feiyu Electronic Technology Co., Ltd.

 

 

Guilin Feiyu Electronic Technology Co., Ltd        http://www.feiyu-tech.com        [email protected] 

Page 1 

                       

FY-DOS Manual For Fix-wing Control 

Installation & Operation

 

 

Dear Customer: 

Thank  you  for  choosing  DOS  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 experienced 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 DOS 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 e-mail directly to:

 [email protected]

 

 
 

1.

 

Operating principle 

 

Attitude Flight Stabilization System (AFSS) 

DOS module   

DOS is an inertial attitude measurement instrument. Now version V1.1 used for automated stabilization of 

fixed wing model aircrafts,but after upgrade firmware can be used for other aircraft and equipment control (For 

more details of DOS,please refer to the latest firmware and instrctions)

 

DOS  has  integrated  three-axis  gyro  ,three-axis  accelerometer,three  axis  magnetometer  and  barometric 

pressure sensor. DOS can accurately measuring flight attitude, the earth azimuth and through the barometer to 
measure relative altitude. Through the sensor measurement data combined with attitude control can realize 
the  Stabilized  Mode,  3D  Mode,  Return  To  Launch  Mode,  Fixed  altitude  and  Heading  lock  flight  Mode,  Auto 
Circling Mode and so on.

 

 

GPS module   

GPS module enables the DOS to calculate the flight course and exact location of the aircraft. DOS has 

three navigation mode :Return To Launch, Auto Circling and Heading lock,You can activate any of navigation 
modes after connecting GPS. 

Altitude control 

DOS use the barometer to measure relative height, through the elevator servo and throttle control to 

realize the flying altitude control.   

Heading control 

Without GPS module,DOS through the three axis magnetometer to measure the heading angle,use the 

aileron servo and rudder servo to control flying heading. But will be affected by the wind then deviate from the 

original route.   

Summary of Contents for FY-DOS

Page 1: ...rsion V1 1 used for automated stabilization of fixed wing model aircrafts but after upgrade firmware can be used for other aircraft and equipment control For more details of DOS please refer to the latest firmware and instrctions DOS has integrated three axis gyro three axis accelerometer three axis magnetometer and barometric pressure sensor DOS can accurately measuring flight attitude the earth ...

Page 2: ... operating stick the plane can automatically keep flight course at the same time lock flying height automatically correct flight course deviation easy to operate Auto Circling Mode Plane will keep the current height at a certain turn rate hovering flight look up a counterclockwise circle but it will not hover around a fixed point and may be away from the original hovering point because of the wind...

Page 3: ...e and you can change the flight height and flight parameter through the Ground control system GCS For more information please refer to the FY OSD and FY Data Radio manual 3 DOS standard configuration Standard configuration DOS control module 1 RC receiver connecting wires 1 USB cable 1 4P Y cable 1 Velcro double sided tape 2 Instruction manual 1 Optional accessory GPS module 1 Hornet OSD module Da...

Page 4: ...nfiguration please e mail us for enquiry service feiyu tech com The DOS 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 value 5 DOS interface Remote receiver input interface GPS and UART interface No 1 2 3 4 RC r...

Page 5: ...w Baud Rate 19200 Data bits 8 Stop Bits 1 Parity None Interface Features TTL level The pin interfaces connects to the Data Radio PC computer serial port or OSD module You can set DOS control parameters through this interface The port is also used to upgrade DOS firmware Please read the procedure for the firmware upgrade Attention DOS fixed wing aircraft firmware version V1 21 and above you can onl...

Page 6: ...th or without Rudder S1 S2 S3 S4 Differential Servo 1 Differential Servo 2 ESC throttle servo Rudder servo 3 Connection for V tail aircraft with Aileron S1 S2 S3 S4 S5 Aileron servo 1 Differential Servo 1 ESC throttle servo Differential Servo 2 Aileron servo 2 4 Connection for V tail aircraft without ailerons S1 S2 S3 S4 Differential Servo 1 Differential Servo 2 Throttle servo NULL 6 Power supply ...

Page 7: ...1 and Autopilot Mode a 3 position switch or dial knob SW2 Wire color Receive channel White bundled with red black Aileron Channel 1 Orange Elevator Channel 2 Green Throttle Channel 3 Yellow Rudder Channel 4 Brown SW 1 Any free channel controlled by A 3 way switch or dial knob Channel 5 Blue SW 2 Any free channel controlled by A 3 way switch or dial knob Channel 6 8 GPS interface and Features a Ins...

Page 8: ...ight through the combination Operators can know the DOS s operating mode by judging the different colors which the LED sends out and the flash frequency green light flash means GPS location fixed red and blue light indicate DOS working mode Under manual mode stabilization mode or 3D mode keep DOS in the static state If it sends out purple light it means DOS needs Gyro Reset Battery Motor THR OUT E...

Page 9: ...al levels of flight vibration However if the vibration experienced by the unit exceeds the acceptable level it will not work normally or may even stop working altogether D To keep vibration at a minimum install the DOS away from the engine or any other vibration sources E The included shock absorbing pads will meet the damping requirements for electric powered aircrafts and most gas nitro planes F...

Page 10: ...ch Mode mode Fixed altitude and Heading lock flight Mode and Auto Circling Mode which can be set by DOS setting software SW2 had priority to SW1 only when SW2 switch to cancel Null positon the SW1 can work After setting operator can ensure if it is correct by judging the color and flashing situation of the indicator lights SW1 default setting state Position 1 2 3 Servo signal output 900 1200US 120...

Page 11: ...when the plane steady and straight flight especially for the plane with attack horn it will be better to bed hedgehopping of its back to keep it in a horizon level d It may happen the following deviation problems if the installation has deviation If it has a little deviation operator can leveling the plane by adjusted Remote Control stick under the stabilized mode Plane roll remains level when in ...

Page 12: ...o counter this roll direction see below Same as when rolled to the left If the ailerons move correctly then you don t need to do the reverse Left aileron automatically moves upward Roll right Right aileron automatically moves downward Right aileron automatically moves upward Left aileron automatically moves downward Aileron Movement In Auto Stabilization Mode Roll left If the servo movement is inc...

Page 13: ...as follows ABM 3DMode ABM 3DMode ABM 3DMode ABM 3DMode ABM 3D Mode ABM 3D Mode there is a yellow lamp will light up once it s done D RUDDER CONTROL SURFACE MOVEMENT CHECK Turn your plane clockwise or counter clockwise to see the rudder movement below Turn left Rudder moves to the right Turn right Rudder moves to the left If the servo movement is incorrect you can choose one of these ways to change...

Page 14: ... even when the DOS remains stationary and you never activate the motor Note Carry out this re setting procedure only if the above occur We do not recommend regular re setting It is not necessary and not recommended The stabilizer unit does not need to be in a horizontal position during initialization However you must ensure there is no vibration during this process If suspect shaking occurred duri...

Page 15: ...the following picture is default parameter Port Connection columns Connect DOS to your PC from my computer device manager Port to find COM port select corresponding COM port Baud rate has to be 19200 click connect button Or just click Auto Connect button it will search automatically but it s takes time Note only after this has been done then you can set other settings Read and Write window Click R...

Page 16: ...e accurate as follows Install DOS on airplane after setting direction placed the airplane into level flight attitude use this function to record the current attitude which is the basic attitude in ABM If DOS is connected with Data Radio it can be used in flying Keep airplane level flight click it to finish the record attitude Link Mode setting window RC default choose RC receiver control RADIO cho...

Page 17: ...aileron it can be used for all kinds of flying wing plane 5 Elevons RUD NAV Navigation control with rudder only can be used for one that has separate rudder V tail aircraft with Aileron 3 V Tail Navigation control with aileron 6 V Tail RUD NAV Navigation control with rudder only can be used for V tail plane that has separate rudder Traditional layout aircraft with no Aileron 1 Normal The rudder ha...

Page 18: ...le and the down position is set to null the up position is used to select the navigation mode you like navigation mode Name Function Remark Null Deactivated Mode SW2 set to NULL flying mode is in sw1 Go Home Auto Return To Launch Mode Automatically return to launch point Line Fixed altitude and Heading lock flight Mode After release the operating stick it will lock heading and altitude Circle Auto...

Page 19: ...display more real time The connection diagram is as follows Under the version of V1 6 OSD only can be connected to the DOS s UART interface Note More information please login www feiyudz cn 18 Data Radio and GCS software Data radio baud rate 19200 DOS can set parameters and monitoring of flight data by data radio GCS software can www feiyudz cn monitor the flight altitude speed path data Can use t...

Page 20: ... RTL position Pay attention to set the throttle control stick to the cruise throttle position or you will have the danger of stall In DRRC mode because the use of Remote Adaptor will automatically detect radio communication is normal or not if the communication interrupt after about 5 seconds will automatic into Return To Launch RTL mode The firmware of the DOS above version V1 1 at RC remote cont...

Page 21: ...f now manual adjust the plane then switch to Stabilized Mode observe the flight state also you can directly in the Stabilized Mode to take off 8 Through the RC stick to trim the plane to level fly Manually to change the plane roll and pitch etc to observe the plane automatic balance situation If recover to balance is too quick don t feel flexible operation you can reduce corresponding channel cont...

Reviews: