Selecting RC Airplane Electronics
The L-1011 Airliner FrSKY Servo Placement Plan
The primary electronics and servo stack for the 1:20 scale L-1011 UAV will be driven by FrSKY electronics and components.
BLS5405H
The unique “flying-wing” design of the L-1011 means the entire horizontal stabilizer moves to control this big boy’s pitch. The BLS5405H will be responsible for handling this critical flight control system.
Specs:
Full metal gears & CNC aluminum housing
Programable by F Port 2.0
Real time Telemetry
4.8-8.4V operating range
360° travel
72 grams with 26.2kgf per cm @ 8.4V
3D Model of BLS5405H
HV5611
The aircraft’s 4 ailerons will be equipped with the FrSKY Xact HV6611 coreless servos. It is a rare configuration fro RC airplanes to have 4 ailerons, but to stay more true to scale, this bird will fly with 4 fully functional ailerons.
Specs:
8.4V capable - 3.7-8.4V Operating range
CNC aluminum case & metal gears
Built in dual ball bearings with potentiometer sensor
Supports over current and over hot monitoring alarm
Supports F Port 2.0, SBUS, PWM
333Hz max refresh rate
HV5701
The 4 H5701 Xact servos will be responsible for articulating the aircrafts spoilers in addition to opening and closing the landing gear bay doors.
Specs:
6.5g
High precision with 0 slop
Built in hall sensor
Programmable travel angle
CNC aluminum case & metal gears
Telemetry: current/temperature/ travel angle
Port Types: FP2 (FBUS), PWM, SBUS
Free Downloads
FrSky HV5701 Servo Model CAD Files
HV5403
To drive the large rudder on this scale airliner, the HV5403 will be tasked with managing yaw
Specs:
77.5 Grams with 49.4kfg per cm max torque @ 8.4V
Brushless motor type
Digital high resolution magnetic sensor
4.8-8.4V operating range
333Hz max refresh rate
All metal gears & CNC aluminum housing
360° travel
Programmable through F Port 2.0 + Telemetry
RB-30
The heart of the onboard electronics system is FrSKY’s RB-30. Boasting 24 channel servo interface, triple receiver capability, dual power input for extra redundancy, flight stabilization.
Specs:
Dual power and triple receiver capable
High voltage servos supported with up to 24 PWM servos
Overload protection on all channels
Built in Gyro sensor for flight stabilization
Compatible with FrSKY S.Port products
Black Box Data recording
Non Contact Switch
100 grams with 11 ~ 26V input voltage range
SR8 PRO receivers
The dual SR8 Pro receiver set up will increase the channel capability of the aircraft when communicating with the transmitter.
Specs:
15 grams
3.5 - 10V operating range
8 High precision PWM channels
>2km control range
Supports 16 SBUS channels with 24 channel expected in an update
Compatible with all FrSKY Access transmitters
