01
Aircraft Overview & Class Specifications
Engineered to bridge the gap between micro helis and heavy 550/700-class airframes, the Goosky RS4 Venom prioritizes structural rigidity, low part-count mechanical simplicity, and high power-to-weight efficiency.
| Specification Parameter | Design Target / Value |
|---|---|
| Aircraft Class | 380 / 400-Size Electric 3D Helicopter |
| Main Rotor Blade Length | 380mm – 384mm |
| Tail Rotor Blade Length | 68mm – 70mm |
| Power System Configuration | 6S LiPo (22.2V Nominal) |
| Target Headspeed Range | 3,200 RPM (Sport/Big Air) to 3,800+ RPM (Hard 3D) |
| Drivetrain System | Helical Main Mesh + Belt-Driven Tail Rotor |
02
Mechanical & Frame Architecture
Airframe & Chassis Construction
- Integrated Monocoque/Split Frame: High-grade composite side plates paired with precision CNC-machined 6061-T6 aluminum structural inserts to optimize torsional rigidity under high-g collective pitch pumps.
- Battery Tray Integration: Quick-release slide-in battery tray system with positive-lock retention, ensuring zero-play mass centralization and rapid pack swaps.
Rotor Head Geometry
- Rigid DFC / Semi-FBL Head Design: Ultra-low center of gravity (CG) rotor head optimized for direct, zero-slop mechanical response and minimal phase lag.
- Spindle & Dampening: Heavy-duty hardened steel main shaft and spindle shaft utilizing high-durometer elastomer dampers.
03
Power System & Electronics Integration
Power System Note
Pairing the RS4 Venom with a high-bandwidth digital governor is essential for maintaining precise headspeed lock through aggressive collective pumps on 380mm rotor discs.
Motor & ESC Selection
- Recommended Motor: High-torque outrunner brushless motor (2828/3215 class) optimized for rapid transient response on 6S LiPo setups.
- Electronic Speed Controller: 60A to 80A ESC featuring high-speed fast-response governor loops.
04
Flight Dynamics & Tuning Notes
PID Tuning Baseline (Rotorflight / Modern FBL)
- P-Gain: Keep moderate-to-high to maintain a locked-on feel without high-frequency oscillation.
- D-Term: Essential for damping out quick stop oscillations after hard cyclic snaps.