TURBINE HELICOPTER - 1:4.9 SCALE - CHALLENGINGSCALE/COMPOSED FLIGHT - NOT FOR BEGINNERS
Model data:
Type: Scale RC Model based on the KA-27 helicopter
Scale: 1:4.9 (helicopter) / 1:6 (rotor).
Main Rotor diameter: 2 x 2.5 m / 98.42"
Fuselage Length: 1.93 m ( 6.33 feet)
Weight: 60 lbs / 27.21 Kg
Engine: Jakadofsky Turboshaft Engine PRO 5000 class turbo-shaft engine / ~5.2 kW max.
Fuel tank: 2.85 L / 5 lbs
Fuel consumption: up to 175 ml/min / 2.8 gph
Channels:
- Collective
- Yaw
- Cyclic - pitch
- Cyclic - roll
- Control modes (Full, Dual-Rates/Expo) - Use Full mode for normal flying.
Pilot Notes:
General: The Ka-27X is a highly engineered coaxial RC helicopter, powered by real counter-rotating rotor physics.
The aircraft is heavy and not overpowered (it is the heaviest helicopter in RCE Vol.1). Collective input must be managed with anticipation; the rotor system requires time to respond to power changes, and a late or abrupt collective reduction will result in a sink-with-power situation that leaves no room for recovery close to the ground. Fly it ahead of the aircraft, not reactively.
The Ka-27X is not designed for high speed forward flight. Pushing it into the high speed regime introduces instability that is not easily managed, with tendency of pitch-up departure. As speed increases, pay extra attention to cyclic inputs (pitch up/down). It is not forgiving. Treat it as what it is: a heavy, capable, scale helicopter, not a high-performance, agile helicopter.
Controls: Full control throws recommended. Smooth, anticipatory inputs throughout.
