6 x EDF - 1:12.4 SCALE - REQUIRES DUAL-RATES/EXPO CONTROL MODESSCALE FLIGHT - STABLE - RESPONSIVE
Model data:
Type: Scale RC Model based on the XB-70
Scale: 1:12.4
Length: 4.57 m ( 15 feet)
Wingspan: 2.55 m (8.36 feet)
Weight: 75 lbs / 34 Kg
Engine: 6 x 90mm EDF / 12 blade fan / (9.2 lbs / 4.17 kg per engine)
Electrical System (Suggested): 3 x 12S 22,000 mAh LiPo in parallel. Six 90mm 12-blade EDF units operating at 44.4V nominal 102A per unit, ~612A total system draw, ~27 kW combined output. Battery stack rated at 2,700 Wh. Full-power endurance: approximately 6 minutes at the limit. Max battery temp ceiling: 80°C. Real-world numbers will depend on how hard you push it.
Performance/Limitations: Maximum speed: 95 knots / 109 mph / 176 km/h (sea level, full power, straight and level). Estimated Vne: ~100 knots / 115 mph / 185 km/h.
Channels:
- Throttle
- Rudder
- Elevator
- Ailerons
- Control modes (Full, Dual-Rates/Expo) - Required for realistic flying.
- Gears
- Gear Brakes
Pilot Notes:
General: The XB-70X is a docile and draggy aircraft. At speed it flies with solid stability and predictable response. At slow speeds it feels light and very predictable.
Controls: Dual rates are recommended for scale flying.
Power/Energy management: requires constant balancing act. The high drag profile combined with relatively low weight for its size demands higher power settings than the aircraft's appearance suggests during normal flight. Speed bleeds off quickly and effortlessly when power is reduced. Unpowered glide produces extensive drag from the six standing 90mm EDF units and energy bleeds off fast.
At low speed the XB-70X tolerates high AOA without stalling. On landing, manage nose attitude carefully to avoid tail strike. During high speed passes, use dual-rates and avoid abrupt pull-ups. The airframe will follow the input and structural limits can be exceeded leading to catastrophic structural failure.
