Specifications (BM-4a)
Data from
General characteristics
- Crew: 2
- Length: 7.22 m (23 ft 8 in)
- Wingspan: 10.175 m (33 ft 5 in)
- Height: 2.93 m (9 ft 7 in)
- Wing area: 25 m2 (270 sq ft)
- Empty weight: 538 kg (1,186 lb)
- Gross weight: 359 kg (791 lb)
- Powerplant: 1 × Le Rhône 9C 9-cyl. air-cooled 9-cylinder rotary piston engine, 60 kW (80 hp)
Performance
- Maximum speed: 125 km/h (78 mph; 67 kn) at sea level
- Cruising speed: 110 km/h (68 mph; 59 kn)
- Stall speed: 57 km/h (35 mph; 31 kn)
- Endurance: 3 hours
- Service ceiling: 2,820 m (9,252 ft)
- Rate of climb: 1.9 m/s (370 ft/min)
- Time to altitude: 1,000 m (3,281 ft) in 9 minutes 42 seconds
- Wing loading: 31.6 kg/m² (6.5 lb/sq ft)
- Power/mass: 0.101 kW/kg (0.0615 hp/lb)
Read more about this topic: Bartel BM-4