Bartel BM-4 - Specifications (BM-4a)

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)

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