title: Akaflieg Berlin B5
text: # Akaflieg Berlin B5
  
  The Akaflieg Berlin B5 was a glider built in Germany in the late 1930s. It featured a high-wing, cantilever sailplane configuration of all-wood construction, with cantilevered gull-wings, retractable landing-gear, all-moving-tail, dive air-brakes.
  
  ## Specifications (B5)
  
  Data from , Flugzeug-Typenbuch. Handbuch der deutschen Luftfahrt- und Zubehör-Industrie 1944
  
  General characteristics
  
  * Crew: 1
  * Length: 6.15 m (20 ft 2 in)
  * Wingspan: 15 m (49 ft 3 in)
  * Height: 1.24 m (4 ft 1 in)
  * Wing area: 11 $m^2$ (120 sq ft)
  * Length de-rigged: 7.28 m (24 ft)
  * Width de-rigged (without tailplane): 1 m (3 ft 3 in)
  * Width de-rigged (with tailplane): 2.5 m (8 ft 2 in)
  * Height de-rigged: 1.24 m (4 ft 1 in)
  * Aspect ratio: 20.45
  * Airfoil: root Göttingen 549 ; mid span Göttingen 497 ; tip Göttingen 497
  * Empty weight: 140 kg (309 lb)
  * Gross weight: 225 kg (496 lb)
  
  Performance
  
  * Never exceed speed: 228 km/h (142 mph, 123 kn)
  * Aerotow speed: 120 km/h (75 mph; 65 kn)
  * g limits: +8 (ultimate)
  * Maximum glide ratio: 30.5:1 at 76 km/h (47 mph; 41 kn)
  * Rate of sink: 0.67 m/s (132 ft/min) at 64 km/h (40 mph; 35 kn)
  * Wing loading: 20.45 $kg/m^2$ (4.19 lb/sq ft)
  