Hansa-Brandenburg W.25
# Hansa-Brandenburg W.25

The Hansa-Brandenburg W.25 was a German floatplane fighter of the World War I era, designed and built by Hansa-Brandenburg.

## Design and development

The W.25 was an improved version of the KDW with a modified biplane cellule with conventional inter-plane struts. One prototype was built (s/n 2258), and the aircraft competed with the Albatros W.4, but the W.4 demonstrated a better flight performance. Therefore, Hansa-Brandenburg returned the W.25 to its factory for modification with a second pair of ailerons on the lower wing. However, the W.25 was not ordered into production because the Imperial German Navy lost interest in single-seat fighters.

## Specifications (W.25)

Data from , German Aircraft of the First World War

General characteristics

* Crew: 1
* Length: 8.8 m (28 ft 10 in)
* Wingspan: 10.4 m (34 ft 1 in)
* Height: 3.45 m (11 ft 4 in)
* Wing area: 36.53 $m^2$ (393.2 sq ft)
* Empty weight: 918 kg (2,024 lb)
* Gross weight: 1,182 kg (2,606 lb)
* Powerplant: 1 × Benz Bz.III 6-cylinder water-cooled in-line piston engine, 110 kW (150 hp)
* Propellers: 2-bladed fixed-pitch propeller

Performance

* Maximum speed: 160 km/h (99 mph, 86 kn)
* Endurance: 2 hours 30 minutes
* Time to altitude: 1,000 m (3,300 ft) 6 minutes 30 seconds

Armament

* Guns: 2 x fixed forward-firing synchronised 7.92 mm (0.312 in) LMG 08/15 Spandau machine guns
