Boulton & Paul P.7 Bourges

1st Flight 1918

The Boulton & Paul P.7 Bourges was a prototype British twin-engine biplane day bomber.

Despite demonstrating excellent performance and maneuverability, only three prototypes were built, due to the poor post war economy, no further aircraft were built.

Specifications

Crew

Three

Length

37 ft 0 in (11.28 m)

Wingspan

57 ft 4 in (17.48 m)

Height

12 ft 0 in (3.66 m)

Wing area

738 sq ft (68.6 m2)

Airfoil

RAF-15

Empty weight

3,820 lb (1,733 kg)

Gross weight

6,326 lb (2,869 kg)

Fuel capacity

190 imp gal (230 US gal; 860 L)

Powerplant

2 × ABC Dragonfly I 9-cylinder air-cooled radial engine, 320 hp (240 kW) each

Performance

Maximum speed

123.5 mph (198.8 km/h, 107.3 kn) at 6,500 ft (2,000 m)

Endurance

9 hr 15 min

Service ceiling

20,000 ft (6,100 m)

Time to altitude

25 min 25 s to 15,000 ft (4,600 m)

Armament

Guns

1 or 2 × .303 in (7.7 mm) Lewis guns each in nose and mid-upper positions

Bombs

4× 230 lb (100 kg).

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