Vickers F.B 5 "Gun Bus"

Role:Fighter
Manufacturer:Vickers Limited
First flight:17 July 1914
Introduced:5 February 1915
Retired:1916 (mainly coz of lack of speed)
Primary users:Royal Flying Corps Aéronautique Militaire
Number built:224
General characteristics
Crew: Two, pilot & observer/gunner
Length: 27 ft 2 in (8.28 m)
Wingspan: 36 ft 6 in (11.13 m)
Height: 11 ft 0 in (3.35 m)
Wing area: 382 ft² (35.5 m²)
Empty weight: 1,220 lb (555 kg)
Loaded weight: 2,050 lb (930 kg)
Powerplant: 1× Gnome Monosoupape 9-cylinder rotary engine, 100 hp (75 kW)
Performance
Maximum speed: 70 mph (61 knots, 113 km/h) at 5,000 ft (1,520 m)
Range: 250 mi (217 NM, 403 km)
Service ceiling: 9,000 ft (2,743 m)
Wing loading: 5.4 lb/ft² (26 kg/m²)
Power/mass: 0.05 hp/lb (0.08 kW/kg)
Endurance 4 hours 30 minutes [9]
Climb to 5,000 ft (1,520 m): 16 min
Armament
1 × 0.303 in (7.7 mm) drum-fed Lewis gun in observer's cockpit

Airco DH.2

Role:Fighter
Manufacturer:Airco
Designed by:Geoffrey de Havilland
First flight:July 1915
Primary user:Royal Flying Corps
Number built:453
Developed from:Airco DH.1
General characteristics
Crew: 1
Length: 25 ft 2½ in (7.69 m)
Wingspan: 28 ft 3 in (8.61 m)
Height: 9 ft 6½ in (2.91 m)
Wing area: 249 ft² (23.13 m²)
Empty weight: 942 lb (428 kg)
Max takeoff weight: 1,441 lb (654 kg)
Powerplant: 1× Gnome Monosoupape rotary engine, 100 hp (75 kW)
Performance
Maximum speed: 93 mph (150 km/h) at sea level
Range: 250 mi (400 km)
Service ceiling: 14,000 ft (4,265 m)
Rate of climb: 545 ft/min (166 m/min)
Wing loading: 5.79 lb/ft² (28.3 kg/m²)
Power/mass: 0.069 hp/lb (110 W/kg)
Endurance 2¾ hours
Climb to 5,000 ft (1,500 m) 24 minutes 45 seconds
Armament
1 × .303 in (7.7 mm) Lewis gun using 47-round drum magazines