CAC Ca-4 Ca-11 Woomera

CAC Woomera

The CAC CA-4 and CAC CA-11 Woomera, was an Australian bomber aircraft that was designed and constructed by the Commonwealth Aircraft Corporation during World War II. The order for the Woomera was cancelled before it became operational with the Royal Australian Air Force (RAAF).

The Ca-4 crashed in January 1945, after which the design of the aircraft was improved, and re-designated Ca-11. Orders for the Woomera were cancelled once a supply of modern aircraft became available from the UK and USA.

General characteristics

Crew: 3 (pilot, bomb aimer/navigator, rear gunner)
Length: 39 ft 7 in (12.07 m)
Wingspan: 59 ft 2½ in (18.05 m)
Height: 18 ft 2 in (5.53 m)
Wing area: 440 ft² (40.9 m²)
Empty weight: 12,756 lb (5,798 kg)
Max. takeoff weight: 22,885 lb (10,402 kg)
Powerplant: 2 × Pratt & Whitney R-1830-S3C3-G Twin Wasp 14-cylinder two-row radial engine, 1,200 hp (895 kW) each

Performance

Maximum speed: 282 mph (454 km/h, 247 knots)
Range: 2,225 mi (3,580 km, 1,950 nm) (with external tank and one torpedo)
Service ceiling: 23,500 ft (7,165 m)
Rate of climb: 2,090 ft/min (10.6 m/s)

Armament

Guns:
- 2 × .303in Browning machine guns in the nose
- 2 × 20 mm Hispano MkII cannon in the nose
- 4 × .303 Browning machine guns in two rear-firing remotely controlled barbettes
- 1 x .303 Vickers K machine gun in a ventral position
Bombs:
- 4× 250 lb (113 kg) bombs internally in engine nacelle bays
- and 4× 500 lb (224 kg) bombs
- or 2× Mk XII, Mk XV or Mk 13 aerial torpedoes mounted under the fuselage
- or 1× torpedo and 1× 293 imp gal (352 USG) external fuel tank mounted under the fuselage