CAC CA-15

CA-15 "Kangaroo"
Role	Fighter
Manufacturer	Commonwealth Aircraft Corporation
First flight	4 March 1946
Retired	1950
Status	Scrapped
Primary user	Royal Australian Air Force
Number built	1

The CAC CA-15, also known unofficially as the CAC Kangaroo, was an Australian propeller-driven fighter aircraft designed by the Commonwealth Aircraft Corporation (CAC) during World War II. Due to protracted development, the project was not completed until after the war, and was cancelled after flight testing, when the advent of jet aircraft was imminent.

Design and development

During 1943, following the success of CAC and chief designer Fred David, in rapidly designing and mass producing the small Boomerang fighter for the Royal Australian Air Force (RAAF), CAC began design work on a fully fledged interceptor and bomber escort.

Although the CA-15 bore a superficial resemblance to the North American P-51 Mustang,^[1] the CAC design was not based directly on the US aircraft and had quite different performance objectives and dimensions.^[1] For instance, David had been impressed by assessments of captured Focke-Wulf Fw 190s^[2] and intended using a radial engine (see below) rather than the inline engines used in fighters like the Mustang. In fact, development of the CA-15 was slowed by a recommendation from CAC head Lawrence Wackett, that the company build Mustangs under licence, rather than bear the cost of developing a unique design. By the later stages of its development, it was believed that the CA-15 would have capabilities enabling it to replace the P-51.^[3]

At first, the CAC designers planned to use the 2,300 hp (1,715 kW) radial Pratt & Whitney R-2800, with a turbocharger. However, that engine became unavailable, causing further delays in development, and it was decided to fit an in-line Rolls-Royce Griffon Mk 61 (2,035 hp/1,517 kW). Engines for a prototype were leased from Rolls-Royce.^[3] It was intended that any production engines would have a three-speed supercharger.

Operational history

The CA-15, piloted by Flt Lt J.A.L. Archer, over Melbourne, photographed from the rear turret of an Avro Lincoln bomber.

Development was further slowed by the end of the war, with the prototype flying for the first time on 4 March 1946.^[3] The prototype was assigned RAAF serial number A62-1001 and was handed to the air force for tests. According to aviation historian Darren Crick, it achieved a calibrated level flight speed of 448 mph (721 km/h) at 26,400 ft (8,046 m).^[3] On 25 May 1948, Flt Lt J. A. L. Archer reportedly achieved a speed of 502.2 mph (803 km/h) over Melbourne, in a gentle dive of 4,000 ft (1,200 m).

By this time, however, it was clear that jet aircraft had far greater potential and no further examples of the CA-15 were built. The prototype was scrapped in 1950, and the engines were returned to Rolls-Royce.^[3]

Operators

 Australia

• Royal Australian Air Force

Specifications

Data from Commonwealth CA-15: The 'Kangaroo' Fighter^[4]

General characteristics

• Crew: one
• Length: 36 ft 2½ in (11.04 m)
• Wingspan: 36 ft 0 in (10.97 m)
• Height: 14 ft 2 in (4.32 m)
• Wing area: 253 sq ft (23.50 m²)
• Empty weight: 7,540 lb (3427 kg)
• Loaded weight: 9,500 lb (4,309 kg)
• Max takeoff weight: 12,340 lb (5,597 kg)
• Powerplant: 1 × Rolls-Royce Griffon liquid-cooled V12 engine, 2,035 hp (1,517 kW) at 7,000 ft (2,134 m)

Performance

• Maximum speed: 448 mph (390 knots, 721 km/h) at 26,400 ft (8,050 m)
• Range: 1,150 mi (1,000 nmi, 1,850 km) on internal fuel
• Service ceiling: 39,000 ft (11,887 m)
• Rate of climb: 4,900 ft/min (24.9 m/s)

Armament

• Guns: 6 × 0.50 in. (12.7 mm) machine guns (250 rounds each)
• Rockets: provision for 10 × rockets
• Bombs: 2 × 1,000 (450 kg) bombs

See also

Aircraft of comparable role, configuration and era

• Curtiss XP-62
• Grumman F8F Bearcat
• Hawker Sea Fury
• Kawanishi N1K-J
• Kawasaki Ki-100
• Lavochkin La-7
• Martin-Baker MB5
• Nakajima Ki-84
• Republic XP-72
• Supermarine Spiteful
  

Related lists

• List of fighter aircraft
  

References

Notes

1. ^ ^{a b} Air Enthusiast October 1972, p. 179.
2. ^ Ross 1995, p. 321.
3. ^ ^{a b c d e} Crick 2003.
4. ^ Donald 1996, p. 121.

Bibliography

• Crick, Darren. "RAAF A62 CAC CA-15" adf-serials.com, 2003.
• Donald, David. "Commonwealth CA-15: The 'Kangaroo' Fighter". Wings of Fame, Volume 4, 1996, pp. 118–121. London: Aerospace Publishing. ISBN 1-874023-71-9. ISSN 1361-2034.
• Francillon, René J. The Royal Australian Air Force & Royal New Zealand Air Force in the Pacific. Fallbrook, California: Aero Publishers Inc., 1970. ISBN 0-8168-0308-0.
• Green, William, ed. "Antipodean Finale". Air Enthusiast, October 1972, Vol. 3. No 4, pp. 178–180.
• Ross, A.T. Armed and Ready: The Industrial Development and Defence of Australia 1900-1945. Wahroonga, New South Wales, Australia: Turton & Armstrong, 1995. ISBN 0-908031-63-7.
• Wilson, Stewart. Wirraway, Boomerang & CA-15 in Australian Service. Fyshwick ACT, Australia: Aerospace Publications Pty. Ltd., 1991. ISBN 0-958797-88-9.

External links

• RAAF Museum, "A62 CAC CA 15"
• Felix Noble, "CAC CA-15"