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CAC CA-15 (Kangaroo)


Fighter-Interceptor / Bomber Escort Prototype (1946)


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Jump-to: Specifications

The CAC CA-15 Kangaroo was the most advanced fighter design to come out of Australia during World War 2.



Authored By: Staff Writer | Last Edited: 06/13/2018 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.
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Much of Australian industry was evolved and put to the test during World War 2 (1939-1945). Its aviation sector eventually produced a handful of viable developments including the nationally-important CAC "Boomerang" by the Commonwealth Aircraft Corporation which had been established in 1936. In 1943, as the Pacific War continued to rage on near the Australian border, a new initiative was put into action involving a single-seat, single-engine monoplane fighter utilizing all-metal stressed-skin construction. Power for the aircraft was to come from the American-made Pratt & Whitney R2800-10W "Double Wasp" turbocharged radial piston engine of 2,300 horsepower output. The engine proved a monumental success during the war as it powered such famous types as the Martin B-26 "Marauder" medium bomber, the Curtiss C-46 "Commando" transport, and the Republic P-47 "Thunderbolt" fighter. Unfortunately this also meant that the engine continued to be in great demand outside of Australia.

The new endeavor was the CA-15 intended for the interceptor and bomber escort roles. CAC engineers, fresh off the success of their Boomerang program, elected for a well-streamlined and deep fuselage with the engine accordingly situated at front, the cockpit at center and a conventional single-finned tail unit at rear. The wing mainplanes were low-mounted and straight near midships and featured clipped tips. The pilot sat under a teardrop-style canopy offering excellent vision above and to the sides of the aircraft - though the design suffered as most wartime fighters did - the long nose and mainplanes obstructed much of vision towards critical quadrants about the aircraft. A "tail-dragger" retractable undercarriage was installed and a four-bladed propeller unit was fitted to the engine. The CA-15 showcased some of the form of the classic North American P-51 Mustang through its general appearance which included a ventral air scoop.

When it became apparent that the Double Wasp radial engine was not to be had in the numbers required, the decision was made to adopt an inline engine instead and this became the British Rolls-Royce Griffon 61 series liquid-cooled system. This added some complexity to the internal workings and overall operation of the aircraft. The shift in powerplant also did little to move the program along.

In August of 1945, the Empire of Japan formally capitulated and brought an end to the War in the Pacific for September. The CA-15 had still not yet flown and the massive military drawdown that followed the conflict cast a shadow on the slowly evolving indigenous Australian fighter project. Nevertheless, work on the product continued to the point that a first flight was finally had on March 4th, 1946. The aircraft featured its inline set in the nose and a streamlined spinner managed the four-bladed propeller unit. The CA-15 was a good initiative for the country and its most advanced wartime design to appear. In testing, it was able to see speeds reaching near 450 miles per hour.

On December 10th of that year, the sole working prototype suffered a failure of its undercarriage hydraulics when attempting to land at Point Cook - leaving the main legs only partially lowered. After dumping fuel, the test pilot crash landed the aircraft. The pilot survived with a few bumps and scrapes but the aircraft suffered considerable damage in the exercise. Despite the setback, CA-15 was repaired and readied to be flown again and topped diving speeds over 500 miles per hour in further flights.

While the program continued forward, albeit at a much-reduced pace in peacetime, the product was no longer in need and served mainly in a data collecting role for most of its time aloft. The global shift to jet-powered aircraft did many fighter programs such as the CA-15 in at the end of the war and in the period immediately following. With that, the only completed prototype of the CA-15 was discarded and ultimately scrapped, lost to the pages of Australian aviation history. The project was formally ended in 1950.

As finalized, the CA-15 was given a length of36.1 feet and a wingspan of 36 feet with a height nearing 14.1 feet. Empty weight was 7,540 pounds and Maximum Take-Off Weight (MTOW) reached 12,340 pounds. Officially performance numbers included a maximum speed of 448 miles per hour, a range of 1,150 miles, a service ceiling of 39,000 feet and a rate-of-climb of 4,900 feet per second.

While never officially named, the CA-15 ultimately garnered itself the nickname of "Kangaroo" in keeping with Australian aircraft naming conventions.

Proposed armament included 0.50 caliber (12.7mm) heavy machine guns, three per wing, with 250 rounds afforded per gun unit. The wings were also to receive provision for five high-explosive rockets each (ten total) and a hardpoint to carry up to 2 x 1,000 pound conventional drop bombs.

Specifications



Service Year
1946

Origin
Australia national flag graphic
Australia

Status
CANCELLED
Development Ended.
Crew
1

Production
1
UNITS


Commonwealth Aircraft Corporation (CAC) - Australia
National flag of Australia Australia (cancelled)
(OPERATORS list includes past, present, and future operators when applicable)
Air-to-Air Combat, Fighter
General ability to actively engage other aircraft of similar form and function, typically through guns, missiles, and/or aerial rockets.
Interception
Ability to intercept inbound aerial threats by way of high-performance, typically speed and rate-of-climb.
Ground Attack (Bombing, Strafing)
Ability to conduct aerial bombing of ground targets by way of (but not limited to) guns, bombs, missiles, rockets, and the like.
Close-Air Support (CAS)
Developed to operate in close proximity to active ground elements by way of a broad array of air-to-ground ordnance and munitions options.
X-Plane (Developmental, Prototype, Technology Demonstrator)
Aircraft developed for the role of prototyping, technology demonstration, or research / data collection.


Length
36.1 ft
(11.00 m)
Width/Span
36.0 ft
(10.97 m)
Height
14.2 ft
(4.32 m)
Empty Wgt
7,562 lb
(3,430 kg)
MTOW
12,346 lb
(5,600 kg)
Wgt Diff
+4,784 lb
(+2,170 kg)
(Showcased structural values pertain to the base CAC CA-15 (Kangaroo) production variant)
Installed: 1 x Rolls-Royce Griffon 61 12-cylinder inline liquid-cooled engine developing 2,035 horsepower.
Max Speed
447 mph
(720 kph | 389 kts)
Ceiling
38,993 ft
(11,885 m | 7 mi)
Range
1,150 mi
(1,850 km | 3,426 nm)
Rate-of-Climb
4,900 ft/min
(1,494 m/min)


♦ MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030


(Showcased performance specifications pertain to the base CAC CA-15 (Kangaroo) production variant. Compare this aircraft entry against any other in our database. View aircraft by powerplant type)
PROPOSED STANDARD:
6 x 0.50 caliber M2 Browning heavy machine guns in wings (three per wing).

PROPOSED OPTIONAL:
10 x High-explosive rockets (five per wing)
2 x 1,000lb conventional drop bombs (one per wing)
2 x Jettisonable fuel tanks (one per wing, assumed)


Supported Types


Graphical image of an aircraft medium machine gun
Graphical image of an aircraft heavy machine gun
Graphical image of aircraft aerial rockets
Graphical image of an aircraft conventional drop bomb munition
Graphical image of an aircraft external fuel tank


(Not all ordnance types may be represented in the showcase above)
Hardpoint Mountings: 2


CA-15 - Base Product Designation
"Kangaroo" - Unofficial Name


General Assessment
Firepower  
Performance  
Survivability  
Versatility  
Impact  


Values are derrived from a variety of categories related to the design, overall function, and historical influence of this aircraft in aviation history.
Overall Rating
The overall rating takes into account over 60 individual factors related to this aircraft entry.
34
Rating is out of a possible 100 points.
Relative Maximum Speed
Hi: 500mph
Lo: 250mph
This entry's maximum listed speed (447mph).

Graph average of 375 miles-per-hour.
City-to-City Ranges
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
CAC CA-15 (Kangaroo) operational range when compared to distances between major cities (in KM).
Max Altitude Visualization
Small airplane graphic
Design Balance
The 3 qualities we look at for a balanced aircraft design are altitude, speed, and range.
Aviation Era Span
Pie graph section
Pie graph section
Showcasing era cross-over of this aircraft design.
Unit Production (1)
1
36183
44000
This entry's total production compared against the most-produced military and civilian aircraft types in history (Ilyushin IL-2 and Cessna 172, respectively).
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