Advertisements

Aviation / Aerospace

CAC Wirraway

Multirole / Trainer Aircraft [ 1939 ]

The CAC Wirraway was an indigenous Australian development of the North American NA-16 trainer platform.

Authored By: Staff Writer | Last Edited: 08/08/2018 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

High-angled front right side view of the CAC Wirraway in flight

GO TO SPECIFICATIONS [+]

Advertisements

The CAC Wirraway ("Challenge" in the Woiwurrung native tongue) became one of Australia's primary trainer aircraft from 1939 onwards until being replaced by the CAC Winjeel in 1955. The type proved versatile enough to fulfill a number of roles including that of emergency fighter, dive bomber, trainer and reconnaissance aircraft, making her a true multirole, multi-faceted airframe. By the time of the Japanese attack on Pearl Harbor in December of 1941, seven squadrons of the Royal Australian Air Force were fielding Wirraways in their inventories.

In 1936, Australia sent three of her air force officers out of the country to find a suitable modern aircraft for localized license production. Lacking a respectable war-production infrastructure by the time of World War 2 and an ever-increasing Japanese presence throughout the Pacific, the Australians quickly settled on a pair of North American Aviation NA-16 trainers for evaluation and subsequent production as multirole platforms to fulfill a variety of needs. The North American NA-16 was the company's first true trainer aircraft and one that would ultimately be produced in an eye opening 17,000 examples by the end of her tenure.

The two examples were purchased from North American Aviation and became NA-16-1A (with fixed undercarriage) and NA-16-2K (retractable undercarriage) serving as the Australian program's prototypes. The NA-16-2K was eventually selected as the principle production model with a few subtle changes in design, these including a reinforced sub-structure consistent with the rigors of the bombing role and improved offensive/defensive capabilities by the inclusion of 2 x 7.7mm machine guns as opposed to the NA-16's sole gun. Production of the initial aircraft, designated in the Australian inventory as the "CA-1 Wirraway", was handled out of the Commonwealth Aircraft Corporation (CAC) facility at Fisherman's Bend in Victoria. First flight of the Australian system was recorded on March 27th, 1939 and production followed. Like the airframe, the selected powerplant was also American in origin - essentially the license produced Australian version of the Pratt & Whitney R1340 Wasp radial piston engine. From 1939 to 1946, some 755 Wirraways were ultimately delivered from the CAC facility into service with the Royal Australian Air Force and Royal Australian Navy.

Externally, the Wirraway showcased an appearance not unlike her American sister. She sported low-wing monoplane assemblies with sweep back and curved wingtips, mounted well forward of amidships. Wings were attached to the oblong, rounded airframe. The engine was held in the forward most compartment and was of an air-fed radial type. The cockpit was held aft of the wings with adequate views from under the heavily framed "greenhouse-style canopy. The empennage was conventional and tapered off to form the base of the rounded vertical tail fin. Horizontal tailplanes were situated at the forward base of this single vertical fin. The undercarriage was of the "tail-dragging" arrangement dominated by the two single-wheeled main landing gear legs. While these twin assemblies retracted into the aircraft, the diminutive single-wheeled tail wheel did not and remained exposed whilst the aircraft was in flight. Crew accommodations amounted to two personnel made up of the pilot and an observer. Armament included a pair of 7.7mm Vickers GO machine guns while 2 x 250lb or 500lb bombs could be carried.©MilitaryFactory.com

Advertisements

The Wirraway was fitted with the aforementioned Pratt & Whitney R-1340 series, 9-cylinder, supercharged, air-cooled radial piston engine producing 600 horsepower and mated to a three-blade Hamilton Standard Constant speed propeller. Top speed was roughly 220 miles per hour with a cruise speed of just 155 miles per hour. Fuel was limited to 116-US gallons in wing fuel tanks with a pair of 11-US gallon reserve fuel tanks. Dimensionally, the aircraft sported a wingspan of 43-feet even with a length of 27 feet, 10 inches. Her height was 8 feet, 8 3/4 inches. When empty, the Wirraway displaced at 3,992 lbs and 6,595lbs for a maximum take-off weight.

The Wirraway was produced in seven major marks beginning with the CA-1 of which 40 were produced. The CA-3 was wholly similar to the CA-1, just assigned a different designation due to the nature of the Australian government production contract. This mark numbered 60 examples in all. In fact, the CA-5, CA-7, CA-8 and CA-9 were all also similar in scope to the original CA-1. The CA-5 was produced in a further 32 examples. The CA-7, CA-8 and CA-9 marks were produced in totals numbering 100, 200 and 188 examples respectively. The CA-10A was an uncompleted bomber proposal, fitted with dive bomber wings but the CA-3, CA-5, CA-7 and CA-9 models were ultimately modified with such wings to become the CA-20 mark. CA-16, the last production Wirraway, was built to the tune of 135 examples before the last rolled off of the Commonwealth assembly lines and these represented the largest modification since the inception of the CA-1. The CA-16 fitted a pair of dive brakes and carried a larger bombload for dive bombing sorties, in many ways making her the "definitive" breed of the family line.

Naturally, Australia maintained the largest collection of Wirraways in the world and these served with the Australian Air Force squadrons of No.4, No.5, No.12, No.21, No.22, No.23, No.24 and No.25. The Australian Navy Fleet Air Arm utilized the type with squadrons No.723 and No.724. The United Kingdom's Royal Air Force fielded one squadron (Y Squadron) of Wirraways in Malaya from 1941 to 1942, this being formerly the No.21 Squadron of the RAAF. The United States operated the Wirraway in severely limited numbers and only for a brief time with its HQ Flight as part of the 5th Air Force.

The first direct combat action for the Wirraway of the RAAF against Japanese forces occurred on January 6th, 1942 when No.24 Squadron Wirraways were sent to intercept several Japanese floatplanes near New Britain. Of the entire flight, however, only one was able to engage enemy aircraft and this with no confirmed kills. A few weeks later, Wirraways from the same squadron were back in action against Japanese fighters in bombers during the defense of Rabaul, the Wirraways, however, suffering heavy losses. Only the downing of one Japanese aircraft was ever formally attributed to the guns of any Wirraway pilot, this - suprisingly - a Mitsubishi A6M Zero fighter. Additional actions placed Wirraways over the skies of New Guinea but these were primarily used as ground attack platforms in support of ground forces in the region. The Wirraway continued in this respect until Curtiss P-40 Warhawks could be delivered in sufficient numbers from America and CAC itself could bring online its more impressive "Boomerang" dedicated fighter platform.

Despite her early-war origins, the Wirraway continued on in the post-war world, primarily back in form with her dedicated trainer roots. The Royal Australian Navy would retire their Wirraways in 1957, trading in their mounts for the jet-powered de Havilland Vampires from Britain, while the Royal Australian Air Force continued Wirraway use up until 1958 - her last flight being formally recognized on April 27th, 1959.©MilitaryFactory.com

Note: The above text is EXCLUSIVE to the site www.MilitaryFactory.com. It is the product of many hours of research and work made possible with the help of contributors, veterans, insiders, and topic specialists. If you happen upon this text anywhere else on the internet or in print, please let us know at MilitaryFactory AT gmail DOT com so that we may take appropriate action against the offender / offending site and continue to protect this original work.

Specifications

Service Year

1939

Origin

Australia

Status

RETIRED
Not in Service.

Crew

2

Production

755
UNITS

Commonwealth Aircraft Corporation (CAC) - Australia

(View other Aviaton-Related Manufacturers)

Australia; New Zealand; United Kingdom; United States

(OPERATORS list includes past, present, and future operators when applicable)

✓ 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.

✓ Training (General)
Developed ability to be used as a dedicated trainer for student pilots (typically under the supervision of an instructor).

Length

27.8 ft
(8.48 m)

Width/Span

43.0 ft
(13.11 m)

Height

8.7 ft
(2.66 m)

Empty Wgt

3,990 lb
(1,810 kg)

MTOW

6,594 lb
(2,991 kg)

Wgt Diff

+2,604 lb
(+1,181 kg)

(Showcased structural values pertain to the base CAC Wirraway production variant)

Installed: 1 x Pratt & Whitney R-1340 radial piston engine delivering 600 horsepower.

Max Speed

217 mph
(350 kph | 189 kts)

Ceiling

22,999 ft
(7,010 m | 4 mi)

Range

746 mi
(1,200 km | 2,222 nm)

Rate-of-Climb

1,950 ft/min
(594 m/min)

♦ MACH Regime (Sonic)

Sub

Trans

Super

Hyper

HiHyper

ReEntry

♦

(Showcased performance specifications pertain to the base CAC Wirraway production variant. Performance specifications showcased above are subject to environmental factors as well as aircraft configuration. Estimates are made when Real Data not available. Compare this aircraft entry against any other in our database or View aircraft by powerplant type)

STANDARD:
2 x 7.7mm Vickers GO machine guns

OPTIONAL:
2 x 250lb OR 500lb bombs.

Supported Types

Graphical image of an aircraft medium machine gun

Graphical image of an aircraft conventional drop bomb munition

(Not all ordnance types may be represented in the showcase above)

Hardpoint Mountings: 2

CA-1 - Initial Production Model based on the North American NA-16-2K; 40 examples produced.

CA-3 - Second Production Model; 60 examples produced; subtle changes yet still largely similar to CA-1 model.

CA-5 - Based on the CA-3 production model; 32 examples produced.

CA-7 - Based on the CA-3 production model; 100 examples produced.

CA-8 - Based on the CA-3 production model; 200 examples produced.

CA-9 - Based on the CA-3 production model; 188 examples produced.

CA-10A - Proposed dive bomber variant; to be fitted with revised wing assemblies containing dive brakes; never completed.

CA-16 - Final Wirraway Production Model; fitted with revised wing assemblies for larger bombloads; dive brakes installed for dive bombing; 135 examples produced.

CA-20 - Modified CA-3, CA-5, CA-7 and CA-9 production models with dive bomber wings for the Royal Australian Navy.

Military lapel ribbon for Operation Allied Force

Military lapel ribbon for the Arab-Israeli War

Military lapel ribbon for the Battle of Britain

Military lapel ribbon for the Battle of Midway

Military lapel ribbon for the Berlin Airlift

Military lapel ribbon for the Cuban Missile Crisis

Military lapel ribbon for pioneering aircraft

Military lapel ribbon for the Falklands War

Military lapel ribbon for the French-Indochina War

Military lapel ribbon for the Golden Age of Flight

Military lapel ribbon for the 1991 Gulf War

Military lapel ribbon for the Indo-Pak Wars

Military lapel ribbon for the Iran-Iraq War

Military lapel ribbon for the Korean War

Military lapel ribbon for the 1982 Lebanon War

Military lapel ribbon for the Malayan Emergency

Military lapel ribbon representing modern aircraft

Military lapel ribbon for the attack on Pearl Harbor

Military lapel ribbon for the Six Day War

Military lapel ribbon for the Soviet-Afghan War

Military lapel ribbon for the Spanish Civil War

Military lapel ribbon for the Suez Crisis

Military lapel ribbon for the Ukranian-Russian War

Military lapel ribbon for the Vietnam War

Military lapel ribbon for Warsaw Pact of the Cold War-era

Military lapel ribbon for the WASP (WW2)

Military lapel ribbon for the World War 1

Military lapel ribbon for the World War 2

Military lapel ribbon for the Yom Kippur War

Military lapel ribbon for experimental x-plane aircraft

Ribbon graphics not necessarily indicative of actual historical campaign ribbons. Ribbons are clickable to their respective aerial campaigns / operations / aviation periods.

Images Gallery

1 / 1

High-angled front right side view of the CAC Wirraway in flight

Advertisements

Disclaimer | Privacy Policy | Cookies

2023 Military Pay Chart Military Ranks DoD Dictionary Conversion Calculators Military Alphabet Code Military Map Symbols

The "Military Factory" name and MilitaryFactory.com logo are registered ® U.S. trademarks protected by all applicable domestic and international intellectual property laws. All written content, illustrations, and photography are unique to this website (unless where indicated) and not for reuse/reproduction in any form. Material presented throughout this website is for historical and entertainment value only and should not to be construed as usable for hardware restoration, maintenance, or general operation. We do not sell any of the items showcased on this site. Please direct all other inquiries to militaryfactory AT gmail.com. No A.I. was used in the generation of this content; site is 100% curated by humans.

Part of a network of sites that includes GlobalFirepower, a data-driven property used in ranking the top military powers of the world, WDMMA.org (World Directory of Modern Military Aircraft), WDMMW.org (World Directory of Modern Military Warships), SR71blackbird.org, detailing the history of the world's most iconic spyplane, and MilitaryRibbons.info, cataloguing military medals and ribbons.

View day-by-day actions of the American Civil War with CivilWarTimeline.net. View day-by-day actions of World War II with SecondWorldWarHistory.com.

©2023 www.MilitaryFactory.com • All Rights Reserved • Content ©2003-2023 (20yrs)