Aces High Bulletin Board
General Forums => Aircraft and Vehicles => Topic started by: brady on May 01, 2002, 01:01:55 PM
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Well what about a CAC Boomerang:) I mean after we get all those Japanese planes we desperatly nead:) Because so far we only have one early war Japanese ftr to fight off all those early war alled plane's.
C.A.C. Boomerang
TYPE: Single seat fighter / army cooperation aircraft
ENGINE: One Pratt & Whitney R-1830-S3C4 Twin Wasp piston engine, of 1,200 hp.
DIMENSIONS:
SPAN: 36 ft 0 in / 10.97 m.
LENGTH: 25 ft 6 in / 7.77 m.
HEIGHT: 10 ft 6 in / 3.20 m.
PERFORMANCE:
MAX. SPEED; 265 kts / 491 kph
CRUISING SPEED: 165 kts / 305 kph
INITIAL CLIMB: 2,150 ft / 655 m. per min.
NORMAL RANGE: 808 nm / 1,496 km.
MAX. RANGE (with drop tank): 1,390 NM / 2,575 km
SERVICE CEILING: 34,000 ft / 10,363 m.
ARMAMENT: 2x 30 mm cannon and 4x .303 in. machine guns in wings; provision for 4x 20 lb / 9 kg smoke bombs under centre section.
WEIGHTS:
EMPTY WEIGHT: 5,373 lb / 2,437 kg
NORMAL LOADED: 7,699 lb / 3,492 kg
MAX. OVERLOAD: 8,249 lb / 3,742 kg
CREW: 1
RAAF SERVICE: 1942-1946
with 2 OTU, and 4, 5, 83, 84 and 85 Squadrons.
With the sudden and apparently unstoppable spread of Japan from 1941, Australia found itself with no modern fighters with which to defend itself. The CAC (Commonwealth Aircraft Corporation) Boomerang was a panic measure, progressing from design to first flight in a mere two months, and using as many components of the Wirraway (itself a Texan/Harvard derivative) as possible.
The first CA-12 Boomerang flew in May 1942, with 2 Operational Training Unit taking the first deliveries the following October. By then the desperate need for the aircraft had passed with the arrival of P-40 Kittyhawks and Spitfires.
The Boomerang was flown by two squadrons in Australia (83 and 85) and 4, 5 and 84 Sqns. in operations against the Japanese. It was an inadequate fighter, but proved itself in the army co-operation role in New Guinea and Bougainville.
A total of 250 were built, as CA-12, CA-13, CA-19 and CA-14/A versions, the last being a turbocharged variant which appeared in 1943.
Three surviving Boomerangs were listed on the Australian civil aircraft register in mid-2001.
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Nice looking plane. Can you imagine the plumbing nightmare routing all those exhust stacks out the same side like that? Bet it had an awsome sound to it.:)
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Originally posted by Weave
Nice looking plane. Can you imagine the plumbing nightmare routing all those exhust stacks out the same side like that? Bet it had an awsome sound to it.:)
It's not a plumbing nightmare. It's just a flame difuser set on a single stack. Think a long pipe with lots of small holes and extrusions to allow the exhaust gasses to spread out.
BTW the Boomerang is the venerable AT6 Texan up-engined and guns added with a single cockpit instead of the training double cockpit. Nice expediant way of getting at least some firepower forward without developing a new airframe.
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hell yeah. we should get the AT-6, the Wirraway and the Boomerang. Since they all originate from the first mentioned, they shouldn't be too hard to develop.
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Bring some Australian (markings/squad) Aircraft to Aces High.
Agreed Brady :)
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I'd trade in the Boomerang for a RAAF marked Spitfire MkVIII, P-40N, B-24, or a Beaufighter!
Tronsky
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/:)
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It Should be Noted that the Aramement was 20mm Hispano's and 303's not a 30mm gun.
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All the stuff i read up on indicated 2 X30mm, To change the set up would decrease the weight right? Altering performance in its favour some?
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LJbomber,
It was armed exactly like the Spitfire Mk Vb. It carried two 20mm Hispano cannon (not sure if they were drum fed Mk Is or belt fed Mk IIs) and four .303 calibre Browning machine guns.
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is a 303 a 7.9 mm?
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Originally posted by LJbomber
is a 303 a 7.9 mm?
'Bout 7.7mm
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Hi LJbomber,
>is a 303 a 7.9 mm?
1 inch = 25.4 mm
(That's the official definition :-)
So a 0.303" gun is a 7.70 mm gun. A 0.30" gun is a 7.62 mm gun.
(These might be nominal calibres, often the actual calibre deviates slightly. It's subject to a certain inaccuracy anyway.)
Regards,
Henning (HoHun)
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Ok thanks for that guy, Also What about the boomerang wouldn't it be fun? Id fly it even if it does have great weakness's
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I would like to see it, a Wiraway would be cool to:)
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Originally posted by HoHun
Hi LJbomber,
>is a 303 a 7.9 mm?
1 inch = 25.4 mm
(That's the official definition :-)
So a 0.303" gun is a 7.70 mm gun. A 0.30" gun is a 7.62 mm gun.
(These might be nominal calibres, often the actual calibre deviates slightly. It's subject to a certain inaccuracy anyway.)
Regards,
Henning (HoHun)
Some semi-useless info:
Nominal bore diameter is what the caliber usually indicates.
For example, the M1906 (30-06) fires a bullet that measures.307-.309 inches diameter. Its replacement was the 7.62mm NATO round, which was the 308 Winchester with a FMJ bullet. Generally, the bullet diameter is .007-.009 larger in diameter than the nominal bore diameter. If it wasn't, it would not engage the rifling. If the bullet is of greater diameter than that described above, chamber pressures become too high. Excessive rifling engagement also increases friction, and thus bore wear is excessive (assuming you don't suffer an over-pressure related failure).
I believe that most .303 rounds used .311 diameter bullets.
The .303 used a rimmed shell casing, whereas the M1906 was classified as being rimless (uses an undercut groove for case extraction). You can push a .303 into a .30 rifle, but the bolt will not go home and you will likely break the extractor when it gets forced over the much larger diameter rim. Since the .303 uses a tapered bottleneck case, the case will wedge in the chamber of a .30 weapon and extracting it will be hard work.
Getting the M1906 round into a .303 chamber is equally difficult because the M1906 is considerably longer and will not allow the bolt to close.
My regards,
Widewing