Mitsubishi Ki-30 'Ann'

Mitsubishi Ki-30 'Ann'

Mitsubishi Ki-30 'Ann'

The Mitsubishi Ki-30 'Ann' was produced as part of the Japanese Army's modernization programme of the mid 1930s, but although its design contained a number of technical 'firsts' for Japan it was a mediocre aircraft, and suffered heavy losses when it came up against determined resistance.

By 1936 the modernization programme had produced new fighters, heavy bombers and reconnaissance aircraft, but the Kawasaki Ki-3 and Mitsubishi Ki-2 remained the only light bombers in service. In May 1936 Mitsubishi and Kawasaki were each asked to produce two prototypes for a new light bomber. The new aircraft was to have a maximum speed of 248.5mph at 9,845ft, a normal bomb-load of 661lb, a maximum bomb-load of 992lb and to use one of three possible engines providing 825-850hp.

The eventual Mitsubishi design was a mid-wing monoplane, with an internal bomb bay and a fixed undercarriage. The first prototype was powered by a Mitsubishi Ha-6 radial engine, and made its maiden flight on 28 February 1937. The second prototype, powered by a Nakajima Ha-5 radial engine followed later in the same month. It would be the first operational Japanese army aircraft to be powered by a double-row radial engine, to use an internal weapons bay, have a variable pitch propeller and to have split flaps on the wings.

Both prototypes had better than required performance. The army ordered sixteen service trial aircraft, powered by the Nakajima Ha-5 KAI radial. These were completed by January 1938, and mass production began in March 1938. Mitsubishi built 618 production aircraft, ending in April 1940, another 68 aircraft were built by Tachikawa Dai-Ichi Rikugen Kokusho between 1939 and September 1941

The Ki-30 made its combat debut over China, where it operated with fighter cover and performed quite well. Its pleasant flying characteristics made it popular with its pilots. After Japan entered the Second World War the Ki-30 was used successfully over the Philippines, but as soon as it came up against fighter opposition its lack of speed and defensive armament meant that it suffered heavy casualties. The Ki-30 was quickly withdrawn from the front line, and was used for crew training. Towards the end of the war surviving aircraft were used to carry out kamikaze suicide attacks.

Engine: One Nakajima Ha-5 KAI 14-cylinder radial
Power: 950hp at take-off, 960hp at 11,810ft
Crew: 2
Wing span: 47ft 8in
Length: 33ft 11in
Height: 11ft 11in
Empty Weight: 4,916lb
Loaded Weight: 7,324lb
Max Speed: 263mph at 16,405ft
Cruising Speed: 236mph
Service Ceiling: 28,120ft
Range: 1,056 miles
Armament: Two 7.7mm machine guns, one in port wing, one in rear cockpit
Bomb-load: 882lb/ 400kg maximum, 661lb normal


Ki-30 "Ann", Japanese Light Bomber


"Ann" was developed for the China Incident in the mid-1930s, a period of rapid modernization of the Japanese Army Air Force. Mitsubishi and Kawasaki were instructed in May 1936 to design prototype light bombers by December to meet a challenging set of requirements. The Mitsubishi team under Komamura designed an aircraft incorporating many then-novel features, including a double-row radial engine, variable-pitch propeller, internal bomb bay and split flaps. However, an attempt to include retractable landing gear was abandoned when wind tunnel tests suggested the reduction in drag would not make up for increased weight and complexity. The prototype flew on 28 February 1937, its only significant deficiency being that it was slightly over the specified weight. Mass production began in March 1938.

The design proved highly reliable in China, where escort by Ki-27 "Nates" helped ensure a low loss rate. However, "Ann" was obsolete by the time war broke out in the Pacific. Though she played an important role in the Philippines in 1942, again under conditions of Japanese air supremacy, she suffered heavy losses wherever Allied fighters were operating and was soon withdrawn from front-line service. The few survivors were expended as kamikazes late in the war.

Nine of these aircraft were given to the Thais and were used against the French in Indochina during the border incident of January 1941.


Aviation of Japan 日本の航空史

Three versions to be released by AZ Models, as shown here. Mixed feelings about this. Great to see a new kit (and about time) but perhaps now unlikely we will see this in mainstream form from Hasegawa, Fujimi, Fine Molds - or Airfix.

10 comments:

Nice to see this plane in kit form.
Bytheway, I sometimes wonder how this plane carried only a crew of two. Who aimed the bombs? Was the plane equiped with a bombsight? And I saw a pic with two men in the rear cockpit.

Refer to step 2 on the instructions page Nick has posted for us, part number 29. I believe that part is supposed to represent a bomb sight, mounted in the rear cockpit.

Curiuous. It reminds me the bombsight on a B5N Kate. So the observer sights through the bombbay.

And I wonder how the bombs were arranged in the bombbay.

Isn't this kit just a re-pop of AML's kit from a few years back? The parts breakdown looks the same and AZ Models has done this before. Its not a bad kit with some work. maybe Sword will give us one at some point.

I don't think AML ever released a Ki-30 - you might mean Pavla? Planet released a resin kit.

The bombsight is supposed to represent the Type 88 which was a development of the First World War German Goerz type incorporating drift angle correction. It was tubular in design and stood vertically but there was a protruding box panel facing the operator and the shape of the optical head unit does not appear to be very well represented by the AZ part. As Emilio notes it was used with the bomb doors open. This type of bombsight was eventually replaced by the Type 99 Light Reflector Sight, a more conventional design which was better suited for low-level bombing. For that reason it is often incorrectly referred to as a "low-level" bombsight.

Hmmm, I have one in my stash somewhere but I think you're right. Pavla. I've never seen the Planet kit so can't comment on that one.

AML produced kit of a B5M1 "Mabel" which is somewhat similar in configuration - could that be the one in your stash? There was also a Wings vacform but I cannot remember whether there was also an early CMK release in resin.

Ahhh, yes, after checking I have both actually! Thanks! :)

AZ bought several 1st generation moulds from Pavla. I don't know whether they improved them or not. Pavla's Ki-30 was rather 'so-so', so I hope AZ improved it a bit.


Mitsubishi Ki-30 Ann Model kit

Scale : 1:48
The 1:48 scale is the queen size scale for model planes. Military models are also available in this scale. A model that is 1:48 scale is 48 times smaller than the real object. For example, a model airplane in the 1:48 scale measures 13 inches / 31.25 cm long if the real object is 15 m (1500 cm).

Type of product : Airplane model kit
To build a plastic model airplane, you'll need a few things :
- a cutter or cutting pliers
- and model glue.
You can also paint the model with brushes(acrylic or enamel).
The model consists of different parts to cut and assemble.
Construction time will vary depending on the number of parts.
An instruction manual is provided for you inside the box.

Paint and glue : To be bought separately
The tools, paints and glue are not provided. You can see our selection with the essential glues and paints or the full range..


Mitsubishi Ki-30 ANN

In May 1936 the Imperial Japanese Army issued its specification for a light bomber required to supersede the Mitsubishi Ki-2 and Kawasaki Ki-3 then in service. The Mitsubishi Ki-30 prototype that resulted was of cantilever mid-wing monoplane configuration with fixed tailwheel landing gear, the mam units faired and spatted, and powered by a 615kW Mitsubishi Ha-6 radial engine. Flown for the first time on 28 February 1937 this aircraft performed well, but it was decided to fly a second prototype with the more powerful Nakajima Ha-5 KAI radial engine. This aircraft showed some slight improvement in performance but, in any case, exceeded the army's original specification, so there was no hesitation in ordering 16 service trials aircraft. These were delivered in January 1938 and, two months later, the Ki-39 was ordered into production.

First used operationally in China during 1938, the Ki-30s proved to be most effective, for in that theatre they had the benefit of fighter escort. The situation was very much the same at the beginning of the Pacific war, but as soon as the Allies were in a position to confront unescorted Ki-30s with fighter aircraft they immediately began to suffer heavy losses and were soon relegated to second-line use. The Allied codename 'Ann' was allocated to the Ki-30, but few were seen operationally after the opening phases of the war. A total of 704 had been built when production ended in 1941, 68 manufactured by the First Army Air Arsenal at Tachikawa, and many of these ended their days in a kamikaze role during the closing stages of the war.

Here we go again! "Without fighter escorts. blah blah" The same is true of ground attack /army support aircraft of all Air Forces. Excellent aircraft for the role it was designed for!


Mitsubishi Ki-30 'Ann' - History

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Mitsubishi Ki-30
Type: Light Bomber
Origin: Mitsubishi
Crew: Two
Allied Code Name: Ann
Models: Ki-30
First Flight: February 1937
Service Delivery: October 1938
Final Delivery: 1941
Production: 706
Powerplant:
Model: Mitsubishi Ha-5 Kuisei
Type: 14-cylinder two-row radial engine
Number: One Horsepower: 950 hp

Dimensions:
Wing Span: 14.55m (47 ft. 8¾ in.)
Length: 10.34m (33 ft. 11 in.)
Height: 3.65m (11 ft. 11¾ in.)
Wing Area: N/A

Weights:
Empty: 2230 kg (4,915 lb)
Loaded: 3322 kg (7,324 lb)

Performance:
Max. Speed: 423 km/h (263 mph)
Initial Climb: 1,640 ft/min (500 m/min)
Service Ceiling: 8570m (28,117 ft.)
Max. Range: 1700 km (1,056 miles)

Armament:
One 7.7mm Type 89 in fixed in wing
(sometimes both wings)
One 7.7mm Type 89 manually aimed in rear cockpit

Bomb Load:
Three 220 lb. (100 kg) of bombs carried internally


Mitsubishi Ki-30 'Ann' - History

This was the first Japanese light bomber to be fitted with a double-row air-cooled radial engine, variable-pitch propeller, internal bomb bay and split flaps. Even so, the Ki-30 (given the Allied codename of "Ann") was not a conspicuous aircraft. It began its operational career in 1938, and while serving in China it served adequately, but that was only because there was little or no air opposition. In the early part of the war it saw service in the Phillipines campaign, but only after Allied fighters had been driven off. Once Allied fighters started to reassert themselves later in the war the losses of Ki-30s increased dramatically. At this point it was retained for crew training purposes, as well as a number that were given to the Royal Thai Air Force. At war's end they joined other obsolete aircraft in suicide operations against the Allies.

Mitsubishi Ki.30 Type 97



Additional information on this aircraft can be found at Wikipedia
HERE .

For a very nice scale color drawing of this aircraft, see here .

Additional color schemes for this aircraft can be found here.

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Mitsubishi Ki-30

The Mitsubishi Ki-30 was a Japanese light bomber of World War II. It was a single-engine, mid-wing, cantilever monoplane of stressed-skin construction with a fixed tailwheel undercarriage and a long transparent cockpit canopy. The type had significance in being the first Japanese aircraft to be powered by a modern two-row radial engine. During the war, it was known by the Allies by the name Ann.

The Ki-30s were first used in combat in Second Sino-Japanese War from spring 1938. It proved to be reliable in rough field operations, and highly effective while operating with fighter escort. This success continued in the early stages of the Pacific War, and the Ki-30s participated extensively in operations in the Philippines. However, once unescorted Ki-30s met Allied fighters, losses mounted rapidly and the type was soon withdrawn to second-line duties. By the end of 1942, most Ki-30s were relegated to a training role. Many aircraft were expended in kamikaze attacks towards the end of the war.

Profile: Fighting Aircraft of World War II
Published by Salamander Books.


Mitsubishi Ki-30 Ann

Every item in our inventory has been inspected, very strictly graded, and bagged for its protection.

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Excellent. Lightly used, but almost like new. May show very small spine creases or slight corner wear. Absolutely no tears and no marks, a collectible condition.

Very Good. Used. May have medium-sized creases, corner dings, minor tears or scuff marks, small stains, etc. Complete and very useable.

Very well used, but complete and useable. May have flaws such as tears, pen marks or highlighting, large creases, stains, marks, a loose map, etc.

Extremely well used and has major flaws, which may be too numerous to mention. Item is complete unless noted.


AZ Models 1/72 Mitsubishi Ki-30 ‘Ann’ (7359/7367)

Jan 12, 2012 #1 2012-01-12T11:33

The ‘Ann’ is one of those lesser known types that straddled the end of the ‘30s’ and crept into the ‘40s’ with initial but short lived success. It performed its light bombing role well until it met fighter opposition. That seems to be the fate of all light bombers of the era such as the Stuka, Battle, Skua etc. The remains of the ‘30s’ linger with the fixed undercarriage and spats, but it had a double row radial engine and a stressed metal skin. In spite of its limitations, it remained in service throughout the war.

This was my first build of an AZ Model kit. I had no idea what to expect. What I got was a real mixed bag. The surface detail is very good, in fact excellent for anyone who wants to run black paint along panel lines. Cockpit detail is also quite good, though there are no decals for instrument panels. There are resin parts for the engine, wheels and the two bombs. Separating the bombs from the resin block took more care than I exercised on them, the result being some broken fins that I had to replace with scratch built parts.

The biggest irritant was the complete lack of clear and firm locating points, even for the major components. The wings join to the fuselage with a simple butt joint, making it hard to get the angles right. The tail wings are the same, as are the undercarriage legs. It isn’t a major problem, once one recognizes that additional care is needed, but it could have been so much easier had there been some kind of locating pins, lugs, holes, or something. I resorted to filler to solve the problem.

The canopy comes in one long piece. The instructions show how it can be opened up, but one has to cut it apart to do this. I resisted the temptation as I did not want to risk splitting it.

The kit comes with three attractive colour schemes. These are unhelpfully numbered 1, 2 and 3 with no information about their date, location of service or anything. The one I chose was not in the Wings Palette site, so I have no idea of its origin. I chose it because I fancied painting the thin wavy lines.

But on the whole, it was a fairly satisfying build that would not put me off buying another AZ Model kit, in spite of their relatively high price. Fortunately, this one was a Christmas present so I was spared the expense.


Jun 15, 2019 #1 2019-06-15T01:32

Finally finished my Mitsubishi Ki-30 -built for the upcoming 30th Anniversary AMRO model show in August in Gatineau QC.
Hand painted with Model Master enamels while the swirl was done with a UNI-Posca paint marker!

Terry Jones
Ottawa, Canada

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