CFS Mitsubishi A7M2 Reppu

The Mitsubishi A7M2 Reppu ("Strong Gale" or "Hurricane") was designed as the successor to the Imperial Japanese Navy's A6M Zero, with development beginning in 1942, but was finished too late in 1945, and mass production of Reppu was not in time of WWII.
Performance objectives were to achieve superior speed, climb, diving, and armament over the Zero, as well as better maneuverability. As a result, the wing area and overall size were significantly greater, on par with the American P-47 Thunderbolt. The A7M's allied codename was "Sam".

Towards the end of 1940, the Imperial Japanese Navy asked Mitsubishi to start design on a 16-Shi carrier-based fighter, which would be the successor to the carrier-based Zero. At that time, however, there were no viable high-output, compact engines to use for a new fighter. In addition, Jiro Horikoshi's team was preoccupied with addressing early production issues with the A6M2b as well as starting development on the A6M3 and the 14-Shi interceptor (which would later become the Mitsubishi J2M Raiden, a land-based interceptor built to counter high-altitude bombers). As a result, work on the Zero successor was halted in January 1941.

In April 1942, the development of the A6M3 and the 14-Shi interceptor was complete, and the Japanese Navy once again tasked Mitsubishi and Horikoshi's team with designing a new Zero successor to be the 17-Shi fighter. In July, the Navy issued specifications for the fighter: it had to fly faster than 345 kn (639 km/h; 397 mph) above 6,000 m (20,000 ft), climb to 6,000 m (20,000 ft) in less than 6 minutes, be armed with two 20 mm cannon and two 13 mm (0.51 in) machine guns, and retain the maneuverability of the A6M3.

As before, one of the main hurdles was engine selection. To meet the specifications the engine would need to produce at least 1,491 kW (1,999 hp), which narrowed choices down to Nakajima's NK9 under development (later becoming Homare), or Mitsubishi's MK9 (Ha-43), which was also still being developed. Both engines were based on 14-cylinder (Nakajima Sakae and Mitsubishi Kinsei, respectively) engines converted to 18-cylinder powerplants. The early NK9 had less output but was already approved by the Navy for use on the Yokosuka P1Y Ginga, while the larger MK9 promised more horsepower.

With the larger, more powerful engine, wing loading became an issue. The Navy requested at most 150 kg/m², but wanted 130 kg/m² which complicated design considerations further. With the NK9 it could achieve 150 kg/m², but with the less power it wouldn't meet the specifications for maximum speed. With the MK9 the engineers concluded it could fulfill the requirements; however, production of the MK9 was delayed compared to the NK9, and the Japanese Navy instructed Mitsubishi to use the NK9.

Work on the 17-Shi was further delayed by factories prioritizing A6M and Mitsubishi G4M production as well as further work on A6M variants and addressing Raiden issues. As a result, the 17-Shi, which became the A7M1, officially flew for the first time on 6 May 1944, four years after development started. The aircraft demonstrated excellent handling and maneuverability, but was underpowered as Mitsubishi engineers feared, and with a top speed similar to the A6M5 Zero. It was a disappointment, and the Navy ordered development to stop on 30 July 1944, but Mitsubishi obtained permission for development to continue using the Ha-43 engine, flying with the completed Ha-43 on 13 October 1944. The A7M2 achieved a top speed of 628 km/h (339 kn; 390 mph), while climb and other areas of performance surpassed the Zero, leading the Navy to change its mind and adopt the craft. The A7M2 was also equipped with automatic combat flaps, used earlier on the Kawanishi N1K-J, significantly improving maneuverability.

While it was hoped that the A7M would replace the A6M, production was disrupted by the Nagoya's Erthquake in December 1944, and by american bombing the next days, when the B-29s destroyed the buildings that survived to earthquake. With only eight aircraft completed by the end of the war, the type never saw combat.

(Source: Wikipedia and Saburo Sakai's "Samurai" book)

General characteristics

Crew: 1
Length: 10.99 m (36 ft 1 in)
Wingspan: 14.00 m (45 ft 11 in)
Height: 4.28 m (14 ft 0½ in)
Wing area: 30.86 m² (332.2 ft²)
Empty weight: 3,226 kg (7,112 lb)
Loaded weight: 4,720 kg (10,406 lb)
Powerplant: 1× Mitsubishi Ha-43, 1,640 kW (2,200 hp)


Performance

Maximum speed: 630 km/h (339 kn, 390 mph) at 6,600 m (21,660 ft)
Cruise speed: 417 km/h (225 kn, 259 mph)
Service ceiling: 10,900 m (35,760 ft)
Endurance: 2.5 hr cruise + 30 min combat
Climb to 6,000 m (13,100 ft): 6 min 7 sec

Armament

2 × 20 mm Type 99 cannons
2 × 13.2 mm (0.52 in) Type 3 machine guns

Original MDL design & panel: 'flyman' Yusaku Honma (1999).
All reworked to CFS, with new damage profile, up-scaled, and new BMP textures by Edmundo Abad, 2012.
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This virtual model is painted with original Yusaku Honma light grey texture (unknown for me), reworked as BMP files.

I have included new BMP textures, and new scale (8) for use with CFS1.

This virtual model is up-scaled to obtain a better view in Combat Flight Simulator.
(for accurate scale in FS98, replace the file A7M2-b.mdl by A7M2-b.old.mdl and rename this as A7M2-b.mdl)
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Installation FS98/CFS

1. Unzip to Temporaly directory "A7M2-b.zip".

2. Copy "A7M2-b" folder to X:\CFS\aircraft directory.

Edmundo Abad, 02/2012
Santiago- Chile
eabad5@live.cl