Mitsubishi J8M Syusuy (Key 200)
With the start of a raid by U.S. bombers B-29 Superfortress Japanese army felt the need for a high-speed interceptor that could rapidly climb. Japanese attaché in Germany received information on the development of missile interceptor Me 163V, and in late 1943, was purchased a license for its rocket engine Walter HWK 109-509. The Navy issued in July 1944 Specifications 19-C, which envisaged the creation of such an interceptor missile. Task has been assigned to Mitsubishi. From the outset, the project represented the joint development of the army and navy, and the Japanese HWK 109-509 engine modification was a joint development of the Army, Navy, and Mitsubishi.
Design of the aircraft, designated the Navy J8M1 and the army Key 200, produced under the control of Midziro Takahashi on Mitsubishi and fairly rapidly. Already in September 1944, was ready to mock. It was approved by the Army and Navy, and work began on opytneyshemi aircraft.
Soon after the start of work on the design of J8M1 Navy I ordered the Sea Air and technical arsenal at Yokosuka a glider similar design to assess the maneuverability of the future missile interceptor, and to use it for pilot training. First experienced glider tailless MXY8 Akigusa (Autumn grass) was completed in December 1944, He was taken to the airfield Hyakurigahara in Ibaragi Prefecture, where he first took to the air on December 8.
In the first flight Akigusa was raised in tow for Kyushu K10W1 of the 312th running Kokutai Toehiko Inuzuka upcoming test pilot J8M1.
Hesmotrya on an extraordinary assembly, maneuverability MXY8 was normal, and two more were put out of the glider in Yokosuka Army Aviation Institute in Tachikawa, where they were tested by army pilots. In the Institute of Aviation Fleet Maeda and Yoko coca QC soon started to create a version of MXY8 with tanks for ballast water, simulating a full refueling interceptor. This glider was designated Key 13 "training glider" and already destined for the preparation of drill pilots. Have released 50-60 of gliders. The Navy is also planning to produce a motor glider version MXY9 Shukan (Autumn fire) with the power plant of the compression engine thrust of 200 kg. Ho this option at the time of the defeat of the Land of the Rising Sun was not ready.
For more painstaking research interceptor maneuverability coming at full load Mitsubishi's first two J8M1 performed in the glider version with ballast instead of the engine and fuel. In the first unpowered flight J8M1 was raised in tow for B6N1 January 8, 1945 Flying confirmed the correctness of selected decisions and opened the green light a marine missile interceptor pilot "Syusuy" J8M1 and army missile interceptor pilot "Syusuy" Key 200. First experienced naval aircraft left the factory in Hagoye in June 1945 and transferred to ground tests in Yokoku. July 7, 1945 Mr. J8M1 for the first time rose into the air, but almost immediately after lift-off, on a steep ascent engine failed, the plane was broken, and his pilot Toehiko Inuzuka died. To solve the emerging problems in the sixth and seventh most experienced aircraft urgently re-fuel system, but before the end of hostilities had not yet been flight tested any J8M1 or Key 200. By the end of the war has already prepared a batch creation Syusuy. Ha Mitsubishi, Fuji Hissane and prepared for assembly strip 2-fighter variants: J8M1 was armed with 2 30mm cannon type 5, and the J8M1 KAI instead of one of the guns had to get an extra fuel tank. In Rikugun army spices developed an enlarged version of Ci 200 Ci 202, which had more in store of fuel, which was to become the main option army interceptor.
The performance properties of J8M / Key 200
Type — Single missile interceptor
Slider — missile Toko Ro.2 (KRIO) thrust of 1500 kg
Armament — 2 * 30 mm cannon wing type 5 (1 x 30 mm gun on the Type 5 J8M2)
The highest speed — 900 km / h at 10,000 m
Time to climb to 10,000 m — 3.5 m
Ceiling — 12,000 m
Duration of motor flight — 5.5 min
Blank — 1505 kg
Takeoff — 3885 kg
Wingspan — 9.5 m
Length — 6.05 m
height — 2.7 m
Wing area — 17.73 sq.m.
Designing Kikki (Orange blossom) only Japanese jet aircraft capable rocket on its thrust, launched in September 1944, when there were reports about the success of the development of the Me 262 in Germany. Following reports about the plane of the Japanese military attache in the German naval headquarters ordered Hakadzime development of single twin-engine fighter-bomber, the type of the Me 262.
The highest rate was required at 700 km / h, the act of up to 200 km with a bomb load of 500 kg and 275 km with a 250 kg bomb, landing speed was determined at 150 km / h, and the take-off distance when using the 2-rocket booster thrust of 450 kg 350m aircraft also had to have folding wings for placement in shelters and tunnels, and to facilitate production.
The aircraft, designed by Kazuo Ohno and Kenichi Matsumura, outside like the Me 262, but was smaller. Turbofan engines were placed under the wing, allowing the least modifications to use different engines. It was a good decision, because the development of the planned engines delayed. Initially, the aircraft established two compression engine 11 Tsu thrust of 200 kg, but soon they changed to two turbojet He thrust of 12 340 kg. By this time the aircraft was designated a special attack Kikki, but because nedovedennosti 12 series engines He still was not planned. Fortunately, managed to get a photo of the German thrust turbojet engine BMW 003 delivered to a naval engineer Eiichi Ivaya. This allowed the people of the country of the rising sun to create a small copy of this motor 20 He thrust of 475 kg. With the installation of 2-20 He planned to get the calculated properties and the project acquired a second wind.
First flight tested Kikki August 7, 1945 under the control of Mr. Lieutenant-Commander Susumu Takao at the airport Kisarazu. After a four day or during the second scheduled flight, the plane skapotiroval due to an incorrect angle of the launch rocket boosters. By 15 August, was almost ready to second experienced plane, and even the initial batch of 18 aircraft were at different stages of assembly.
Planned development of several variants of Kikki, including double training option, which was to become the third experimental aircraft. Designed and unarmed scout double and single-seat fighter, armed with 2 30mm guns and gear type 5 with 2 engines He thrust of 130 900 kg or 330 He thrust of 885 kg.
The performance properties of Kikki
Type — Single bomber
Engines — two turbo-axial thrust of 475 kg
Armament — one 500-800 kg bomb
The highest rate:
km / h at sea
700 km / h at an altitude of 10,000 m
Time lift to a height of 10,000 m — 26 min
Ceiling — 12,000 m
Range — 940 km
Blank — 2300 kg
Takeoff — 3500 kg
greatest — 4080 kg
wingspan — 10 m
length — 8,125 m
height — 2.95 m
Wing Area — 13.2 m