1. #11
    Here's the best breakdown of the Ki-83 i've so far found on the net, you'll have to excuse the grammer as it's a translation from a French site...

    Enormous dimensions of "Sphere of Coprospérité de Grande Asia Eastern", it is to say the gigantic zone which Japan occupied as of the spring of 1942 in Asia and in the Pacific, were at the base of this new model. Indeed, Koku Hombu realized that it had no apparatus of hunting capable of a very long operating range, being able to extend defense beyond the possible objectives well and to even carry it in extreme cases of the zone of nippone influence.
    With this argument another considerable was added some. The hunter with long operating range was nécéssairement of rather strong size and, of this fact it was able to carry a heavier and more significant armament.
    As curious as that can appear, the true and original mission of the apparatus for which it was studied initially, it was the penetration in Soviet territory starting from the Japanese bases located close to the Mandchourie-U.R.S.S border.
    The plane was designed to attack the Siberian aerodromes and this is why Koku-Hombu required an optional operating range from at least 1 300 km.
    It was however only in May 1943 that Koku Hombu subjected its new F programs and the Mitsubishi company let know that it was laid out to answer it. It was indeed the team of engineer Tomio Kubo, already responsible for exéllent Ki.46 Shin ****ei (Dinah), which was put at work. In fact, engineer Kubo and his principal assistants leaned on a fornule which was not without pointing out that of Kawasaki Ki.64, i.e. a plane of the type traditional apparently single-engined aircraft, of relatively modest size and equipped him also with a coupling of push-pulls.
    The study adopted completely remarkable lines. The apparatus had forms which pointed certainly out those of Ki.46, but even more refined. The project was again presented at the authorities of Koku Hombu which made known little time after their agreement in order to develop it and they allotted the Ki.83 code to the future hunter with long operating range. A little later an order was launched, bearing on the construction of four prototypes

    The plane was appeared as an elegant two-seater twin-engine at median aerofoil and retractable traditional landing gear, of entirely metal construction. The fuselage, length and end, started with a lengthened ogival form containing in its lower half the powerful fixed armament, not including/understanding less than two Ho.203 guns or Ho 105 of 30 mmavec 100 cartouches each one and two Ho.5 guns of 20 mm with 200 cartouches each one.
    A little before the centre of gravity was located the two-seater cockpit out of tandem covered with a canopy at vision total but largely equipped with reinforcements. The fuselage preserved its not very major oval section, which decreased then gradually towards the empennage, dasn the back point placed the articulation of the caster of retractable tail, whose housing was sealed by two small doors. It should be noted that the fuselage comprised moreover a small ventral compartment able to carry two small bombs of 50 kg.
    The empennage pointed out those of the Ki.46 model and thus consisted of a trapezoidal vertical plan with Forte cord and of an also trapezoidal plan of depth assembled on the drift and not on the fuselage. This provision was adopted in order to slightly place this surface above the aerodynamic wake of the engines. All the moving parts of the control surfaces were equipped with flettners embedded and a cutting comprising of the compensations of balancing.
    The aerofoil, of very lengthened trapezoidal drawing, was of a great purity at the same time as of a large smoothness. It was established with the fuselage in median position and it was built around two principal members and of a false member being used as articulation at mobile surfaces. The ailerons were not very deep but long, while the camber flaps profited of generous size in order to find a speed of landing suitable. A differential order made it possible moreover to possibly combine the ailerons with the camber flaps at the time of particularly short landings.
    It is obviously the aerofoil which carried the power tractory in the shape of two motors 18 cylinders in double star Mitsubishi Ha.211 Ru developing 2 200 CH. Each engine was equipped with a turbo-compressor of overfeeding and received a very beautiful remarkably elaborate hooding which reduced the aerodynamic trail appreciably. The careened spindle, which prolonged each engine, contained the housing of each principal half-train, then that of the pipes of the turbo-compressor whose exhaust was carried out with the back point of the spindle with a considerable propelling effect.
    The principal landing gear was of the traditional type with long oil and air legs carrying each one a tire with low pressure. The brakes of wheels, particularly effective, were carried outside each rim. Two sets of two double doors sealed the residences of the train.

    The first prototype Mitsubishi Ki.8301 left factory in October 1944 and as soon as it was presented at the authorities, those were enchanted by its promising forms. It was indeed very beautiful and gave at the same time an impression of power and flexibility. It is on 18 November 1944 that the first flight took place, moreover conclusive, but the following was often disturbed by the frequent American raids and the program of experimentation took delay.
    The test pilots were filled with enthusiasm by the high speed of the apparatus, but especially by its exceptional handiness, all the more extraordinary as the plane was relatively large and heavy. A certain number of modifications appeared however necessary and in particular a reinforcement of the engine mounts and empennage. These modifications were made to the three other prototypes in the course of construction and which the last left factory in April 1945. The Ki.8302 prototype accomplished its first flight on March 9 945, while the prototypes Ki.8303 and Ki.8304 were tested in flight on June 25, 1945. The empennage accepted moreover small external masses of balancing.
    It was in January 1945 that Mitsubishi Ki.8301 reached the speed of 686 km/h to 8 000 meters of altitude, which constituted a record for an apparatus of this class. It is to be specified that Ki.83, in spite of its size and its weight, was able to carry out a loop 670 meters in diameter in 31 seconds at the speed of 650 km/h, which was quite simply amazing. It thus appears that it was a great technical success and it was so true that the imperial Navy expressed the desire to have a certain number of specimens of series.
    This very beautiful homage was however not determining. Indeed, the hour was serious and Koku Hombu was constrained, because of the frankly disastrous military situation, to give the priority to the interceptors single-engined aircrafts. The setting in production of Mitsubishi Ki.83 was initially deferred, then finally abandoned. There is not any doubt that if this model had been brought into operational service, he would have caused unpleasant surprised to the Allies, because he would have competed easily with Grumman F7F. "Tigercat" and De Havilland DH.103 "Hornet", with, moreover, one undeniable superiority of handiness. Let us specify that following many bombardments, there was not soon more but one prototype in in-flight status at the end of the hostilities. It naturally was captured and tested in flight by American specialists who did not dry up praises for his excellent and even astonishing performances.
    In the last months of the war of the Pacific, the engineering and design departments of the Mitsubishi company in Nagoya prepared another application of the same formula. In fact, it was about an alternative hardly modified of the Ki.83 model and equipped with the same engines, which was called Ki.95 (or Ki.83 Kai) and which was more particularly intended for the reconnaissance missions at long distance. The nose of the apparatus received two Ho.5 guns of 20 mm and a battery of cameras. This model, whose model out of full-scale wooden was built, was intended to replace the famous Ki.46 model, but it remained of course at the stage of the project, like besides another development, Ki.103, which, was to him a new version of hunting to long operating range.

     Single-seat hunter
     two 18 cylinder motors in double star Mitsubishi Ha.211 Ru (Ha.43/11 Ru) developing 2 200 CH with 2900tr/mn, 2 070 CH with 2800tr/mn (1 000 meters of altitude), 1 930 CH with 2800tr/mn (5000m), 1 930 CH with 2800tr/mn (6400m) and 1720 CH with 2 800 rpm (9 500 m). These engines actuated metal four-bladed propellers at constant speed (licence V.D.M.) 3,50 m in diameter.
     Scale.....15.50 m
     Length...... 12.50 m
     Height...... 4.60 m
     Wing surface..33.52 m2
     Tare weight... 6 308 kg
     Payload... 2 487 kg
     Laden weight... 8 795 kg
     Maximum speed 705 km/h to 9 000 m and 655 km/h to 5 000 m
     Cruising speed...... 450 km/h to 7 900 m
     Climbing speed... 10 000 m in 10'
     Ceilings maximum.......... 12 660 m
     Normal autonomy........ 2 800 km
     Maximum autonomy...... 4 280 km
     2 Ho.203 guns or Ho.105 of 30 mm
     2 Ho.5 guns of 20 mm
     2 bombs of 50 kg.

    I'll keep looking for a hard copy of it's history and when I find something of interest i'll post it here for you to ingest...

    Oh, my thanks to everyone who's shown interest and given info...


    [This message was edited by SECUDUS on Fri February 27 2004 at 02:53 PM.]
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  2. #12

    Mitsubishi Ki83

    The site i use all the time is wikipdia. I am well aware that people say that it's not very informative and crap. But i love it. You can do a search entitled "list of military aircraft of japan" it includes my all time favorite, the mitsubishi ki83, along with the immortal zero. Go there & check it out for yourself. I don't know where you got your info, but it's not correct.
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