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Aviation History
1933
1933 - 0043.PDF
FLIGHT, JULY 6, 1933 TWO JAPANESE MILITARY MACHINES POWERED with a Nakajima " Jupiter VII " super charged engine, the Naka jima type " 91 " is a high altitude single-seater fighter. This mono plane was designed and constructed by the Nakajima Aeroplane Co., Tokio, with the co-operation of the Technical Department of the Army Air Force. The constructional features are not yet published, but it will be of interest to note that the load factor of this plane is 18, the same as in the recent French fighter com petitors. Performance figures are as follows: — Maximum speed at 3,000 m., 310 km./h. (192 m.p.h.). Rate of climb, 3,000 m. in 3 m. 20 sec. Rate of climb, 5,000 m. in 8 m. 40 sec. Service ceiling, 8,500 m. (28,000 ft.). The army has published the opinion that the Nakajima monoplane possesses a superior manoeuvrability (for instance, several turns of a vertical upward spin are possible without any acceleration), and can be more easily handled in aerobatics than some single-seater fighters abroad which have recently won the highest reputation in point *of performance, although its maximum speed is not so high. Altogether, the Japanese army believes that the " 91 " monoplane is one of the finest single-seater fighters in the world. Both the Nakajima and the Kawa saki fighters are the standard equipments for the Japanese Army Air Force.) The Kawasaki K.D.4 general-purpose biplane, with Kawasaki B.M.W. 450 h.p. engine (known in the army as UPPER PHOTO ; The Nakajima LOWER PHOTO : The Kawasaki 91 " s.s. fighter, " Jupiter VII " engine. 88 " general- purpose machine with 450-h.p. B.M.W. engine. The machine was presented by people of Ibaraki prefecture, and the Japanese name " Aikoku " means " The Patriot." of A MILLIONAIRE'S GIFT : The Nakajima " 91 " was presented to the Army by Mr. Kobuse, a millionaire. Farnborough Experimental Beacon AIR MINISTRY notice to airmen, series A, No. 37 me year 1933, states that: — win l> exPer"nenta1 track indicating airway light beacon m ne operated until further notice at Fariiborough Aero- •ome between the hours of sunset and sunrise. 270 H the sectors 70 deg- to 90 deg. and 250 deg. to everv6!" the beacon exhibits a white group-flashing light ; n eh SCC' The 8rouP-nashing light changes gradually and a°-ter across each sector (as viewed from an aircraft), conslsts of three white flashes separated by eclipses of the type " 88 "), is the standard equipment for the " reconnaissance " class in the Japanese Army Air Force. Span, 15.20 m. (50 ft.); length, 11,28 m. (37 ft.); height, 3.30 m. (10 ft. 9 in.); wing area, 48 m.3 (517 sq. ft.); weight empty, 1,760 kg. (3,875 lb.); disposable load, 1,250 kg. (2,750 lb.); gross weight, 3,010 kg. (6,625 lb.); max. speed, 230 km./h. (143 m.p.h.). The constructional features: The rectangular fuselage is built up of a number of transverse frames covered forward with sheet duralmin and aft with fabric. The wings are built up of two drawn sheet-steel spars and duralmin ribs covered with fabric. Divided type wheel under carriage, side vees are streamlined. In the year before last, two of this type succeeded in the long-distance flight from Tokio to Formosa, including the night flying over the China Sea for more than fifteen hours' endurance, and more lecently, by an urgent demand in Manchuria, a squadron of this 'plane despatched from Tokorozawa, Tokio, having no time to cover the Korean routes, made the 2,000 kilo metres non-stop flight in formation across the Japan Sea in a straight line to Mukden with great success (under the command of Capt. Y. Fujita). A considerable number of this " 88 " type, it will be of interest to note, are now being used in Manchuria for bombing rebels. J. W. $53 JS equal duration, in the centre of each sector only, i.e., on the bearing 80 deg. or its reciprocal 260 deg., correspond ing to the track Farnborough to Croydon or Farnborough to Andover, respectively. Elsewhere, from 90 deg. through South to 270 deg., and from 290 deg. through North to 70 deg., the beacon exhibits one white flashing light every 5 sec. In addition, the beacon carries an identification light of short range, comprising a red code light flashing ths- Morse letter " U " every 10 sec. The visibility of the main beacon light is approximately 50 miles. 679
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