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Aviation History
1931
1931 - 0026.PDF
FLIGHT, JAXI-AKV 9, 1931 These two views illustrate the actual "giant " pro-portions of the Caproni 90 P.B.—especially the lower picture showing the landing wheels. dihedral angle. The short upper plane is without dihedral,and is supported by two pairs of vertical struts from the lower centre section, and a pair of sloping (very much so,it will be observed) struts at each extremity. The six engines fitted in the Ca.90P.B.J are 1,000 h.p.Isotta Fraschini " Asso " models, arranged in three groups in tandem, one group mounted centrally between the wings,above the fuselage, and the other two mounted on the lower centre section. Although he fitted six engines in this machine, Sig. Capronistated that, in his opinion, the tri-motor type of aeroplane was the best solution, and he would have installed onlythree in the Ca.90 had he been able to obtain suitable engines—the multiplicity of engines, he states, enormouslycomplicates matters for the pilot who should be able to devote the maximum possible attention to the control ofthe machine itself. However, the control of the Ca.90 is nevertheless statedto be exceedingly light, the Italian pilot, Domenico Antonini, who carried out the test flights, said he found the controlsas light as those of much smaller machines, and stated further that he found the instruments, etc., so well arrangedas to eliminate all the difficulties that might be expected on a machine of this size and with so many engines. The Ca.90 carries a useful load of about 22 tons, usingthe international safety factor, or 35 tons using the German safety factor ; it can carry this load over a range of 1,243 miles(2,000 km.). In addition to bomb gear, this machine is equipped with efficient armament, comprising a gun positionin the extreme nose of the fuselage, another well behind the wings, and a third on the top plane. It is stated that the Ca.90 can easily be adapted forcommercial work, it being possible to provide comfortable accommodation, in a spacious cabin, for a hundred or morepassengers. Furthermore, with but little increase in weight it would be possible to modify the fuselage so as to render itwatertight, and thus allow of alighting and normal floating on the water, or convert the machine into an amphibian. In conclusion, it should be mentioned that the pilotAntonini established several international records on this machine on February 22 at Cascina Malpensa, viz., with aload of 10,000 kg., 1 hr. 31 min. duration, 3,231 m. altitude, and others for various loads. CAPRONI 90 P.B. Six Isotta Fraschini 1,000 h.p. " Asso Length Wing Span (top) ,, (bottom). Wing Area .. Tare Weight.. Disposable Load Gross Weight. . Wing Loading Power Loading Maximum Speed Landing Speed Ceiling Normal Range "High-speed Figure 29 m. (95 //.).38-81 m.'(127 ft. 4 in.) 49-56 m. (162//. 6 in.). 563 sq.m. (6,057-78 sq. ft.). 15,000 kg. (33,075 lb.). 30,000 kg. (66,150 lb.). 45,000 kg. (99,225 lb.). 80 kg.isq. m. (16-38 Ib./sq. ft.' 7-5 kg.jh.p. (16-53 Ib.'h.p.)'. 210 k.p.h. (130-5 m.p.h.). 90 k.p.h. (56 m.p.h.). ••'. 5,000 m. (16,4J)5 ft.). 2,000 km. (1,243''miles). 2kT> = 151 One of the six Isotta Fraschini " Asso " engines usedon the Gaproni 90 P.B. It has 18 cylinders and develops 1,000 h.p. at 1,700 r.p.m. ; the weight, including air-screw hub is 800 kg. (1,764 lb.). ?8
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