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Aviation History
1921
1921 - 0438.PDF
JUNE 30, 1921 THE ANSALDO A-300 C COMMERCIAL BIPLANE:View of the passengers' cabin. The main characteristics of the Ansaldo A-300 C are :—Span 44 ft. 9$ ins. Chord .. . . .. • • . . 6 ft. 6 ins.Gap 5 ft. 6 ins. : Overall length 31 ft. 8 ins. Overall height .. 10 ft. 9^ ins.Area of main planes .. .. .. 473.4 sq. ft. Weight (total) 4>I87 lbs-Weight (empty) 2,534 lbs. Useful load 1,653 lbs.Loading/h.p. .. ... .." .. .. 14 lbs. Loading/sq. ft. 8.85 lbs.Speed range . . . . .. .. 43-120 m.p.h. Cruising speed .. .. .. : • 100 m.p.h. Endurance .. .. .. • • 5 hrs. Ceiling (full load) 16,000 ft. Climb (15 mts.) 7,000 ft.The Ansaldo A-300 C was designed by the firm's engineer, Sig. Brezzi, specially for the transport of passengers, etc.,and is essentially different in design from the war machines produced by this firm. Considering the useful load carried (1,600-1,700 lbs.), the power employed (300 h.p.) is by nomeans excessive, and its aerodynamic properties and general characteristics are such that it has a good all-round per-formance, especially for commercial transport work, without any sacrifice of safety or comfort of passengers. It is statedthat this machine is exceptionally nice to fly. Two alternative methods of construction are employed forthe fuselage—one with tubular steel framework, the other, wood. In the metal type the front portion of the fuselage,from nose to leading edge of the main planes, containing the engine—a 300 h.p. Fiat A-12-bis—is made detachable, whichgreatly facilitates the changing of engines and transport. In other respects both types have the same general charac-teristics. The fuselage is of deep rectangular section, extend- ing from top to bottom planes, and tapering sharply to avertical knife-edge at the rear. Aft of the engine compart- ment is the pilot's and mechanic's cabin, which is totallyenclosed and is provided with front and side windows, and a door at the side. At the rear of this cabin is another forthe passengers, extending beyond the trailing edge of the main planes. The passengers' cabin is large and comfortable—measuring, roughly, 5 ft. long, 6 ft. high, by 4 ft. wide—and accommodates four passengers, who are seated in wickerarmchairs. Access to the cabin is by way of a large door in the side of the fuselage, and a good view is obtained fromthree windows on each side. The rear part of the fuselage, aft of the cabin, is detachable, and is covered with fabric ;the cabin portion is covered with ply-wood, and the engine section with sheet aluminium. The radiator is mounted inthe nose of the fuselage, and is provided with a means for varying the exposed area of cooling surface. The main planes are without stagger or sweepback, andupper and lower surfaces are of equal span and chord, and are identical, thus facilitating replacement. They are infour sections, attached to small wing roots growing out of the fuselage, which are braced to the latter by faired tubularsteel struts. There are two pairs of interplane struts each side, consisting of round steel tubes faired to a streamlinesection, and external bracing is by streamline-wire. Un- balanced ailerons are fitted to all four wings. The tail consistsof a triangular horizontal stabilising surface, divided un- balanced elevators, a vertical fin and a balanced rudder. Theangle of incidence of the tail plane can be varied, during flight, from the pilot's cockpit. The landing chassis is exceptionally wide—nearly 10 ft.—and consists of two V's (metal) attached to the lower centre section connected by a wing-form axle, braced to the fuselageat the centre by inverted V struts. The factor of safety of the wings is 8£, and over 9 for thefuselage. Petrol is delivered from the main tank to a service tank in the roof of the pilot's cabin, thence to the engine. O.A.LENQTH 3l'-8' SPAN 44'-9-5 AREA OF WINO5..!*73- ANSALDO A-3OOC COMMERCIAL BIPLANE 3OO H=» FIAT THE ANSALDO A-300 C COMMERCIAL BIPLANE^ General arrangement drawings. 438
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