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Aviation History
1921
1921 - 0457.PDF
JULY 7, 1921 THE BRISTOL COMMERCIAL TEN-SEATER BIPLANE A NEW commercial type aeroplane has recently been com-pleted by the Bristol Aeroplane Co., and we give below some brief particulars of this machine, together with photographsand general arrangement drawings. This new Bristol is a large ten-seater single-engined tractorbiplane, having an enclosed cabin for eight passengers and an open cockpit for pilot and mechanic. The 450-h.p. Napier " Lion " engine, with which thismachine is fitted, is on a readily detachable mounting which also carries the nose radiator and oil tank. Complete accessto the engine can be obtained by releasing six self-locking fasteners, no part of the cowl being removed from themachine. Electric starting is fitted, as well as hand turning gear operated from the ground. The fuselage is of deep rectangular section, with curved each seat. These fold against the side of the saloon andare readily accessible, the waste pipe discharging through the floor. In the roof of the machine a special emergency exit isprovided, measuring 2 ft. 2$ ins. by 2 ft. 2 ins. This is operated by a quick release gear should occasion arise. When it is desired to use the machine solely for the trans-port of cargo the space available is : length, 10 ft. 6 ins. ; height at centre, 5 ft. 9 ins. ; width, 4 ft. The pilot's and mechanic's cockpit is located high upin the fuselage at the leading edge of the top plane. An exceptionally fine range of vision is thus provided.Below the pilot's cockpit is a compartment 4 ft. 6 ins. long by 4 ft. wide by 2 ft. 6 ins. high, accessible through atrap door in the underside of the fuselage. This is intended THE BRISTOL COMMERCIAL TEN-SEATER BIPLANE : Three-quarter front view. top deck, tapering to a shallow vertical knife-edge at the rear ; the fuselage completely fills the gap between the planes. The saloon, or passengers' cabin, extends from the region of the front main wing spars well aft of the planes. Access to the cabin is by way of a door at the rear of the former, on the port side. Six of the passengers are located in separate seats, three a side, facing forward, and the other two pas- sengers sit at the front end of the cabin facing aft. The seats are collapsible, and when folded project only five inches from the cabin sides, leaving a maximum of floor space should it be desired to carry cargo in lieu of pas- sengers. Windows, which can be opened, are fitted the full length of both sides of the cabin, and heating is provided by means of hot air muffs round the exhaust pipes. For the convenience of passengers liable to air-sickness a small concealed self- emptying basin has been provided in close proximity to for the conveyance of passengers' luggage or for othersuitable cargo. Between the engine compartment and the pilot's cockpitis a steel fireproof bulkhead, and all control connections pass through glands. No petrol is carried in the body ofthe machine aft of this bulkhead. In the pilot's cockpit a complete wireless telephone andtelegraph installation is installed, and has been fitted so as to be completely accessible to the mechanic. In orderto allow of communication between the pilot and the pas- sengers a small trap door has been provided to allow ofmessages being passed when required. Single control of the wheel type is fitted, all cable pulleysbeing five inches in diameter. The tail incidence can be varied by a lever and quadrant adjacent to the pilot, totrim the machine under all conditions of speed and load distribution. All control surfaces are unbalanced. THE BRISTOL COMMERCIAL TEN-SEATER BIPLANE : Side view. 457
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