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Aviation History
1917
1917 - 0577.PDF
JUNE 14, 1917. I/LIGHT] THE BURGESS "B.P." PRIMARY TRAINING IN carder to meet the requirements of the U.S. Army for a machine for the primary training of pilots, W. Starling Burgess, of the Burgess Co., Marblehead, Mass., U.S.A., designed the tractor biplane described and illustrated herewith. The main characteristic of this machine is in the seating arrangement, the TRACTOR BIPLANE. Throughout the whole machine, simplicity of con- struction, combined with strength, have been the two considerations that have received the designer's attention, and in both experimental and official trials the machine gave very satisfactory results. The large plane area, 437 sq. ft., and the wing section, Three-quarter front view of the Burgess training tractor biplane. struts is clearly shown. In this view the arrangement of the instructor and pupil being seated side by side—an arrangement which is preferred by some instructors. The extra width of the fuselage at the cockpit due to this seating arrangement is by no means excessive, and, indirectly, is the means of producing a fuselage of nearly perfect streamline form. The general appearance is also added to as a result of this larger width. Another noticeable feature is in the arrangement of the interplane struts. These are not only inclined R.A.F. 3, render the machine comparatively slow and easy for the pupil to handle. Both top and bottom planes are in two sections each, the top joined at the centre, and the bottom attached to the fuselage. The dihedral angle of both planes is |° and the angle of incidence is 1J0. The top plane is staggered forward 1 ft. 9 ins. The main spars are spaced 4 ft. apart, the forward spar being located 9 ins. from the leading edge. The attachment of the interplane struts occurs at the B B 3 B B B Side view of the Burgess training tractor biplane. El B H B a «-*B . B El B H B B B B B B EC forward, as a result of staggering the top plane, but they are also inclined outwards—a practice common with several types of Austrian machines. It will also be noticed that they are inclined outwards at angles which increase from the innermost to the lutermost struts. following distances from the centre :—Fuselage struts, 2 ft. 8 ins.; middle struts, 9 ft. ij ins. (top), 7 ft. 2 ins. (bottom); outer struts, 16 ft. 9 ins. (top), 14 ft. 5 ins. (bottom). The wing-tips are raked 160. Ailerons, of 18 sq. ft. area each, are hinged to the rear spar of top plane only. The area of the top plane, excluding 577 E 2
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