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Aviation History
1917
1917 - 0246.PDF
Frederickson rotary engine (70 h.p.) is employed, mounted ona steel plate at the nose of the nacelle. All control wires are solid, except when they run over the ball-bearing pulleys, MARCH 15, 1917. from the engiae is led through nickeled Tpipes below thelower plane. General dimensions :—Span (top) 26 ft., (bottom) 20 ft.; chord, 4 ft.; gap, 5 ft. 6 ins.; supporting surface182 sq. ft. ; overall length, 20 ft. ; weight (empty), 630 lbs. ; speed range, 35-50 m.p.h.; climbing speed, 300 ft./min. when cable is employed. General dimensions :—Span (top) 33 ft., (bottom) 22 ft.; chord, 4 ft. 6 ins.; gap, 4 ft. 4 ins. ; weight (empty), 500 lhj. The S. S. Pierce Sporting Tractor. This is a small, single-seater tractor biplane, lightly butstrongly built, specially to meet the requirements of the sportsman. The fuselage is of streamline form, circular insection, mounted 6 ins. above the lower plane on the central interplane struts. The engine, designed specially for themachine by the S. S. Pierce Aero Corp., is a 3-cyl. Y-type, air-cooled, of 35-40 h.p. The planes are staggered 1 ft. andare set at 4° incidence. There are only four pairs of interplane struts, two central pairs to which the fuselage is attached,and one pair on each side of the latter. The tail planes are of somewhat unusual design, the main horizontal surface,which is semi-circular in shape and serves as the elevator, is pivoted on a small horizontal surface pro-jecting from the sides of the rear extremity of the fuselage. The rudder is hinged to atriangular vertical fin. Lateral control is by ailerons on the top plane. A V-type landingchassis is employed, carrying a pair of 26-in. by 4-in. wheels, 4 ft. 4 ins. apart. A Paragontractor screw, 7 ft. dia. by 3 ft. 6 ins. pitch, is coupled direct to the engine. ^The exhaust The Witteman-Lewis Training Tractor. f In general appearance the Witteman-Lewis machine follows the conventional military tractor-type biplane, special attention having been paid to strength rather than original design. It has a rectangular section fuselage, tapering to a vertical knife-edge at the rear, and a turtle-deck top. Pilot's At the AmericanAero Show Two H ispa no-Suizaaero engines, which engine is now beingmanufactured i n America by one ofthe subsidiary companies of theWright-Martin Aircraft Corp. Inthe top right-hand corner is the 4-cyl.vertical 75 h.p. model, and below,the8-cyl.V150h.p. By courtesy of the "Automobile," New York. •0. •0.
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