Jane's All The World Aircraft 1919
THE WITTEMANN-LEWIS TRACTOR BIPLANE.
Type of machine Wittemann-Lewis.
Name or type No. of machine "T. T."
Purpose for which intended Military training.
Span 42 ft. top; 34 ft. bottom plane.
Gap 5 ft. 6 In.
Overall length 27 ft. 2 In.
Maximum height 11 ft. 6 1/2 in.
Chord 5 ft. 6 In.
Total surface of wings 400 sq. ft.
Total area of tail 28.8 sq. ft.
Area of elevators 21.6 sq. ft.
Area of rudder 12 sq. ft.
Area of fin 5.37 sq. ft.
Aran of each aileron & total area 17.44; 38.88 sq. ft.
Engine type and h.p. Hall-Scott, 100 h.p.
Weight of machine empty 1,560 lbs.
Load per sq. ft. 5.41 lbs.
Weight per h.p. 21.6 lbs.
Tank capacity in hours 3.6 hours.
Tank capacity in gallons 36 gallons.
Speed 74 m.p.h. max, 38 m.p.h. min.
To 3,000 feet in 10 minutes.
Disposable load apart from fuel 605 lbs.
Total weight of machine loaded 2,165 lbs.
Flight, March 15, 1917.
AT THE AMERICAN AERO SHOW - SOME NEW TYPES.
The Witteman-Lewis Training Tractor.
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 and passenger's cock-pits are in tandem, the former one being situated back of the planes. A 70 h.p. Hall-Scott A-7 engine is mounted in the nose, with the radiator in front, and fuel capacity is provided for a flight of three hours' duration. A V-type chassis is employed, with bridge-type shock absorbers. Dep. dual control is fitted. General dimensions :- Span (top) 42 ft., (bottom) 34 ft. ; chord, 5 ft. 6 ins.; gap, 5 ft. 10 ins.; overall length, 27 ft.; net weight, 1,400 lbs.; speed range, 35-70 m.p.h. The triangular tail surface has an area of 36 sq. ft.