M.Goodall, A.Tagg British Aircraft before the Great War (Schiffer)
Deleted by request of (c)Schiffer Publishing
P.Lewis British Aircraft 1809-1914 (Putnam)
Humber Tractor Biplane
At the 1910 Olympia Aero Show, Humber Ltd., of Coventry, exhibited, together with the le Blon and the Lovelace Monoplanes, a three-seat tractor biplane designed specifically for tuition purposes. The engine was mounted on the lower wings, the pilot being seated on the trailing-edge, with a pupil's seat on each side; triple controls were provided, with means for the instructor to override the pupil's movements. The mainplanes were made in three sections for easy dismantling, and all spars and struts - with the exception of the tail booms - were of steel tubing. A simple twin-wheeled undercarriage was located under the mainplanes, with a single tailwheel supporting the empennage, which was similar to that of the Humber Lovelace Monoplane. Lateral control was by wing-warping. The engine was a 50 h.p. Humber which drove a 7 ft. diameter propeller. Span, 41 ft. 6 ins. Length. 36 ft. Wing area, 482 sq. ft. Estimated speed, 50 m.p.h. Price, ?1,100.
Flight, March 12, 1910
THE SECOND OLYMPIA AERO SHOW.
Two British-built monoplanes of the Bleriot type are on view on Messrs. Humber's stand, as well as a monoplane and a biplane designed by Capt. Lovelace. The main planes of the last-mentioned are of 41 '6 span, and the total lifting surface is 526 sq. ft. The Lovelace type monoplane is of 29 ft. span with a total lifting surface of 232 sq. ft. In each the engine fitted is a 50-h.p. 4-cyl. water-cooled Humber.
Flight, March 26, 1910
FLYER SILHOUETTES FROM OLYMPIA.
Leading Particulars of the Humber Biplane.
General Dimensions.-Areas-Main planes, 482 sq. ft.; elevator, 16 sq. ft. ; rudder, 12 sq. ft.
Lengths.-Span, 40 ft.; chord, 6 ft. 8 in.; camber, 3 1/2 in.; gap, 5 ft. ; skid track, 6 ft. ; overall length, 33 ft.
Angle.-Incidence, 6 1/2°.
Materials.-Steel struts and spars, hickory chassis; Mackintosh fabric.
Propeller.-Humber; diameter, 6 ft. 11 in.; pitch, 3 ft. 6 in.; material, laminated mahogany, spruce and walnut.
Weight. - Unknown at present.
Speed of Flight.-50 m.p.h.
System of control.-Rudder, elevator, warping of wings.
THIS machine is specially constructed solely for tuition purposes. It has three seats, the pilot's seat in the middle and a pupil's seat on either side. The control is in triplicate, but a pedal solely under the pilot's command enables the effect of the pupils' movements to be suspended. All main spars and struts are of tubular steel with the exception of the outrigger spars that carry the tail.
The main spars of the main frame are jointed so that the machine can be dismantled in three sections. The control is the same as on the Humber monoplane designed by Capt. Lovelace.