------------------+------------------------+------------------------+------------------------------- | ~1912-13.~ | ~1912-13.~ | ~1913.~ | Military. 2-seater. | Military. 1-seater | Hydro-biplane. | | | 2-seater ------------------+------------------------+------------------------+------------------------------- ~Length~ | 32 feet (9.75 m.) | 25 feet (7.60 m.) | 33 feet (10 km.) ~Span~ | 40 feet (12.20 m.) | 32 feet (9.75 m.) | 44 & 36 ft. (13.40 & 11 km.) ~Area~ | 276 sq. ft. (26 m squared.) | 195 sq. ft. (18 m squared.) | 410 sq. ft. (38 m squared.) ~Weight~ (total) | ... | 750 lbs. (340 kgs.) | 1250 lbs. (507 kgs.) ~Motor~ h.p.| ... | 50 Gnome. | 80 Gnome or 100 Anzani ~Speed~ | 55-65 m. (90-105 km.) | 60 m. (97 km.) | 65 m. (105 km.) ------------------+------------------------+------------------------+------------------------------- Notes.--Petrol for 5 hours (higher endurances can be fitted). Specially designed for military work--all steel construction. All parts unwelded to admit of rapid displacement. Clear observation provided for. ~Fuselage.~--The fuselage is ~V~ shaped and constructed of weldless steel tubing in the form of a lattice girder. The main longitudinals are of round section; cross members, oval section. Connections are not welded but made with strong steel clips so that should any member become damaged a new one can be readily arranged. The front portion is covered with sheet metal giving additional strength and reducing the head resistance. Stream line form tapering towards the rear which is covered with fabric. ~Chassis.~--Two long skids connected up to fuselage by metal struts. Each skid borne by a pair of wheels, axle held down by elastic shock absorbers. On the axle of the wheels are fitted steel springs which take side thrust. Each pair of wheels held by radius rods forming a bogie. ~Control.~--Patent Blackburn triple, independent or simultaneous on hand wheel, but special foot control for rudder is fitted if desired. In 1912, five machines were built, of which two were of the mil. model. Others, non-military models (see last edition.) [Illustration: Military monoplane.] [Illustration: BLACKBURN. Military Type. Two-seater. UAS] [Illustration: BLACKBURN. Naval Type.]