Lebed-XI, Biplane Type A1

20k b/w, late series Lebed-XI (with Salmson engine) at "History of aircraft construction in the USSR" by V.B.Shavrov, Vol.1 p.181;

T
wo-seat reconnaissater, known in many variants. Six sizes of the wing box (two- or three-strut), variety of engines (Mersedes 100hp and 150hp, Benz 120hp, 140hp and 150hp, Maybach 160hp...). All this indicates that this designation 'unites' several types of captured and repaired 'Albatros'.
This assortie (known as Type A1) includes about 10 aircraft.
Few Lebed-XI of later series were powered by 150hp Salmson with ring exhaust collector, sending gases above the upper wing. They carried large pointed spinner, and are transitional to the Lebed-XII.
20k b/w drawing from "History of aircraft construction in the USSR" by V.B.Shavrov, Vol.1 p.180

References:
  • "History of aircraft construction in the USSR" by V.B.Shavrov, Vol.1 p.180-181;
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  • Lebed XI
  • Technical data
    Type Biplane Type A1Lebed-XI
    Function Reconnaissance
    Year 1916 1916
    Crew 2 2
    Engines 1*150hp Benz 1*150hp Salmson
    Length 8.0m 8.0m
    Wingspan 13.0m 14.5m
    Wing area 40.8m2 43.0m2
    Empty weight 735kg 820kg
    Loaded weight 1085kg 1170kg
    Wing load 26.7kg/m2 26.3kg/m2
    Power load 7.3kg/hp 7.8kg/hp
    Speed ? 135km/h
    Ceiling ? 3500m
    Armament
    Guns 2*mg 2*mg
    Bombs ? 90kg
    Modified October 4, 1997
    by Alexandre Savine;
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