G.Swanborough, P.Bowers United States Military Aircraft Since 1909 (Putnam)

PACKARD-LE PERE LUSAC-11

   The Packard-Le Pere LUSAC-11 was designed for the Engineering Division by Captain Le Pere of the French Aviation mission to the U.S. and built by the Packard Motor Car Co. The LUSAC-11 showed heavy French and Italian design influence, with the 400-h.p. Liberty engine carried in a plywood fuselage. Out of 25 production models and two prototypes built, two LUSAC-11s reached France. The LUSAC-21 (40024) was the same airframe with a 16-cylinder 420-h.p. Bugatti engine and the LUSAC-25 (40025) was another variant.
   LUSAC-11: Span, 39 ft. 0 1/4 in.; length, 25 ft. 4 5/8 in.; wing area, 415-6 sq. ft.; gross weight, 3,655 lb.; high speed, 136 m.p.h.

Jane's All The World Aircraft 1919

THE LE PERE FIGHTER.
  
   Captain G. Lepere, an aeronautical engineer in the French Air service, designed the Lepere "Fighter" with a Liberty engine for production in the United States. It was intended for use as a fighter or reconnaissance machine, and carried two fixed guns firing forward, synchronised with the engine, and two Lewis guns attached to a movable Scarf ring surrounding the rear cockpit.
  
General Dimensions.
   Span, upper plane 39 ft. 0 1/4 in
   Span, lower plane 39 ft. 0 1/4 in.
   Chord, both planet 5 ft. 6 in.
   Gap between planes 5 ft. 0 5/8 in.
   Stagger 2 ft. 0 15/16 in.
   Length over all 25 ft. 4 5/8 in.
   Height over all 9 ft. 10 7/8 in.
  
Weights.
   Machine empty 2,468 lbs.
   Pilot and gunner 360 lbs.
   Fuel and oil 475 lbs.
   Armament 352 lbs.
   Total 3,056 lbs.
  
Performances.
   Height. Speed. Time of Climb.
   0 ft. 136 m.p.h. 0 mins. 0 secs.
   6,000 ft. 132 m.p.h. 5 mins. 35 secs.
   10,000 ft. 127 m.p.h 10 mins. 35 secs.
   15,000 ft. 118 m.p.h. 19 mins. 15 sees.
   20.000 ft. 102 m.p.h. 41 mins. 0 secs.
   Service ceiling, or height beyond which the machine will not climb 100 feet per minute, 20,800 feet.
  
Engine Group.
   A Liberty " 12 " 400 h.p. engine is used. It develops 400 h.p. at 1,750 r.p.m.
   Bore, 6 ins.; stroke, 7 ins.; weight, without propeller and water, 858 pounds.
   Two Zenith Duplex carburetters are used.
   The radiator is located in the upper plane centre section, and its location has necessitated some slight modifications in the engine to increase the water circulation.
   Propeller, 9 ft. 4 ins. in diameter.
   Front propeller plate projects 11 3/4 ins. forward of fuselage nose.
   Propeller axis 15 7/16, ins. below top of upper longerons.
   In flying position the propeller hub is 5 ft. 2 7/8 ins. above the ground line;
   when at rest on the ground the propeller hub is 6 ft 1 5/8 ins. above ground.

W.Green, G.Swanborough The Complete Book of Fighters

PACKARD LUSAC-11 USA

   Designed at the behest of the US Army Engineering Division by Georges Lepere, a member of the French Aeronautical Mission to the USA, the LUSAC (an acronym for Lepere US Army Combat) was a two-seat two-bay staggered biplane of wooden construction powered by a 425 hp Liberty 12 water-cooled engine. Intended armament comprised two fixed forward-firing 0.3-in (7,62-mm) guns with a third on a flexible mounting in the rear cockpit. Flown for the first time in August 1918, the Lepere two-seat fighter was placed in production as the LUSAC-11 by the Packard Motor Company, but although large-scale manufacture was envisaged, only 30 had been completed when contracts were terminated with the end of World War I. The LUSAC-11 never entered service with the Air Service, but established several world altitude records in the early 'twenties.

Max speed, 133 mph (214 km/h) at sea level.
Time to 6,500 ft (1980 m), 6.0 min.
Range, 320 mis (515 km).
Empty weight, 2,561 lb (1162 kg).
Loaded weight, 3,746 lb (1699 kg).
Span, 41 ft 7 in (12,67 m).
Length, 25 ft 3 in (7,69 m).
Height, 10 ft 7 in (3,22 m).
Wing area, 415.6 sq ft (38,60 m2).