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Curtiss JN-5 / JN Twin

Страна: США

Год: 1916

Reconnaissance aircraft

Curtiss - JN-4 Jenny - 1916 - США<– –>Curtiss - L - 1916 - США

P.Bowers Curtiss Aircraft 1907-1947 (Putnam)

Twin JN (Model 1B) - The Twin JN of April 1916, tentatively designated JN-5, was an enlargement of the new JN-4 model to a twin-engined type for observation work. Wing span was increased by use of an 11 ft 4 in (3,45 m) centre section for the upper wing and the installation of short panels between each lower wing and the fuselage. The standard JN-4 outer wing panels had one degree of dihedral outboard of the flat centre-sections on the prototype and 3 1/2 degrees on the production versions.
   The need for increased tail area was met by installing a Curtiss R-4 rudder and an enlarged fin on the prototype and a modified R-4 fin on the production versions. Directional control was still marginal but was improved somewhat by modifying the starboard Curtiss OXX-2 engine to rotate in the opposite direction to that in the port side unit as was done on earlier Curtiss twin-engined flying-boats.
   In spite of the two engines, the Twin JN was still only a two-seat machine and crew efficiency was greatly handicapped by the wide separation between the pilot's cockpit aft of the wing and the observer in the nose.
   The US Army acquired eight Twin JNs in 1916 and early 1917, seven by direct purchase and one a donation to the Militia by private citizens. These saw very brief service on the Mexican border in 1916. The US Navy acquired two examples, which were operated as twin-float seaplanes.
   One Army model, serial number 428, differed greatly from the other Twin JNs. It was so retrograde in both aerodynamic and structural detail that in the absence of other evidence the author believes it to be an entirely different and somewhat earlier aeroplane, possibly the rumoured 'Twin R'. Since its general configuration was similar to the Twin JN, Curtiss doubtless found it easier to sell this existing aeroplane to the Army as a modified Twin JN than as a new and entirely separate design.
   US Army serial numbers: 102/107,428,470 (delivery of 470 doubtful).
   US Navy serial numbers: A93, A198

Twin JN
   Reconnaissance aircraft. Pilot and observer. Two 90 hp Curtiss OXX-2.
   Span 52 ft 9 3/8 in (16,08 m) (upper), 43 ft 1 3/4 in (13,15 m)(lower); length 29 ft (8,83 m); height 10 ft 8 11/32 in (3,26 m): wing area 450,28 sq ft (41,83 sq m).
   Empty weight 2,030 lb (921 kg): gross weight 3,110 lb (1,411 kg).
   Maximum speed 80 mph (128,74 km/h); climb to 3,500 ft (1,067 m) 10 min: service ceiling 11,000 ft (3,353 m).
   One example had a Lewis machine-gun.

Twin R - Early in 1916 Curtiss converted an R-2 airframe to an experimental twin-engined type. No official designation is known beyond the reference to a 'twin-engine R'.

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


   The two-seat Curtiss Twin JN, tentatively designated JN-5, was developed from existing components, with standard JN-4 wings on a wider centre section and JN landing gear. While the prototype used the same dihedral as the JN-4, the other six on the Army order (serials 102-107) had increased dihedral and circular radiators. One twin JN presented to the New Mexico National Guard by the Aero Club of America was taken over by the regular Army (serial 428) and used with the others on the Mexican border in 1916. Span, 52 ft. 9 3/8 in.; length, 29 ft. 4 in.; height, 10 ft. 8 1/2 in.; wing area, 450 sq. ft.; gross weight, 3,150 lb.; high speed 85 m.p.h.

P.Bowers - Curtiss Aircraft 1907-1947 /Putnam/
The prototype Curtiss Twin JN was essentially a JN-4 enlarged to a twin-engined type. The propellers rotated in opposite directions.
Журнал - Flight за 1917 г.
The Curtiss J.N. twin-engined biplane.
Журнал - Flight за 1916 г.
The large biplane is one of the new twin engine machines, fitted with two 160 h.p. motors at the Atlantic Coast Aeronautical Station at Newport News, Virginia.
Журнал - Flight за 1916 г.
G.Swanborough, P.Bowers - United States Military Aircraft since 1909 /Putnam/
The production Twin JNs differed greatly in detail from the prototype. This was the first for the US Army, Serial No.102.
P.Bowers - Curtiss Aircraft 1907-1947 /Putnam/
Although delivered to the US Army in 1917 under the designation Twin JN, Serial No.428 appears to be an earlier and less refined design than the other Twin JNs.
Журнал - Flight за 1916 г.
THE CURTISS TWIN-ENGINE HYDROBIPLANE. - On this machine Victor Carlstrom, on August 25th last, put up a new American distance record, flying a circular route between Newport News and Cape Charles of 661 miles in 8 hrs. 41 mins. The weather was bad, and he carried as passenger a mechanic, whose services, however, were not called upon throughout the trip.
Журнал - Flight за 1918 г.
American aeroplane types of 1917-18: Curtiss "Twin JN".
Журнал - Flight за 1918 г.
American aeroplane types of 1917-18: Curtiss Twin "JN" Hydro.
P.Bowers - Curtiss Aircraft 1907-1947 /Putnam/
Production twin JN.