Junkers J 1

O.Thetford, P.Gray German Aircraft of the First World War (Putnam)

O.Thetford, P.Gray German Aircraft of the First World War (Putnam)

Junkers J 1
First product of the Junkers factory was the J 1, also designated E I. It was an angular, all-metal monoplane of astoundingly advanced appearance. Its first test flight was made by Lt. v. Mallinckrodt at Doberitz on 12th December 1915. The thin sheet iron with which the aircraft was covered gave rise to the "Tin Donkey'" appellation which was applied to this an subsequent Junkers types, although later machines were covered with dural sheet. Only the single J 1 was built. Engine, 120 h.p. Mercedes D II. Span, 12.95 m. (42 ft. 5 5/8 in.). Length, 7.43 m. (24 ft. 4 5/8 in.). Height, 3.13 m. (10 ft. 3 1/4 in.). Area, 24.64 sq.m. (266 sq.ft.). Weights: Empty, 900 kg. (1,980 lb.). Loaded, 1,010 kg. (2,222 lb.). Speed, 160 km.hr. (100 m.p.h.).

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	O.Thetford, P.Gray - German Aircraft of the First World War /Putnam/
	The monoplane was far from being a novelty, when the Junkers J.I was rolled out in early December 1915 and prepared for its inital test hop on the 12th. What was different about this one, however, went beyond the smooth, fully cantilevered exterior and into the all-metal structure and use of the Junkers-devised, thick sectioned, high lift wing. Built purely as a research machine, the two seat 120hp Mercedes D III powered Junkers J.I could accommodate a flight test observer. Military interest in the J.I was quickened by its warlike potential and it was trialled against a Rumpler C I, a machine that was considered the best in its class. Compared with the C I, the Junkers machine was 7mph faster on the level, at 106mph and even faster in a shallow dive. However, being built of steel, the J.I was heavy and, hence, markedly inferior to the Rumpler biplane in terms of climbing performance, earning the nicknames 'Tin Donkey' and 'Flying Urinal'. As with all of Junkers' early machines dealt with here, the actual design work on the J.I was led by Otto Reuter. It must be noted that this J.I was the company's designation, whereas the armoured sesquiplane J I was a later machine that carried the firm's designation J.4.
	A.Weyl - Fokker: The Creative Years /Putnam/
	The Junkers J.1, a cantilever monoplane of 1915.