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Книга Pfalz D.III - Windsock Datafile № 107

Книга Книга Pfalz D.III - Windsock Datafile № 107

Название: Pfalz D.III - Windsock Datafile № 107
Автор: P.M. Grosz
Страниц: 35
Формат: PDF
Размер: 50 МВ
Качество: Отличное
Язык: Английский
Год издания: 2004
The Pfalz D.III was a fighter aircraft used by the Luftstreitkräfte (Imperial German Air Service) during the First World War. The D.III was the first major original design from Pfalz Flugzeugwerke. Though generally considered inferior to contemporary Albatros and Fokker fighters, the D.III was widely used by the Jagdstaffeln from late 1917 to mid-1918. It continued to serve as a training aircraft until the end of the war.
Prior to World War I, Pfalz Flugzeugwerke produced Morane-Saulnier monoplane designs under license. These aircraft entered military service as the Pfalz A- and E-series. In September 1916, Pfalz began producing the first of 20 Roland D.I and 200 Roland D.II fighters under license.
In November 1916, Pfalz hired Rudolph Gehringer from Flugzeugbau Friedrichshafen GmbH. As Pfalz’s new chief engineer, Gehringer immediately commenced work on an original fighter design.
The resulting D.III emerged in April 1917. Like the Rolands, the D.III used a plywood monocoque fuselage. Two layers of thin plywood strips were placed over a mold to form one half of a fuselage shell. The fuselage halves were then glued together, covered with a layer of fabric, and doped.
This Wickelrumpf method gave the fuselage great strength, light weight, and smooth contours compared to conventional construction techniques. However, it also proved to be more labor-intensive and expensive. Furthermore, fuselages of the Wickelrumpf type proved to be liable to twisting or warping in service, affecting performance as well as causing control problems. This has been attributed to moisture absorption in damp front-line conditions or to the use of insufficiently seasoned wood.
The wings were of conventional construction, with a flush Teves und Braun radiator offset to the right side of the upper wing. The ailerons were wooden, rather than the more usual steel tube construction. The horizontal stabilizer had an inverted airfoil section, which facilitated dive recovery and permitted the use of an unbalanced elevator.
Idflieg found the prototype promising. It directed Pfalz to halt production of the Roland D.III and to complete the balance of the contract, 70 aircraft, to the new design. After a Typenprüfung (type test) at Adlershof in May, the Idflieg ordered various modifications, including an enlarged rudder and horn-balanced ailerons.In June 1917, Pfalz received a second order for 300 aircraft

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