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The Jacobs Hols der Teufel ((英語:Devil take it)) was a single seat trainer glider produced in complete and plan forms in Germany from 1928. It was built and used world wide. ==Design and development== The first glider to be named the Hols der Teufel was the influential Djävaler Anamma, designed by Alexander Lippisch in 1923. The name was associated with the cursing of two Swedish students in the Wasserkuppe workshops whose favourite phrase it was. It translates into German as Hols der Teufel. Its key structural feature was an A-frame which carried wire braced wings and linked to a flat girder rear fuselage. It later evolved through the Schneider Grunau 9 into the very popular Zögling, which avoided the controversial "skullsplitter" forward member of the A-frame with a vertical strut behind the pilot, and was related to the secondary RRG Prüfling glider that replaced wire bracing with rigid lift struts.〔 The Hols der Teufel of 1928, designed by Lippisch and Hans Jacobs, possibly with the assistance of Alexander Schleicher had the Zögling girder frame and the strut braced wings, making it very different from its ancestral namesake.〔 The Hols der Teufel was built (and named) by Alexander Schleicher in his factory in the valley below the Wasserkuppe. Detailed plans of it for amateur use were included in a book on glider building published by Jacobs in 1932 and led to its widespread construction. The complete Schleicher version differed somewhat from the plans in several details, for example more rounded wing tips and span, different girder frame cross bracing and a wire, rather than strut braced tailplane.〔 The Jacobs plans show the Hols der Teufel had a simple, constant chord wing much like that of the Zögling though of greater span, built around two spars and fabric covered except at the leading edge which was plywood skinned. Its broad, constant chord ailerons were longer than those of the Zögling and its round cornered, tapered tips were less angular. As before, the wing was supported by the forward members of its girder fuselage; a vertical strut near the leading edge and an inverted V-strut behind. As the wing was strut rather than wire braced there was no longer a need to extend these struts above the wing into a pylon. The two faired, parallel lift struts on each side ran from the lower forward fuselage to the wing at about mid-span.〔 Like some Zöglings, the Hols der Teufel had a light nacelle, ending under the wing at a forward leaning vertical knife edge around the aft central wing strut, enclosing both the pilot's seat and the other supporting struts. Aft, the cross braced girder had a horizontal upper beam onto which the tailplane was mounted, strut braced from below. Its leading edge was straight and strongly swept; the cropped, parallel chord elevators had a central cut out for rudder movement. The fin was under the tailplane, formed by fabric covering between the last two vertical fuselage fames. Its upright, near rectangular rudder was hinged on the extended, final vertical frame member. The Hols der Teufel landed on a rubber sprung skid which ran from the nose to a little beyond the aft lift struts.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Jacobs Hols der Teufel」の詳細全文を読む スポンサード リンク
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