fruition because none had the potential for transonic speeds. This aircraft, bearing the RLM airframe number 8-183, was intended to use, as with a growing number of other advanced German late-war jet aircraft proposals, the advanced Heinkel HeS 011 turbojet; although the first prototypes were to be powered by the Junkers Jumo 004B. Early studies also included an optional 1,000 kgf (10 kN) thrust rocket engine for takeoff and combat boost, much as the special "003R" version of the BMW 003 jet engine was meant to use, with fuel and oxidiser for up to 200 seconds of burn time stored in drop tanks under the wings. The wings were swept back at 40° and were mounted in the mid-fuselage position. The wings appear to be mounted very far forward compared with most designs, a side-effect of attempting to keep the centre of pressure (CoP) of the wing as a whole as close to the middle of the fuselage as possible. Reflecting the dilemma of a shortage of strategic materials, the first option of using aluminum in the construction of the main spar consisting of two tapered I-beams attached together on the top and bottom with shear webs of thin steel sheeting, led to a reappraisal. Multhopp chose to use wood instead of metal throughout the wing structure, with wood structure ribs attached to the front and back of the I-beams to give the wing its overall shape, and then covered with plywood. The box-like structure contained six fuel cells, giving the aircraft a total fuel load of 1,565 L (413 US gal). The original design used a T-tail, with a notably long vertical stabilizer and a seemingly undersized horizontal stabilizer. The vertical stabilizer was swept back at 60°, and the horizontal stabilizer was swept back and slightly dihedralled. The horizontal stabilizer also featured two large trim tabs, the main pitching force actually being provided by what would have appeared to be "ailerons" on most other turbojet-powered fighter airframes of the period. The Ta 183 wing's outermost trailing-edge control surfaces on its wing panels, were well behind the center of gravity, placing their trailing edges' tips virtually even, horizontally, with the intended HeS 011 jet engine's exhaust orifice, and thus could provide both pitch and roll control through functioning as elevon control surfaces, as those on the wing panels of Messerschmittt's Me 163 tailplane-less Komet rocket fighter already did. Many problems