H.XVIIIA The A model of the H.XVIII was a long, smooth
blended wing body. Its six
turbojet engines were buried deep in the wing and the exhausts centered on the trailing end. Resembling the
Horten Ho 229 flying wing fighter there were many odd features that distinguished this aircraft; the jettisonable
landing gear and the wing made of wood and carbon based glue, are but two. The aircraft was first proposed for the
Langstreckenbomber competition initiated in late 1944 and was personally reviewed by
Hermann Göring: after review, the Horten brothers were forced to share design and construction of the aircraft with
Junkers and
Messerschmitt engineers, who wanted to add a single
rudder fin as well as suggesting underwing
pods to house the engines and landing gear.
H.XVIIIB The B model of the H.XVIIIB was generally the same as the A model, except the four (down from six) engines and four-wheel retractable landing gear were now housed in underwing pods, and the three-man crew housed under a bubble canopy. The aircraft was to be built in huge concrete hangars and operate off long runways with construction due to start in autumn 1945, but the end of the war came with no progress made. Defensive armament was considered unnecessary due to the expected high performance.
H.XVIIIC/B-2 The C model of the H.XVIII was based on the airframe of the H.XVIIIA with a huge tail. It had an
MG 151 turret set in the middle rear of the wing and with six
BMW 003 turbojets slung under the wings; this was designed by Messerschmitt and Junkers engineers. It is uncertain if this overall design was directly developed by the Horten brothers or their manufacturer, as there is little surviving evidence of this proposed version. It was eventually rejected by the Horten brothers, as it was not a major improvement over the Ho XVIIIA. ==Specifications (H.XVIIIA)==