Bauplan Horten H.XVIII

The impressive design of the Horten H.XVIII dates back to 1945 and was to be powered by six Junkers Jumo 004  jet turbines. Raimund Sonst modelled the H.XVIII on a scale of 1:14 and drew a construction plan. With a wingspan of 3.07 metres, his Horten is equipped with six 50 mm electric ducted fans. The design of the model was calculated using Multhopp's wing line theory, extended by the arrow wing theory of Prof Boris Laschka. The wing design of the H.XVIII produces a model that flies well.

The model consists of divisible wings, with the centre section accommodating the six ducted fans. The wings are built in a slipway, which is part of the construction drawing, to ensure that the angles of incidence are precisely maintained.

The construction plan print, printed on one side on white paper from the publisher, comprises five sheets 900×1,800 - 2,500 mm. The delivery includes building instructions. The construction description includes a download package with 240 construction stage illustrations.

Technical specifications

• Scale: 1:14
• Wingspan: 3,076 mm
• Flying weight: 4,200 g
• Airfoil: Horten
• Wing area:  97.33 dm²
• Wing load:  43.15 g/dm²
• Design CA: 0.4
• Impeller: 6× 50 mm ducted fans 
• Battery: 2× 4s-3,400 mAh LiPo
• Controller: 6× YEP or Sunrise with 60 A
• Rudder range:  +- 25 mm
• RC-functions: Elevator, Aileron and Throttle