1/5.3 Horten HO-229 Flying Wing

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Project Originations
This model was a cumulative effort between ourselves and a friend. It was started in September 2012 and had its first flight 4 montsh later. The model is a 150% enlarged version of the WingsontheWeb.com 82" wingspan Ho-229. This models outline and airfoil is based of the Arthur Bentley Drawings, so the model is accurate for scale competition.
Our version includes and all composite Vacuum infused Composite center wing section that encloses the landing gear system, power plants and radio receiver equipment. This composite center section adds to the cost of the model, but at 5 1/2lbs of weight with all of the primary internal structure's pre-installed, it saves 10+ lbs of weight over a conventionally built and fiberglassed wood center section. The strength of this center wing section has to be seen to be believed as well! The outer wing panels consist of conventional balsa/ply construction techniques.
The prototype has flown successfully on a pair of 90mm JetFan 90v2 EDF units with HET 700-68-1200kv motors on 12s 5000 lipoly batteries per fan unit with an installed thrust of 24lbs combined. The model is well suited to twin turbine installations as well for advanced modelers (turbine installation, its components and fuel tanks will have to be designed/sourced by the builder, we are able to assit with this to some degree). Flight controls consist of Conventional elevons, flaps (two segments per wing pane) drag rudders (upper and lower wing surfaces) and nose wheel steering. A minimum of a 9 channel radio system is required for full functionality of the flight controls.

Model Specifications:
Wingspan- 123"
Wing Area-
Length- 54"
Weight- 30+ lbs
Power system- 90-120mm EDF or 12-16lb thrust turbines X 2
Servo's- 11 (two- 150oz/in+ for elevons, four- 120oz/in+ for flaps, four- HS-81Mg's or equiv. (Drag rudders and nose gear doors)and one Jr8711 or equiv. (nose gear steering)
Retracts: Main gear - Springair series 700 or equiv. and 3/8"min. diameter oleo struts. 4" tire size
Nose Gear- Robart 645RS and a modified Robart 686 trailing link strut (These units available ready for installation from us), 4" tire size

Basic Short Kit includes:
Composite center section with Primary wing spar with wing tube sockets and main landing gear structures installed.
Full size plans with templates and construction jigs
Vacuum formed clear canopy
Carbon reinforced molded upper landing gear strut doors
Molded canopy frame cutting guide template
1 1/2" aluminum wing tube and socket material
Hand cut and sanded Nose landing gear structure parts (not installed)
Custom built plywood shipping crate

Price: $1500 + actual shipping charges

Short Kit plus:
Includes all of the Basic short kit components as well as a full set of Laser cut wing ribs, drag rudder components, wing tube rib doublers, construction jigs and optional elevon and flap hinging components.
Price: $1800 + actual shipping charges

Full Kit
Includes all of the components includes in the short kit plus as well as all Stick and Sheet balsa necessary for completion.
Price: $2200 + actual shipping charges

Robart 645RS nose retract and modified 686 nose gear strut: $300, free shipping
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Kit component Photos:

Molded Center section as you recieve it:

Primary Internal structure before the mold halves are closed:

Other Photos:

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Flying videos: more to come as the prototype gets more time on it!

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Use of graphics or photos without written permission from TWM is strictly prohibited

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