Building the Dornier Do 31 E3, S/VTOL from Planet models
by John Horst © Modeler Site
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This programme goes back to the year1959. In 1962, the Federal Ministry of Defence awarded Dornier a design contract for the Do 31 V/STOL transport aircraft. Under this experimental programme, the production programme covered a small and a large hovering rig for for studying design principles, an airframe for structural testing, and a systems test stand for hydraulic and electric systems. The two test aircraft Do 31 E1 (without lift engines) and E3 were successfully tested between 1967 and 1970.
The Do 31 was equipped with two Rolls Royce Pegasus 5-2 lift/thrust engines rated at 7000kg of thrust each which provided power for cruising flight as well as lift during take-off and landing via vectored nozzles. To support the cruise engines in hover flight, a total of eight Rolls Royce RB-162-4D, rated at 2000kg of thrust each, were installed in nacelles at the wing ends. By tilting the cruise engine nozzles, the Do 31 was accelerated to the speed of appr. 250 km/h required for aerodynamic horizontal flight, and the eight lift-producing engines were stopped again after 20 seconds.
The Do 31 E3, which established several FAI world records during its ferry flight to the 1969 Paris Air Show, was the first and so-far only vertical take-off transport jet built in the world.
Assembling the Planet kit
I have started with the elevator.
To fix the elevator, I’ve used a 0,9mm wire.
The same was made for the wings and nacelles.
Now to the nacelles for the cruise engines, there’s a mistake in the Planet vectored nozzles, 2 lamellas are missing. I was too lazy to add the missing 2, sorry. The vector nozzles are rotary on 120 degree
The air intakes were painted Alclad Chrome, the nacelles Alclad Airframe Aluminium and some weathering with Tamiya Weathering Master.
The nacelles for the lift engines were painted Alclad Dural Aluminium (front and end),
Alclad Airframe Aluminium and Tamiya Gun Metal.
The fuselage was painted Tamiya Flat Aluminium.
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