The Radiodont Dynamics, contemporarily Autumn Engine and Aeroplane Company X-315 'Collei', object 12—, is a fighter project built to be used as a long-range bomber escort, mainstay and emergency fighter. First flown in late 1934. Here shown is the prototype build flying, slightly banking left.

Before flying, please flick the lever at your left side. There are two levers, you can flick them both to run the engine.

I. DEVELOPMENT

Several air forces are planning to replace old biplane fighters with new monoplane fighters such as the Dewoitine D.520 and the Boeing Model 281.
The Radiodont bureau, then known as the Autumn bureau designed an aircraft that should reach 440 km/h at 3,000 meters and have a range of 800 kilometers for escorting bombers.
The resulting design, nicknamed Collei (Genshin character), officially the Amplectoblua(Cambrian radiodont, animal) is a single-seat monoplane fighte powered by a R-1535 engine driving three-bladed Curtiss Electric/Hamilton propeller.

The prototype was first flown December 27, 1934, but it did not reach 3,000 meters above sea level (it was intentional by the pilot), the prototype Collei did reached 391 km/h TAS near sea level, and around 440 km/h TAS at 2,500 meters.

The Amplectoblua name was dropped following production contracts.

II. VARIANTS

Here shown and built is the prototype. Marked X-315 for research and acceptance tests, it has been used and demonstrated by multiple air forces and the Autumn bureau to demonstrate the capabilities.

Production variants would have a longer cowling and 1,000 hp Twin Cyclone engine with a Rhinemaiden (then known as the Durin Aircraft Company, Oslo Air Workshop) GS-1-1 supercharger.

III. SPECIFICATIONS

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Length:
Width:
Height:
Empty weight:
Gross weight:
Wing area:
Wing loading:
Fuel capacity:
Powerplant: R-1535 driving three-bladed constant speed propellers

Maximum speed: 391 km/h TAS near sea level
Cruise speed:
Stall speed:
Climb rate:
Range:
Service ceiling: ~9,000 meters. One flight made 11,260 meters.

Armament: 4x 0.30 mm, 2x 0.50 mm

IV. COCKPIT

To start the engines, flick the switches at your left side, at the right side of the throttle lever.

Signature

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