GYRODYNE XRON - YRON
General
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Rotor disc diameter 20 ft 0 in.
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Length, rotors fore and aft 20 ft 0 in.
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Width, maximum, rotors fore and aft 5 ft 10.1 in.
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Landing gear skid length 7 ft 7.5 in.
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Landing gear skid tread, center to center 5 ft 7.3 in
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Height, over-all static 8 ft 6 in.
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Ground clearance, static 5 ft 8 in.
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Minimum clearance under lower rotor 3 ft 5 in.
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Weight, empty 578 lbs
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Weight, maximum gross 885 lbs
Rotors (2 semi-rigid)
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Blades per rotor 2
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Blade chord, root (theoretical) 9.0 in.
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Blade chord, tip 4.5 in.
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Geometric solidity .072
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Effective solidity .060
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Blade twist -12 deg
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Blade airfoil section, root (theoretical) 0021
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Blade airfoil section, tip (theoretical) 0012
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Rotor speed 455 rpm
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Tip speed 476 fps
Engine (1)
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Make Gyrodyne - Porsche
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Model YO-95-8
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Type Four-cylinder, four-stroke/cycle, two opposed pairs of cylinders, air cooled
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Bore 3.25 inches
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Stroke 2.91 inches
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Displacement 96.5 cubic inches
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Compression ratio 8.5 to 1
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Fuel Spec MIL-F-5572
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Grade 91/96
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Oil Spec MIL-L9000 Summer: SAE 30-9250 Winter: SAE 20-9110