Artistic illustration Spiral © Konstantinos Panitsidis
Technical specifications 
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The orbital and hypersonic aircraft Spiral was developed by OKB-155 Mikoyan in 1965, under the leadership of the Chief Designer of the OKB Gleb Evgenievich Lozino-Lozinsky. Aerospace system Spiral is a two-stage space complex, which consists of a hypersonic accelerator aircraft and a manned orbital aircraft.
And also modifications of the manned orbital aircraft were developed as: Daytime photographic reconnaissance aerospaceplane, reconnaissance version, attack orbital aerospaceplane, interceptor.
Technical Specifications: Crew 1 Dimensions: Length 8,00 m Wing span 7,4 m Height 3,3 m Weight: Maximum take-off 10.300 kg Empty 4.630 kg Payload 4.908 kg Maximum orbital load H=200 km i=51o 1.300 kg Power Plant: Atmospheric engine One turbojet RD-36-35K Thrust 2.350 kgf Fuel Kerosene Orbital Engine One Liguid-propellant rocket Thrust 1 х 1.500 kgf and 2 х 40 kgf Fuel Nitrogen tetrooxide + Unsymmetrical dimethylhydrazine Performance: Orbit altitude 130-150 km.
THREE-VIEW DRAWING
TECHNICAL SPECIFICATIONS
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DESIGNER
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OKB-155 MiG
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COUNTRY
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Russia
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TYPE
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Orbital aircraft
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CREW
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2
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POWER-PLANT
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Four turbojet engine, RD-39-300
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Thrust, kgf
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-
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DIMENSIONS
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Length, m
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38,00
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Height, m
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-
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Wing span, m
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16,5
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Wing area, m2
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240,00
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WEIGHT
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Maximum take-off, kg
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115.000
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Normal take-off, kg
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-
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Empty aircraft, kg
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-
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Internal fuel, kg
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-
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PERFORMANCE
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Maximum speed, km/h
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7.350
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Max speed in low height, km/h
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-
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Range, km
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3.000
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Service ceiling, m
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28.000 - 30.000
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Rate of climb, m/min
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-
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ARMAMENT
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-
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