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The orbital space-plane OS ("Oрu1073 иu1090 аu1083 ьu1085 ыu1081 Cаu1084 оu1083 еu1090 " in Russian means "Orbital space-plane") has a length of 8m and a width of 4m, it has a geometry of lift body, which is a triangular shape very flattened. The nasal part is inclined of 60° and the radius of curvature is 1.5 m. Moreover the nose is equipped with a heat shield which resist of more 1400°C (during the re-entry in the atmosphere).
The landing was carried out by 4 skis located in the cold part, in the top area of the heat shield.
The engine part made up of:
The cockpit, equipped by solid propellant motors, could eject to save the pilot in the event of damage in any phase of the flight. The capsule was equipped with an engine to direct it during the phase of re-entry in the atmosphere, with a beacon of rescue and batteries. The descent is done thanks to a parachute at the speed of 8 m/s, it is the deformation of the cabin which make the absorption of the landing shock.
To be multipurpose the orbital fighters had a compartment of 2 m³which enabled them to embark various types of apparatuses such as a camera, a spreadable radio antenna, a space-ground missile, a space-space missile.
The day scout was intended for the fast detailed terrestrial and marine recognition target. The camera installed on the aircraft makes it possible to take details of 1.2 m at an altitude of 130 km more or less 5 km.
It is supposed that the pilot seeks the objective manually by scanning the ground surface with a special sight, laid out in the cabin, having a zoom of 3x to 50x.
The trigger of the camera is done by the pilot, the photographed zone is a square of 20 km for a limited altitude of 100 km. In a revolution the pilot must be able to shoot 3 or 4 objectives.
The day scout is equipped with KV and Уu1050 Вtransmitters to transmit information to the ground.
The day scout made of a welded frame, interior reinforcements, wings reinforcements, GRD, fuel tanks and blocks of equipment, of camera, TRD and air-flue, radio transmission system, cabin, mechanical actuators of the wings, vertical stabilizer, room of the main landing gear, air-brake, removable panel of the machines, lid of the camera and apparatuses of astronavigation.
Below the cyclo-gram is a standard flight of the day scout, dated of December 1965, we can see that the apparatus was not simply intended to took photograph but also for the orbital combat, in particular by the execution of anti-machine operations:
The distinctive feature of the radar scout was the presence of a spreadable antenna of 12 x 1.5 m. The resolution supposed was to be from 20 to 30 m what is enough for the recognition of maritime embarked connections and also large terrestrial objects.
This plane was intended for the destruction of mobile marine objectives by launching a nuclear missile space-ground Бu1063 . The precises coordinates of the objective was defined by the embarked radar and the navigation means of the space-plane. The piloting of the missile by radio made it possible to correct the trajectory errors in the first moments of flight. The missile had a mass of 1.7 t and its ray of destruction was of more or less 90 km, which is enough to destroy an aircraft carriers which sails at 32 knots.
The last alternative of combat of the orbital space-plane was a space interceptor (2 alternatives were studied):