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BOR-5

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BOR-5 after flight BOR-5 in handling rig after flight Credit: from Semenov, et. al., Buran, 1995.

Status: Operational 1984. First Launch: 1984-07-05. Last Launch: 1988-06-21. Number: 5 . Gross mass: 1,400 kg (3,000 lb).

The BOR-5 was boosted on sub-orbital trajectories to altitudes of 100 km and velocities of from 4,000 to 7,300 m/s. These proved the handling characteristics, aerodynamic moment, and control effectiveness from Mach 1.5 to Mach 17.5, at Reynolds numbers of from 1.05 to 2.1 and angles of attack from 15 to 40 degrees. They also allowed study of flow separation at the fuselage surface and thermodynamic characteristics of the design. Final results indicated a lift-to-drag ratio of 1.3 at hypersonic speed, 5.0 at Mach 2, and 5.6 at subsonic speed. Typical trajectory: ascent to 120 km; pitch down to drive model in atmosphere at 45 degree at Mach 18.5. None were reflown but at least 4 were recovered.

Photo Gallery

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BOR-5 Credit: Manufacturer Image

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• BOR-5 sn 501 subscale 1:8 Buran reentry test - . Mass: 1,450 kg (3,190 lb). Nation: Russia. Agency: UNKS. Program: Buran. Spacecraft Bus: Buran. Spacecraft: BOR-5. Apogee: 210 km (130 mi). Range: 2,000 km (1,200 mi). Suborbital test of 1/8 scale model of Buran. Typical trajectory: ascent to 210 km; pitch down to drive model in atmosphere at 45 degree at Mach 18.5. None were reflown but at least 4 were recovered..

• BOR-5 sn 502 subscale 1:8 Buran reentry test - . Mass: 1,450 kg (3,190 lb). Nation: Russia. Agency: UNKS. Program: Buran. Spacecraft Bus: Buran. Spacecraft: BOR-5. Apogee: 210 km (130 mi). Range: 2,000 km (1,200 mi). Suborbital test of 1/8 scale model of Buran. Typical trajectory: ascent to 210 km; pitch down to drive model in atmosphere at 45 degree at Mach 18.5. None were reflown but at least 4 were recovered..

• BOR-5 sn 503 subscale 1:8 Buran reentry test - . Mass: 1,450 kg (3,190 lb). Nation: Russia. Agency: UNKS. Program: Buran. Spacecraft Bus: Buran. Spacecraft: BOR-5. Apogee: 210 km (130 mi). Range: 2,000 km (1,200 mi). Suborbital test of 1/8 scale model of Buran. Typical trajectory: ascent to 210 km; pitch down to drive model in atmosphere at 45 degree at Mach 18.5. None were reflown but at least 4 were recovered..

• BOR-5 sn 504 subscale 1:8 Buran reentry test - . Mass: 1,450 kg (3,190 lb). Nation: Russia. Agency: UNKS. Program: Buran. Spacecraft Bus: Buran. Spacecraft: BOR-5. Apogee: 210 km (130 mi). Range: 2,000 km (1,200 mi). Suborbital test of 1/8 scale model of Buran. Typical trajectory: ascent to 210 km; pitch down to drive model in atmosphere at 45 degree at Mach 18.5. None were reflown but at least 4 were recovered..

• BOR-5 sn 505 subscale 1:8 Buran reentry test - . Mass: 1,450 kg (3,190 lb). Nation: Russia. Agency: UNKS. Program: Buran. Spacecraft Bus: Buran. Spacecraft: BOR-5. Apogee: 210 km (130 mi). Range: 2,000 km (1,200 mi). Suborbital test of 1/8 scale model of Buran. Typical trajectory: ascent to 210 km; pitch down to drive model in atmosphere at 45 degree at Mach 18.5. None were reflown but at least 4 were recovered..