buran, shuttle buran program, energia, space shuttle, launcher energia, launcher, USSR, mriya, polyus, poliyus, energya, maks, bor-4, bor-5, bor-6, energia-buran, soviet rocket, space shuttle, soviet launcher, Буран, Энергия, plans, schematic, soviet, russian shuttle, russian space shuttle, USSRburan, shuttle buran program, energia, space shuttle, launcher energia, launcher, USSR, mriya, polyus, poliyus, energya, maks, bor-4, bor-5, bor-6, energia-buran, soviet rocket, space shuttle, soviet launcher, Буран, Энергия, plans, schematic, soviet, russian shuttle, russian space shuttle, USSR


Share
                                                         

Auxiliary power system

During the return on earth Buran glide without engine, but in a plane the turbojets supply the energy for the on-board systems. For Buran they made an auxiliary power group (VSU) which is plug on the hydraulic system (elevons, rudder, brake system, actuators).

To guarantee the safety 3 auxiliary power groups are installed on each of 3 hydraulic canals, guaranteeing the well functioning of the actuators after 2 breakdowns.

Every VSU includes the engine, the pipe of evacuation, the arrival of fuel, the automatic system and the panel of maintenance on the ground.


Picture of a VSU, auxiliary engine РТВД-14 at OKB Archippus Cradle (now NPO "Saturn"):
buran, shuttle buran program, energia, space shuttle, launcher energia, launcher, USSR, mriya, polyus, poliyus, energya, maks, bor-4, bor-5, bor-6, energia-buran, soviet rocket, space shuttle, soviet launcher, Буран, Энергия, plans, schematic, soviet, russian shuttle, russian space shuttle, USSR buran, shuttle buran program, energia, space shuttle, launcher energia, launcher, USSR, mriya, polyus, poliyus, energya, maks, bor-4, bor-5, bor-6, energia-buran, soviet rocket, space shuttle, soviet launcher, Буран, Энергия, plans, schematic, soviet, russian shuttle, russian space shuttle, USSR

1-Gaz turbine, 2-Join of the exhaust, 3-Fireproof material, 4-Turbine, 5-Ruffle of fixation of the hydraulic system, 6-Oil tank, 7-Join of the fuel, 8-Join pressurized to the oil tank


VSU on the test bench:
buran, shuttle buran program, energia, space shuttle, launcher energia, launcher, USSR, mriya, polyus, poliyus, energya, maks, bor-4, bor-5, bor-6, energia-buran, soviet rocket, space shuttle, soviet launcher, Буран, Энергия, plans, schematic, soviet, russian shuttle, russian space shuttle, USSR buran, shuttle buran program, energia, space shuttle, launcher energia, launcher, USSR, mriya, polyus, poliyus, energya, maks, bor-4, bor-5, bor-6, energia-buran, soviet rocket, space shuttle, soviet launcher, Буран, Энергия, plans, schematic, soviet, russian shuttle, russian space shuttle, USSR

Different stages of the assembly and the tests of the VSU:
buran, shuttle buran program, energia, space shuttle, launcher energia, launcher, USSR, mriya, polyus, poliyus, energya, maks, bor-4, bor-5, bor-6, energia-buran, soviet rocket, space shuttle, soviet launcher, Буран, Энергия, plans, schematic, soviet, russian shuttle, russian space shuttle, USSR buran, shuttle buran program, energia, space shuttle, launcher energia, launcher, USSR, mriya, polyus, poliyus, energya, maks, bor-4, bor-5, bor-6, energia-buran, soviet rocket, space shuttle, soviet launcher, Буран, Энергия, plans, schematic, soviet, russian shuttle, russian space shuttle, USSR buran, shuttle buran program, energia, space shuttle, launcher energia, launcher, USSR, mriya, polyus, poliyus, energya, maks, bor-4, bor-5, bor-6, energia-buran, soviet rocket, space shuttle, soviet launcher, Буран, Энергия, plans, schematic, soviet, russian shuttle, russian space shuttle, USSR buran, shuttle buran program, energia, space shuttle, launcher energia, launcher, USSR, mriya, polyus, poliyus, energya, maks, bor-4, bor-5, bor-6, energia-buran, soviet rocket, space shuttle, soviet launcher, Буран, Энергия, plans, schematic, soviet, russian shuttle, russian space shuttle, USSR

On the following photos we see the shuttle 1.01 (it still named "Baïkal" before being renamed in "Buran") in the zone of pyrotechnic test from 15 till 25 April 1988. On the left photo the VSU is started up and we see the cloud of exhaust gases, on the right photo we see the escape of gases in normal regime.

buran, shuttle buran program, energia, space shuttle, launcher energia, launcher, USSR, mriya, polyus, poliyus, energya, maks, bor-4, bor-5, bor-6, energia-buran, soviet rocket, space shuttle, soviet launcher, Буран, Энергия, plans, schematic, soviet, russian shuttle, russian space shuttle, USSR buran, shuttle buran program, energia, space shuttle, launcher energia, launcher, USSR, mriya, polyus, poliyus, energya, maks, bor-4, bor-5, bor-6, energia-buran, soviet rocket, space shuttle, soviet launcher, Буран, Энергия, plans, schematic, soviet, russian shuttle, russian space shuttle, USSR

Technical details

Characteristic Value
Power, kW 17-105
Revolution frequency, tr/min
Turbine 55 000
Axle shaft 4 500
Fuel Hydrazine
Temperature 5-50
Functioning time, min 75
Dry weight, kg 235