| 摘要 |
FIELD: engines and pumps. ^ SUBSTANCE: bench to test electrojet engine on iodine, comprising vacuum chamber, movable bracket with electrojet engine installed on it and system of braking and condensation of plasma jet outflowing from engine, including target and cryopanel, which are additionally equipped with heaters and are tightly connected to each other, besides, cryopanel is equipped with hatch, having remote drive, hatch has elastic bag tightly fixed to its inner surface and joined to balloon, containing inertial gas, for instance, argon, besides, tight compartment formed by cryopanel, target and hatch, via detachable joint, is tightly connected to reservoir for recycling of iodine, equipped with cooling system and heater. Method to test electrojet engine operating on iodine as working substance on bench, consisting in the fact that outflowing working substance is braked on target and deposited on cryopanel, at the same time cryopanel and target are cooled down to temperature (minus 60Çminus 70)C, besides, after engine disconnection, hatch is closed, pressure in vacuum chamber is increased by termination of cryoagent supply into cryopanel and target up to (10-3Ç10-2) mm of mercury column, target and cryopanel are heated up to temperature of (100Ç110)C, besides, reservoir for iodine recycling is cooled down to temperature that does not exceed minus 50C, inertial gas is supplied, heated up to temperature of (100Ç110)C, into elastic bag, pause is maintained, bench pumping with vacuum system is stopped, vacuum chamber is opened, detachable joint of iodine recycling reservoir is disconnected, collected iodine is used repeatedly with the help of its heating. ^ EFFECT: invention makes it possible to reduce cost of electrojet engine run-in. ^ 2 cl, 1 dwg |
